aeronautical climat logical o summaries contents
TRANSCRIPT
2006
OFFICE OF THEADDITIONAL DIRECTOR GENERAL OF METEOROLOGY
(RESEARCH)INDIA METEOROLOGICAL DEPARTMENT
2006
INDIAMETEOROGLOGICAL
DEPARTMENT
C O N T E N T S
PREFACE
INTRODUCTION
MODEL A
MODEL B
MODEL C
MODEL D
MODEL E
TABLE VI
FIGURES
DESIGNED & AUTHOREDAT THE
METEOROLOGICAL OFFICE PRESSPUNE
AERONAUTICAL CLIMAT LOGICALSUMMARIES
(INDIRA GANDHI INTERNATIONAL)
O
WMO MODELS - A, B, C, D, E & Table VIBASED ON DATA FOR THE PERIOD 1998 - 2002
NEW DELHI
AIRPORT
P R E F A C E
Meteorological services for Aviation are very essential for making air
navigation safe, cost effective and efficient. Aircrafts mostly fly in the lower
atmosphere where most of the weather systems develop and decay during their life
cycle. The relevant information of meteorological parameters - particularly
atmospheric pressure, weather, wind, visibility & runway visual range (RVR), cloud
height and temperature are needed for the operation of an aircraft from take off to
the landing phases. Apart from current weather, climatology of an airport is also very
important for determination of runway orientation, flight planning and to understand
weather factors affecting a particular airport at a particular time.
It is therefore very essential that climatology of an airport is available as a
ready reckoner to understand frequencies of various weather elements in different
temporal scales which affect aircraft operations.
Earlier, Aeronautical Climatological Summaries in respect of four International
Airports were first published by India Meteorological Department in 1975. In view of
the explosive growth in aviation industry and also in view of rapid advancement in
information and computing technology, it has become necessary to update these
summaries and also to extend them to other airports. With this in view Aeronautical
Climatological Summaries for twenty International and National Airports using the
data for the period 1998-2002 are presented in the pattern of WMO models A, B, C,
D, E and Table VI in accordance with the procedures laid down in Technical
Regulations and as per ICAO Annex. 3.
These models are described below:
MODEL A Monthly mean number of occurrences of runway visual range/ visibility and / or height of the base of the lowest cloud layer (in metres), covering more than 4/8th of the sky below specified values at the specified time.
MODEL B Monthly mean number of visibility below specified values (in metres) at the specified time.
P R
E F
A C
E
MODEL C Monthly mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified time.
MODEL D Monthly mean number of occurrences of concurrent wind direction (in 30° sectors) and wind speed (in knots) within specified ranges.
MODEL E Monthly mean frequency of occurrences of screen temperature (°C) in specified ranges of 5 degrees of the specified time.
TABLE VI Monthly mean atmospheric pressure (in hPa) at the reference level / mean sea level (for low level stations) at the standard times for surface synoptic observations.
In addition to the above models and table, useful Climatological information in
pictorial form based on long period data is also provided at the end of each model.
These climatological summaries have been prepared by the Surface
Statistics and Planning section, Office of the Additional Director General of
Meteorology (Research), Pune under the guidance of Shri Thakur Prasad, Deputy
Director General of Meteorology (Climatology) and Dr. T. P. Singh, Meteorologist.
Valuable contributions were made by Smt. S. V. Mhasawade, A.M. I, Shri A.
B. Bhole, S.A., Shri P. S. Balki, S. A. and Smt S. H. Joshi, S.O. towards the
preparation of these Summaries. The required software for quality control of data,
preparation of normal of meteorological parameters and tables in these models was
developed by Shri A. K. Jaswal, Meteorologist at the National Data Centre, Pune.
The designing and the printing of these manuscripts were done by Shri Abraham
Philipose, A.M. II at the DTP and printing unit. My appreciation goes to all of them.
I am hopeful that this updated publication will serve as a useful source of
adequate and authentic information to aviation services.
Pune – 5 September 2006
Dr. (Mrs.) N. Jayanthi DDGM (WF)
LACD of ADGM(R)
P R
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E
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I n t r o d u c t i o n
Delhi is the capital city of India since old times. Delhi is one of the most historic capitals in the world and two of its monuments- Qutub Minar and Humayun’s Tomb are known as world heritage sites. Delhi is today, one of the fastest growing cities of India which is having a population of around 13.8 million. It is also capital of the state of Delhi. It is widely spread over 1483 square kilometers and is surrounded by two states- Uttar Pradesh and Haryana. It is the gateway to India, being well linked by road, rail and air to important cities of the country. It serves as a perfect introduction to the cultural wealth, the complexities and dynamism of India. Delhi, besides being the seat of Central Government, has an economy supported by tourism, commerce, and a growing information technology industry. It is also epicenter of the nation’s politics, economy and culture. It has a number of leading educational institutes for higher learning, training, research and development in science, medicine, engineering and technology. With the development of architectural infrastructure facilities, Delhi plays host to a number of national and international events including sports related events, conferences and seminars. Delhi is an international hub of export and import of goods in the country.
Indira Gandhi International Airport, New Delhi (Lat. 28º34’ N and Long. 77º07’ E) is situated at Palam in the south-western part of the city at an altitude of 233 metres. The airport is one of India’s main domestic and international gateways. It is connected with major cities of India and other countries. It has two terminals. Terminal- 2 at new building of the airport is used for international flights while Terminal-1 (older airport Palam) is exclusively used for domestic operations. It has two runways-main runway 10-28 is about 4 km long and an auxiliary runway 09-27 is about 3 km long. Runway 10-28 is equipped with CAT III-B instrument landing system which is one of the few runways in Asia. It is the first Indian airport which is operating two runways simultaneously. The airport is the home of several Indian airlines including Air Sahara, Spice Jet, Alliance Air and IndiGo Airlines. Some airlines use this airport as their second hub after Mumbai’s CSI Airport. It is used by various national and international airlines. The airport handles an average of 490 daily scheduled commercial movements including 130 international flights. The airport operates round the clock and currently handles up to 22 landing and takeoff per hour. On 30th March, 2006, the airport reached a record number of 551 of arrivals and departures. The climate of Delhi is of continental nature. The city has an extreme type of weather, very hot in summer season and very cold in winter season. Sometimes it is affected by western disturbances, mist, fog, thunderstorms, dust storms and squalls. Meteorological Office at the airport Delhi started functioning since January 1952 and is equipped with modern instruments to record and report meteorological parameters. During January and February weather in Delhi is cold. The cold wave from the Himalayan region makes winter very chilly. Sometimes western disturbances occur and give significant amount of rain in this period. Mist and fog are generally experienced in
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the morning and late night hours. The mean maximum and minimum temperatures are around 23ºC and 7ºC respectively. In the month of March the weather is pleasant in Delhi where maximum and minimum temperatures are around 30ºC and 14ºC respectively. The summer season in Delhi practically starts from April and extends up to June. The weather is hot and dry and on few occasion heat wave prevails in this season. The mean maximum and minimum temperatures during this period are around 39ºC and 24ºC respectively. The monsoon season commences from last week of June and extends up to September. Average rainfall in the monsoon season is 699.0 mm which is 88% of average annual rainfall of 794.0 mm. Sometimes it rains heavily in Delhi in this season. The highest rainfall ever recorded in 24 hours is 265.8 mm on 9th July, 1972. The mean maximum and minimum temperatures in this season are around 35ºC and 25ºC respectively. During the months October and November weather is generally fair and pleasant in Delhi where mean maximum and minimum temperatures are around 31ºC and 15ºC respectively. In the month of December weather becomes cold and sometimes fog prevails in morning and late night. Sometimes western disturbances occur and give a good amount of rainfall. The maximum and minimum temperatures in this month are around 23ºC and 7ºC respectively. The highest maximum temperature and the lowest minimum temperature ever recorded at this airport are 47.5ºC on 26th May, 1984 and -2.2ºC on 1st January, 1952 respectively.
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FI
GU
RE
S
AERONAUTICALCLIMATOLOGICAL
SUMMARIES
FIG. 1(a) - NO. OF WEATHER PARAMETERS
FIG. 1(b) - RELATIVE HUMIDITY
FIG. 1(c) - AVERAGE MONTHLY RAINFALL
FIG. 2(a) - VISIBILITY - MORNING
FIG. 2(b) - VISIBILITY - AFTERNOON
FIG. 3(a) - CLOUD AMOUNT - MORNING
FIG. 3(b) - LOW CLOUD AMOUNT - MORNING
FIG. 3(c) - HEIGHT OF LOW CLOUD - MORNING
4 AFTERNOON
4 AFTERNOON
4 AFTERNOON
FIG. (a) - CLOUD AMOUNT -
FIG. (b) - LOW CLOUD AMOUNT -
FIG. (c) - HEIGHT OF LOW CLOUD -
FIG. 5 - WINDROSES - MORNING
FIG. 6 - WINDROSES - AFTERNOON
FIG. 7(a) - MONTHLY MEAN TEMPERATURE
FIG. 7(b) - HIGHEST MAXIMUM TEMPERATURE - EVER RECORDED
FIG. 7(c) - LOWEST MINIMUM TEMPERATUER - EVER RECORDED
FIG. 8 - STATION LEVEL PRESSURE
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
AERONAUTICALCLIMATOLOGICAL
SUMMARIES
MO
DE
L-
A
JANUARY FEBRUARY MARCH
APRIL MAY JUNE
JULY AUGUST SEPTEMBER
OCTOBER NOVEMBER DECEMBER
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
1
CLIMATOLOGICAL SUMMARY
MODEL – A
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34' N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07' E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times.
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 1.2 1.8 3.6 6.4 2.4 5.6 2.8 0.8 24.601 1.2 1.2 5.2 5.6 2.6 5.4 2.8 0.8 24.802 2.0 1.8 4.8 3.6 4.6 5.6 2.6 0.4 25.403 2.8 1.8 3.2 2.2 7.4 4.2 3.4 0.4 25.404 1.8 1.2 3.6 1.8 6.6 3.4 6.2 0.6 25.205 0.4 0.6 2.4 1.4 7.4 2.2 9.0 2.0 25.406 1.2 0.6 6.2 3.2 10.4 3.8 25.407 0.2 0.8 5.0 2.8 10.2 7.0 26.008 0.6 3.0 2.2 10.6 9.2 25.609 0.2 2.8 0.4 11.8 10.2 25.410 0.2 1.4 1.8 12.0 9.6 25.011 1.4 1.6 12.4 9.8 25.212 2.0 2.4 13.2 7.8 25.413 0.8 1.0 6.2 14.8 2.2 25.014 0.2 1.8 0.8 9.8 11.6 1.0 25.215 0.2 3.8 1.4 12.0 7.6 0.4 25.416 0.6 6.0 2.0 11.0 5.6 0.2 25.417 1.6 6.2 3.2 9.4 4.6 0.2 25.218 2.0 6.2 4.2 9.0 3.6 0.6 25.619 0.2 0.2 2.4 6.0 4.2 8.0 3.6 0.8 25.420 0.2 0.8 3.0 5.4 3.4 7.4 4.0 0.8 25.021 1.0 0.8 2.6 5.4 3.2 7.4 3.8 1.0 25.222 0.8 1.4 3.4 6.2 2.8 6.2 3.2 1.2 25.223 1.4 1.4 3.8 6.2 1.8 6.6 2.8 1.2 25.2
TOTAL 13.0 13.0 44.2 77.2 80.8 133.8 172.6 72.0 606.6
M O
D E
L - A
2
CLIMATOLOGICAL SUMMARY
MODEL – A
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.2 2.8 3.6 4.0 9.6 6.0 1.0 27.201 2.6 4.4 4.8 9.2 5.4 0.6 27.002 0.2 2.6 3.2 8.4 7.6 4.4 0.4 26.803 2.2 3.2 9.8 5.6 5.8 0.2 26.804 1.4 1.6 7.8 5.0 9.4 1.8 27.005 0.4 0.6 4.2 3.4 13.4 4.6 26.606 1.6 1.2 15.0 9.4 27.207 0.8 1.0 10.2 14.6 26.608 0.2 0.4 0.4 5.2 20.0 26.209 0.2 0.8 3.8 22.0 26.810 0.2 0.2 0.2 4.0 21.4 26.011 0.4 4.4 20.8 25.612 0.2 4.8 21.2 26.213 1.4 7.6 17.8 26.814 0.2 2.0 15.6 8.8 26.615 0.4 6.0 16.8 3.8 27.016 0.6 0.2 8.0 15.8 2.4 27.017 1.2 0.2 9.6 14.0 2.0 27.018 0.2 2.8 0.2 9.0 13.2 1.8 27.219 0.2 2.6 1.4 9.4 11.4 2.2 27.220 0.4 3.4 0.8 10.4 10.4 1.6 27.021 1.2 2.8 2.2 10.0 9.8 1.2 27.222 0.2 1.4 2.6 3.4 9.8 8.8 1.0 27.223 0.2 1.4 2.8 4.8 9.8 6.8 1.4 27.2
TOTAL 0.4 0.6 16.8 36.0 55.6 130.0 222.0 182.0 643.4
M O
D E
L - A
3
CLIMATOLOGICAL SUMMARY
MODEL – A Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.2 0.4 2.2 0.8 6.6 15.0 3.4 28.601 0.2 0.4 2.4 2.0 7.2 14.2 2.0 28.402 0.2 0.4 1.6 5.8 7.6 11.4 1.6 28.603 0.4 0.2 0.6 7.2 3.8 14.4 2.4 29.004 0.2 3.0 3.6 16.0 6.2 29.005 0.2 0.2 0.6 14.6 13.2 28.806 0.2 9.0 19.2 28.407 0.2 3.0 25.4 28.608 2.2 26.8 29.009 1.6 26.6 28.210 1.2 25.8 27.011 0.2 0.2 1.4 24.8 26.612 0.2 0.2 1.2 26.0 27.613 3.0 25.8 28.814 0.2 10.0 18.8 29.015 0.4 18.2 10.4 29.016 0.8 21.4 6.4 28.617 1.8 21.0 6.0 28.818 4.0 20.6 4.4 29.019 0.2 0.4 5.2 18.8 4.4 29.020 0.2 0.2 0.4 5.8 17.8 4.2 28.621 0.2 0.4 8.2 15.6 4.4 28.822 0.4 1.0 8.4 14.4 4.2 28.423 0.2 0.2 2.2 0.2 6.8 15.4 3.6 28.6
TOTAL 1.8 1.8 11.4 20.4 71.6 281.4 296.0 684.4
M O
D E
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4
CLIMATOLOGICAL SUMMARY
MODEL – A
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.2 5.2 18.8 5.2 29.401 0.2 1.2 4.6 20.0 4.0 30.002 2.2 3.0 20.6 4.0 29.803 1.2 2.2 20.0 6.6 30.004 1.4 16.0 12.6 30.005 0.2 10.6 19.2 30.006 0.2 6.4 23.0 29.607 4.2 24.6 28.808 3.2 23.8 27.009 0.2 3.2 20.8 24.210 3.4 20.6 24.011 3.6 20.4 24.012 4.0 23.8 27.813 0.2 4.6 24.8 29.614 0.2 0.4 9.6 19.6 29.815 0.8 18.8 10.2 29.816 1.2 22.8 5.8 29.817 0.2 1.8 23.8 4.0 29.818 2.4 23.6 4.0 30.019 3.0 22.6 4.4 30.020 3.2 21.8 5.0 30.021 3.6 20.6 5.8 30.022 4.2 19.4 5.8 29.423 0.2 4.6 18.8 6.2 29.8
TOTAL 0.6 5.2 42.2 340.4 304.2 692.6
M O
D E
L - A
5
CLIMATOLOGICAL SUMMARY
MODEL – A Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.2 2.6 19.6 8.4 30.801 1.0 2.4 18.8 8.2 30.402 0.2 1.6 1.8 16.2 11.0 30.803 0.2 1.0 1.6 13.2 14.6 30.604 0.8 0.6 13.0 16.6 31.005 0.2 0.4 10.4 20.0 31.006 0.2 0.4 0.2 9.2 20.8 30.807 9.6 20.4 30.008 0.2 8.6 20.6 29.409 0.2 9.0 20.6 29.810 0.4 8.6 20.8 29.811 0.2 0.2 9.6 19.6 29.612 0.8 9.4 19.6 29.813 0.2 1.0 10.6 18.4 30.214 1.4 13.2 16.0 30.615 0.2 1.0 19.6 10.2 31.016 0.2 2.0 21.2 7.6 31.017 3.0 20.6 7.0 30.618 2.8 21.6 6.4 30.819 2.8 21.2 6.8 30.820 3.0 20.6 7.4 31.021 2.8 19.8 8.4 31.022 2.8 19.0 8.6 30.423 0.2 1.8 19.0 9.0 30.0
TOTAL 0.2 1.4 6.0 35.0 361.6 327.0 731.2
M O
D E
L - A
6
CLIMATOLOGICAL SUMMARY
MODEL – A Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times.
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.2 2.0 17.0 9.2 28.401 0.6 2.2 16.6 9.2 28.602 0.6 2.2 16.8 9.0 28.603 0.2 1.8 14.6 11.8 28.404 0.2 0.6 12.2 15.2 28.205 0.6 9.0 18.8 28.406 0.6 7.8 19.6 28.007 0.2 0.2 7.4 20.4 28.208 0.2 0.6 0.4 5.8 20.8 27.809 0.2 7.0 19.8 27.010 0.2 0.2 0.2 5.8 21.0 27.411 0.4 0.4 5.4 21.4 27.612 0.2 0.6 6.0 21.4 28.213 0.2 0.4 6.6 21.4 28.614 0.2 0.6 8.2 19.2 28.215 0.2 0.6 11.2 16.0 28.016 0.6 13.0 14.4 28.017 0.6 15.2 12.4 28.218 0.6 15.0 13.0 28.619 0.6 15.6 12.0 28.220 0.6 15.4 11.8 27.821 0.2 0.8 14.4 12.8 28.222 0.2 1.0 15.6 11.2 28.023 0.2 1.2 15.6 10.8 27.8
TOTAL 0.4 1.0 3.6 19.6 277.2 372.6 674.4
M O
D E
L - A
7
CLIMATOLOGICAL SUMMARY
MODEL – A
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times.
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.2 1.2 15.2 14.6 31.201 0.4 1.6 14.8 13.8 30.602 0.4 1.8 14.0 14.6 30.803 0.2 0.8 14.2 16.0 31.204 0.2 0.2 11.4 19.4 31.205 0.2 0.2 8.6 22.0 31.006 0.4 7.6 22.8 30.807 0.2 7.0 23.0 30.208 0.2 0.2 5.6 24.2 30.209 0.2 6.0 24.0 30.210 0.2 0.4 0.2 6.4 23.4 30.611 0.2 7.8 22.6 30.612 0.2 8.2 22.2 30.613 0.2 8.8 21.6 30.614 0.2 10.4 20.2 30.815 12.6 17.8 30.416 0.2 14.6 16.2 31.017 15.8 15.0 30.818 17.0 14.0 31.019 15.4 15.4 30.820 0.2 16.2 14.6 31.021 0.4 15.2 15.0 30.622 1.0 14.6 15.2 30.823 0.2 1.4 14.0 15.4 31.0
TOTAL 0.2 0.4 3.0 10.0 281.4 443.0 738.0
M O
D E
L - A
8
CLIMATOLOGICAL SUMMARY
MODEL – A Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times.
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 1.2 12.0 12.4 25.601 0.2 1.2 12.4 11.6 25.402 0.2 1.2 10.2 13.8 25.403 0.2 0.6 10.0 15.0 25.804 0.4 8.4 16.8 25.605 0.2 0.2 6.4 18.8 25.606 0.4 5.4 19.6 25.407 0.2 4.8 20.2 25.208 0.4 3.0 21.8 25.209 0.2 0.2 0.2 3.6 21.6 25.810 0.8 4.0 21.2 26.011 0.4 0.4 4.0 21.2 26.012 0.2 4.4 21.2 25.813 0.2 5.8 20.0 26.014 0.2 0.6 8.2 17.0 26.015 0.2 0.4 9.8 15.6 26.016 0.8 10.6 14.6 26.017 0.2 0.4 11.4 14.0 26.018 0.2 0.6 12.0 13.0 25.819 0.6 12.8 12.4 25.820 0.4 12.8 12.8 26.021 0.6 11.4 13.6 25.622 1.0 11.2 13.4 25.623 0.8 11.6 13.4 25.8
TOTAL 1.0 1.6 13.6 206.2 395.0 617.4
M O
D E
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9
CLIMATOLOGICAL SUMMARY
MODEL – A Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times.
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.2 1.8 17.6 10.2 29.801 0.4 1.8 18.0 9.2 29.402 0.4 3.0 15.4 11.0 29.803 1.8 14.6 13.4 29.804 0.2 0.8 11.6 17.4 30.005 0.2 0.6 8.6 20.6 30.006 0.4 5.8 23.6 29.807 0.6 4.0 25.2 29.808 0.6 4.4 25.0 30.009 0.2 0.4 4.0 24.8 29.410 0.4 3.4 25.8 29.611 0.2 4.0 25.6 29.812 4.8 25.4 30.213 8.0 22.0 30.014 0.4 13.0 16.6 30.015 0.4 13.4 15.4 29.216 0.8 14.0 14.4 29.217 0.4 16.4 12.6 29.418 0.2 1.0 16.4 12.2 29.819 2.0 16.0 11.8 29.820 1.6 16.0 11.8 29.421 2.0 15.8 12.0 29.822 0.4 1.6 15.8 11.6 29.423 0.4 1.8 16.4 11.0 29.6
TOTAL 1.4 1.2 24.4 277.4 408.6 713.0
M O
D E
L - A
10
CLIMATOLOGICAL SUMMARY
MODEL – A Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times.
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 2.0 0.4 9.4 17.8 1.4 31.001 1.8 0.6 9.2 18.4 0.8 30.802 0.2 3.6 8.8 17.0 0.6 30.203 0.6 4.8 5.6 18.4 1.6 31.004 0.2 2.0 3.6 21.0 4.2 31.005 0.2 1.2 2.6 17.4 9.6 31.006 0.8 1.4 14.0 15.0 31.207 0.2 0.8 11.2 18.0 30.208 0.6 8.8 21.2 30.609 0.2 0.2 7.4 23.4 31.210 0.2 0.4 6.4 24.0 31.011 0.4 7.4 23.4 31.212 0.6 12.0 18.2 30.813 1.4 20.2 9.2 30.814 4.0 22.6 4.4 31.015 9.6 18.8 2.8 31.216 0.2 12.2 16.2 2.4 31.017 1.4 13.8 14.2 1.8 31.218 1.4 0.2 15.4 12.4 1.6 31.019 1.2 0.2 15.0 12.8 1.6 30.820 1.8 0.2 13.6 13.0 1.8 30.421 1.4 0.2 12.6 14.6 1.8 30.622 1.8 0.2 11.4 16.0 1.6 31.023 1.8 0.4 11.2 16.4 1.2 31.0
TOTAL 16.0 15.4 163.8 354.4 191.6 741.2
M O
D E
L - A
11
CLIMATOLOGICAL SUMMARY
MODEL – A
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times.
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.4 3.4 1.2 14.4 10.2 0.2 29.801 3.6 1.6 13.0 11.4 29.602 0.2 1.8 6.4 11.6 9.6 0.2 29.803 0.2 0.2 9.6 7.2 11.6 1.2 30.004 0.2 0.2 6.2 4.2 17.4 1.8 30.005 0.2 3.4 4.4 17.4 4.6 30.006 1.6 3.4 16.0 9.0 30.007 1.0 0.8 15.2 13.0 30.008 0.4 10.8 18.8 30.009 0.4 7.8 21.8 30.010 0.6 6.4 23.0 30.011 0.6 0.8 7.2 21.0 29.612 2.0 14.8 13.0 29.813 0.4 3.6 22.4 3.4 29.814 0.4 8.4 20.0 1.0 29.815 0.8 0.4 14.6 13.6 0.2 29.616 2.0 0.4 18.4 9.0 29.817 3.4 0.4 18.0 8.0 0.2 30.018 4.2 1.0 17.2 7.2 0.2 29.819 0.2 5.2 0.8 15.6 7.8 0.2 29.820 0.2 5.2 0.8 15.4 8.2 0.2 30.021 4.6 1.2 15.4 8.8 30.022 0.2 4.8 1.0 14.8 9.2 30.023 0.2 4.6 1.2 13.4 10.2 0.2 29.8
TOTAL 0.2 1.6 45.0 38.8 218.0 280.2 133.2 717.0
M O
D E
L - A
12
CLIMATOLOGICAL SUMMARY
MODEL – A
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of runway visual range/visibility (both in metres) and/or the height of the base of the lowest cloud layer (in metres), covering
more than 4/8th of the sky, below specified values at specified times.
RVR OR VIS / HS VIS / HS TIME (UTC)
<100 -
<200 -
<400 <30
<800 <60
<1500 <90
<1500 <150
<3000 <300
<8000 <600
TOTAL
00 0.8 3.6 6.8 5.6 10.0 3.4 30.201 0.8 3.8 8.0 4.8 9.2 3.8 30.402 1.0 0.2 4.4 3.2 10.0 8.2 3.4 30.403 0.6 0.4 4.0 3.2 12.6 5.8 4.2 30.804 0.2 0.6 3.4 1.2 12.0 5.0 7.2 0.6 30.205 0.2 0.4 2.4 1.0 10.0 4.0 10.8 1.8 30.606 0.4 0.6 1.2 7.0 4.4 13.0 4.0 30.607 0.2 0.2 0.6 5.2 3.8 13.8 6.8 30.608 0.4 4.0 2.8 13.8 9.6 30.609 0.2 3.2 2.0 12.8 12.4 30.610 0.4 2.8 2.2 12.0 13.4 30.811 0.2 3.0 3.0 12.6 11.8 30.612 1.0 1.4 5.6 16.0 6.6 30.613 2.8 1.4 7.6 17.8 1.2 30.814 0.4 2.2 3.6 11.2 13.0 0.2 30.615 0.8 3.8 3.4 15.4 7.2 0.2 30.816 1.8 6.0 3.0 14.8 5.4 0.2 31.217 2.2 7.4 3.2 13.8 4.2 0.2 31.018 0.2 0.2 2.6 6.8 3.8 13.8 3.4 0.2 31.019 0.2 2.2 7.2 4.6 14.0 2.6 30.820 0.2 3.2 7.0 5.2 12.0 3.2 30.821 0.2 0.4 3.6 8.0 4.2 11.4 3.0 30.822 0.2 4.6 8.0 5.0 10.2 2.8 30.823 0.4 0.2 4.2 7.0 5.8 10.4 2.8 30.8
TOTAL 4.4 3.8 48.0 93.4 124.8 200.6 192.2 69.2 736.4
M O
D E
L - A
Fig. 1 (a) Number of days of weather parameters
Fig. 1(b) Relative Humidity (percentage)
Fig. 1(c) Average Monthly Rainfall (mm)
Rain 2 2.4 2.4 1.8 2.5 5.6 14 14 7 2 0.7 1.2
Thunder 1.3 1.8 2.8 2.9 5.5 5.5 8.8 7.3 3.7 1.4 0.5 0.7
Dust Storm 0 0.2 0.4 1.5 3.5 3.4 0.8 0 0 0.2 0 0.3
Hail 0.1 0 0.2 0.3 0 0 0.1 0 0 0 0 0.1
Fog 3 1.2 0.2 0 0.1 0 0.1 0 0.1 0.2 0.4 3.3
Squall 0 0 0.4 0.5 0.9 1.4 0.5 0.4 0.2 0.4 0 0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
20
40
60
80
100
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
%
morning (0300 UTC) afternoon (1200 UTC)
14.8 14.1 9.3 6.118.9
54.2
241.1
284.3
119.4
16.86.4 8.6
0
50
100
150
200
250
300
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mili
met
ers
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
MO
DE
L-
B
AERONAUTICALCLIMATOLOGICAL
SUMMARIES
JANUARY FEBRUARY MARCH
APRIL MAY JUNE
JULY AUGUST SEPTEMBER
OCTOBER NOVEMBER DECEMBER
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
13
CLIMATOLOGICAL SUMMARY
MODEL – B
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 6.8 2.2 2.4 4.0 5.8 2.8 0.6 24.601 7.4 2.8 2.4 3.2 5.6 2.8 0.6 24.802 9.4 2.0 2.6 2.0 6.4 2.6 0.2 25.203 8.8 1.4 1.2 2.8 7.4 3.4 0.2 25.204 6.8 1.2 1.6 1.6 7.0 6.4 0.6 25.205 3.6 1.0 2.0 2.4 5.0 9.4 1.8 0.2 25.406 1.2 0.4 0.6 3.0 5.8 10.2 3.4 0.2 24.807 0.2 0.2 0.8 1.2 6.2 10.2 5.4 1.2 25.408 0.4 0.4 0.4 4.4 10.6 7.2 2.0 25.409 0.2 0.4 0.6 2.2 11.8 8.0 2.2 25.410 0.4 0.6 2.4 12.0 7.6 2.0 25.011 0.2 0.2 2.6 12.4 8.2 1.6 25.212 0.4 0.8 3.0 13.4 7.0 0.8 25.413 1.2 0.6 6.2 14.8 2.2 25.014 0.2 0.6 0.6 1.2 9.8 11.6 1.2 25.215 0.4 0.6 1.8 2.4 12.2 7.6 0.2 0.2 25.416 0.6 1.2 2.8 3.6 11.4 5.6 0.2 25.417 1.6 2.2 1.6 5.6 9.6 4.6 0.2 25.418 2.2 2.4 2.8 5.0 9.0 3.6 0.4 25.419 3.8 2.0 3.6 3.6 8.0 3.6 0.6 25.220 4.4 1.6 3.6 3.0 7.4 4.2 0.6 24.821 5.4 1.6 3.2 2.6 7.4 4.0 0.8 25.022 6.2 2.2 2.8 3.2 6.2 3.4 1.0 25.023 6.2 2.4 1.8 4.2 6.6 2.8 0.8 24.8
TOTAL 75.2 28.6 41.2 57.8 157.6 173.8 59.0 10.4 603.6
M O
D E
L - B
14
CLIMATOLOGICAL SUMMARY
MODEL – B Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 2.8 3.2 1.8 2.8 9.6 5.8 1.0 27.001 3.4 2.6 2.8 3.0 9.2 5.2 0.6 26.802 3.6 2.6 2.8 3.0 9.6 4.6 0.2 0.2 26.603 2.6 1.8 2.2 4.0 10.2 5.8 26.604 0.6 1.4 1.2 2.2 10.2 9.6 1.6 26.805 0.2 0.4 1.0 0.6 6.4 13.4 4.6 26.606 0.2 0.6 2.0 15.0 8.2 1.2 27.207 0.2 1.6 10.2 11.6 3.0 26.608 0.2 0.8 5.2 13.2 6.8 26.209 0.2 0.8 3.8 12.4 9.6 26.810 0.4 0.2 4.0 10.8 10.6 26.011 0.4 4.4 11.2 9.6 25.612 0.2 4.8 13.8 7.4 26.213 1.4 7.6 15.4 2.4 26.814 2.2 15.6 8.8 26.615 0.2 0.2 6.0 16.8 3.8 27.016 0.2 0.6 8.0 15.8 2.4 27.017 0.2 1.2 9.6 14.0 2.0 27.018 0.2 0.6 2.4 9.0 13.2 1.6 0.2 27.219 0.2 1.0 1.0 2.0 9.4 11.4 2.0 0.2 27.220 0.6 0.6 1.4 2.0 10.4 10.4 1.4 0.2 27.021 1.4 0.4 2.0 2.4 10.0 9.8 1.0 27.022 1.4 1.0 3.2 1.8 10.0 8.8 1.0 27.223 1.8 2.8 2.6 1.6 10.0 6.8 1.4 27.0
TOTAL 19.0 18.0 23.6 30.8 147.2 222.0 130.0 51.4 642.0
M O
D E
L - B
15
CLIMATOLOGICAL SUMMARY
MODEL – B Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 0.6 0.2 1.4 1.4 6.6 15.0 3.4 28.601 0.6 0.4 0.8 2.6 7.8 14.2 2.0 28.402 0.6 0.6 1.0 3.0 10.4 11.4 1.6 28.603 0.4 0.4 0.6 2.2 8.6 14.4 2.4 29.004 0.2 0.8 5.8 16.0 6.2 29.005 0.2 0.8 14.6 12.8 0.4 28.806 0.2 9.0 16.4 2.8 28.407 0.2 3.0 18.4 7.0 28.608 2.2 12.0 14.8 29.009 1.6 8.2 18.4 28.210 1.2 7.6 18.2 27.011 0.2 0.2 1.4 7.0 17.8 26.612 0.2 0.2 1.2 10.4 15.6 27.613 3.0 18.6 7.2 28.814 0.2 10.0 18.6 0.2 29.015 0.4 18.2 10.4 29.016 0.8 21.4 6.4 28.617 1.8 21.0 6.0 28.818 4.0 20.6 4.4 29.019 0.2 0.2 5.4 18.8 4.4 29.020 0.2 0.2 6.0 18.0 4.2 28.621 0.2 0.4 8.2 15.6 4.2 0.2 28.822 0.4 0.2 0.8 8.4 14.4 4.0 0.2 28.423 0.4 0.2 0.2 2.0 6.8 15.4 3.4 0.2 28.6
TOTAL 3.2 2.0 5.4 13.6 82.6 281.6 193.0 103.0 684.4
M O
D E
L - B
16
CLIMATOLOGICAL SUMMARY
MODEL – B
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 0.2 5.2 18.8 5.2 29.401 0.2 5.8 20.0 4.0 30.002 0.2 4.8 20.8 3.8 0.2 29.803 3.4 20.0 6.2 0.4 30.004 1.4 16.0 11.8 0.8 30.005 0.2 10.6 17.8 1.4 30.006 0.2 6.4 17.2 5.8 29.607 4.2 15.0 9.6 28.808 3.2 11.2 12.6 27.009 0.2 3.2 7.2 13.6 24.210 3.4 6.2 14.4 24.011 3.6 6.2 14.2 24.012 4.0 7.6 16.2 27.813 0.2 4.6 14.0 10.8 29.614 0.2 0.4 9.6 18.8 0.8 29.815 0.8 18.8 10.2 29.816 1.2 22.8 5.8 29.817 0.2 1.8 23.8 4.0 29.818 2.4 23.6 4.0 30.019 3.0 22.6 4.4 30.020 3.2 21.8 5.0 30.021 3.6 20.6 5.8 30.022 4.2 19.4 5.8 29.423 4.8 18.8 6.2 29.8
TOTAL 0.2 0.4 0.6 46.6 340.6 203.4 100.8 692.6
M O
D E
L - B
17
CLIMATOLOGICAL SUMMARY
MODEL – B Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 0.2 2.6 19.6 8.2 0.2 30.801 0.4 3.0 18.8 7.8 0.4 30.402 0.2 0.4 3.0 16.2 10.2 0.6 30.603 0.2 0.2 2.4 13.2 13.4 1.2 30.604 1.4 13.0 14.4 2.2 31.005 0.2 0.4 10.4 15.2 4.8 31.006 0.2 0.4 9.4 13.8 7.0 30.807 9.6 12.2 8.2 30.008 0.2 8.6 10.6 10.0 29.409 0.2 0.2 9.0 10.0 10.6 30.010 0.4 8.6 10.0 10.8 29.811 0.4 9.6 9.0 10.6 29.612 0.8 9.4 10.8 8.8 29.813 0.2 1.0 10.6 12.0 6.4 30.214 1.4 13.2 14.2 1.8 30.615 0.2 1.0 19.6 10.0 0.2 31.016 0.2 2.0 21.2 7.6 31.017 3.0 20.6 7.0 30.618 2.8 21.6 6.4 30.819 2.8 21.2 6.6 0.2 30.820 3.0 20.6 7.0 0.4 31.021 2.8 19.8 8.0 0.4 31.022 2.8 19.0 8.6 30.423 0.2 1.8 19.0 9.0 30.0
TOTAL 0.2 0.4 0.4 2.0 39.6 361.8 242.0 84.8 731.2
M O
D E
L - B
18
CLIMATOLOGICAL SUMMARY
MODEL – B Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in mertes) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 2.2 17.0 9.2 28.401 0.2 2.6 16.6 9.2 28.602 2.8 16.8 8.8 0.2 28.603 0.2 1.8 14.6 11.4 0.4 28.404 0.2 0.6 12.2 14.6 0.6 28.205 0.6 9.0 16.8 2.0 28.406 0.6 7.8 15.8 3.8 28.007 0.2 0.2 7.4 15.2 5.2 28.208 0.2 0.8 6.0 14.4 6.4 27.809 0.2 7.0 13.4 6.4 27.010 0.2 0.4 5.8 13.8 7.2 27.411 0.8 5.4 15.0 6.4 27.612 0.8 6.0 14.8 6.6 28.213 0.6 6.6 16.4 5.0 28.614 0.8 8.2 16.8 2.4 28.215 0.2 0.6 11.2 16.0 28.016 0.6 13.0 14.4 28.017 0.6 15.2 12.4 28.218 0.6 15.0 13.0 28.619 0.6 15.6 12.0 28.220 0.6 15.4 11.8 27.821 0.2 0.8 14.4 12.8 28.222 0.2 1.0 15.6 11.2 28.023 0.2 1.2 15.6 10.8 27.8
TOTAL 0.2 0.2 0.8 0.8 22.4 277.4 320.0 52.6 674.4
M O
D E
L - B
19
CLIMATOLOGICAL SUMMARY
MODEL – B Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 0.2 1.2 15.2 14.4 31.001 2.0 14.8 13.6 30.402 2.2 14.0 14.0 0.4 30.603 0.2 0.8 14.2 14.6 1.2 31.004 0.2 11.6 17.0 2.0 30.805 0.2 0.2 8.6 17.6 4.0 30.606 0.4 7.6 16.2 6.4 30.607 0.2 7.0 16.8 6.2 30.208 0.4 5.6 16.8 7.4 30.209 0.2 6.0 14.4 9.4 30.010 0.2 0.4 6.6 15.0 8.2 30.411 7.8 14.6 8.2 30.612 0.2 8.2 15.6 6.4 30.413 0.2 8.8 16.8 4.8 30.614 0.2 10.4 18.0 2.2 30.815 12.6 17.2 0.6 30.416 0.2 14.6 16.0 0.2 31.017 15.8 14.8 0.2 30.818 17.0 13.8 0.2 31.019 15.4 15.4 30.820 0.2 16.2 14.4 0.2 31.021 0.4 15.2 14.8 0.2 30.622 1.0 14.6 15.0 0.2 30.823 1.6 14.0 15.4 31.0
TOTAL 0.4 0.8 11.8 281.8 372.2 68.6 735.6
M O
D E
L - B
20
CLIMATOLOGICAL SUMMARY
MODEL – B
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 1.2 12.0 12.4 25.601 1.2 12.4 11.4 0.2 25.202 0.2 1.2 10.2 12.8 0.8 25.203 0.8 10.0 14.2 0.8 25.804 0.4 8.4 14.4 2.4 25.605 0.4 6.4 14.4 4.4 25.606 0.4 5.4 13.0 6.6 25.407 0.2 4.8 10.8 9.4 25.208 0.4 3.0 10.2 11.6 25.209 0.2 0.4 3.6 10.0 11.6 25.810 0.8 4.0 9.6 11.6 26.011 0.2 0.6 4.0 10.8 10.4 26.012 0.2 4.4 12.2 9.0 25.813 0.2 5.8 16.6 3.4 26.014 0.8 8.2 16.0 1.0 26.015 0.2 0.4 9.8 15.6 26.016 0.8 10.6 14.6 26.017 0.2 0.4 11.4 14.0 26.018 0.2 0.6 12.0 13.0 25.819 0.6 12.6 12.4 25.620 0.4 12.8 12.8 26.021 0.6 11.4 13.6 25.622 1.0 11.2 13.4 25.623 0.8 11.6 13.4 25.8
TOTAL 0.2 0.2 0.8 14.8 206.0 311.6 83.2 616.8
M O
D E
L - B
21
CLIMATOLOGICAL SUMMARY
MODEL – B
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 0.2 1.8 17.6 10.2 29.801 0.4 1.8 18.0 9.2 29.402 3.4 15.4 10.8 29.603 1.8 14.6 13.2 29.604 1.0 11.6 15.6 1.4 29.605 0.8 8.6 16.0 4.4 29.806 0.4 5.8 17.6 5.8 29.607 0.6 4.0 15.2 9.8 29.608 0.2 0.6 4.2 13.0 11.6 29.609 0.6 4.0 12.6 12.0 29.210 0.4 3.4 13.6 11.8 29.211 0.2 4.0 14.2 11.0 29.412 4.8 16.2 8.8 29.813 8.0 19.4 2.4 29.814 0.4 13.0 16.2 0.2 29.815 0.4 13.4 15.2 29.016 0.8 14.0 14.2 29.017 0.4 16.4 12.4 29.218 1.0 16.6 12.0 29.619 2.0 16.0 11.8 29.820 1.6 16.0 11.8 29.421 2.0 15.8 12.0 29.822 0.4 1.6 15.8 11.6 29.423 0.2 0.2 1.8 16.4 11.0 29.6
TOTAL 0.2 0.2 1.2 25.4 277.4 325.0 79.2 708.6
M O
D E
L - B
22
CLIMATOLOGICAL SUMMARY
MODEL – B Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 2.0 9.6 18.0 1.4 31.001 0.2 2.0 9.4 18.4 0.8 30.802 0.8 11.6 17.0 0.8 30.203 0.6 1.2 9.0 18.6 1.6 31.004 0.6 5.0 21.0 4.0 0.2 30.805 0.4 3.4 17.6 9.4 0.2 31.006 2.2 13.8 14.4 0.6 31.007 1.0 11.0 16.4 1.6 30.008 0.6 8.6 18.4 2.8 30.409 0.4 7.2 17.4 6.0 31.010 0.6 6.2 16.4 7.6 30.811 0.4 7.2 17.2 6.0 30.812 0.6 12.0 15.8 2.4 30.813 1.4 20.2 9.0 0.2 30.814 4.0 22.6 4.2 0.2 31.015 9.6 18.8 2.6 31.016 0.2 12.2 16.2 2.2 30.817 0.2 1.2 13.8 14.2 1.6 31.018 0.2 1.4 15.4 12.4 1.6 31.019 0.2 1.2 15.0 12.8 1.6 30.820 1.6 13.8 13.2 1.8 30.421 1.4 12.8 14.6 1.8 30.622 1.8 11.6 16.0 1.6 31.023 1.8 11.4 16.6 1.2 31.0
TOTAL 1.4 17.6 174.8 354.2 163.2 27.8 739.0
M O
D E
L - B
23
CLIMATOLOGICAL SUMMARY
MODEL – B
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 0.4 0.2 1.0 3.4 14.4 10.2 0.2 29.801 0.2 0.4 1.2 3.4 13.0 11.4 29.602 0.2 0.4 1.4 2.8 15.2 9.6 0.2 29.803 0.2 0.2 0.8 2.2 13.6 11.6 1.2 29.804 0.4 0.6 0.8 8.8 17.6 1.8 30.005 0.4 0.6 7.0 17.4 4.6 30.006 0.4 4.4 16.2 9.0 30.007 1.8 15.2 12.0 1.0 30.008 0.4 10.8 15.0 3.8 30.009 0.4 7.8 16.2 5.6 30.010 0.6 6.4 16.4 6.6 30.011 1.2 7.4 16.6 4.4 29.612 2.0 14.8 12.6 0.4 29.813 0.4 3.6 22.4 3.4 29.814 0.2 0.2 8.4 20.0 1.0 29.815 0.2 0.2 0.8 14.6 13.6 0.2 29.616 0.2 0.6 1.6 18.4 9.0 29.817 0.2 1.0 2.6 18.0 8.0 0.2 30.018 0.2 1.2 3.6 17.4 7.2 0.2 29.819 0.2 1.2 4.6 15.8 7.8 0.2 29.820 0.4 0.8 4.8 15.6 8.2 0.2 30.021 0.2 0.4 0.8 4.2 15.6 8.8 30.022 0.2 0.4 1.4 4.0 14.8 9.2 30.023 0.2 0.4 2.0 3.4 13.4 10.2 0.2 29.8
TOTAL 1.6 4.2 14.8 43.8 238.4 280.8 111.4 21.8 716.8
M O
D E
L - B
24
CLIMATOLOGICAL SUMMARY
MODEL – B
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of visibility below specified values (in metres) at the specified times.
VISIBILITY TIME (UTC)
<200
<400
<600
<800
<1500
<3000
<5000
<8000
TOTAL
00 5.2 1.8 4.2 5.4 10.0 3.4 0.2 30.201 5.6 1.8 4.2 5.8 9.2 3.8 30.402 5.6 3.0 3.8 5.4 9.2 3.4 30.403 4.6 2.6 4.4 6.2 8.8 4.2 30.804 4.2 0.4 2.2 4.8 10.8 7.2 0.6 30.205 3.6 0.4 3.4 10.6 10.8 1.8 30.606 0.8 1.4 0.4 1.4 9.6 13.0 4.0 30.607 0.6 0.8 1.4 7.0 14.0 6.8 30.608 0.4 0.4 0.2 6.0 14.0 9.4 0.2 30.609 0.2 1.0 4.2 12.8 11.6 0.8 30.610 0.2 0.4 4.4 12.2 11.6 1.8 30.611 1.0 5.2 12.6 10.6 1.2 30.612 0.4 1.4 6.2 15.8 6.6 30.413 0.4 1.4 2.4 7.6 17.8 1.2 30.814 0.6 1.4 2.2 1.6 11.6 13.0 0.2 30.615 1.4 1.6 2.4 2.4 15.6 7.2 0.2 30.816 2.2 1.4 2.8 4.4 14.8 5.2 0.2 31.017 2.4 2.6 2.2 5.6 13.8 4.2 0.2 31.018 3.6 1.8 2.8 5.2 14.0 3.4 0.2 31.019 4.0 1.8 3.2 5.2 14.0 2.6 30.820 4.4 2.4 3.6 5.0 12.2 3.2 30.821 4.8 1.8 3.2 6.6 11.4 3.0 30.822 5.0 1.6 5.2 6.0 10.2 2.8 30.823 5.2 1.8 5.0 5.6 10.4 2.8 30.8
TOTAL 63.8 30.2 55.4 87.8 236.8 192.4 65.4 4.0 735.8
M O
D E
L - B
20%
40%
60%
80%
100%
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
upto 1 km 1-4 km 4-10 km 10-20 km over 20 km
20%
40%
60%
80%
100%
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
upto 1 km 1-4 km 4-10 km 10-20 km over 20 km
Fig. 2 (a) Visibility – Morning (0300 UTC)
Fig. 2 (b) Visibility – Afternoon (1200 UTC)
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
MO
DE
L-
C
AERONAUTICALCLIMATOLOGICAL
SUMMARIES
JANUARY FEBRUARY MARCH
APRIL MAY JUNE
JULY AUGUST SEPTEMBER
OCTOBER NOVEMBER DECEMBER
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
25
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 0.2 0.2 01 0.2 0.2 02 0.2 0.2 03 0.2 0.2 04 05 06 0.2 0.2 0.4 07 0.2 0.2 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 0.2 0.2
TOTAL 0.4 1.2 1.6
M O
D E
L - C
26
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 0.2 0.2 01 0.2 0.2 02 0.2 0.2 03 0.2 0.2 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 0.2 0.2 22 23 0.2 0.2
TOTAL 0.6 0.6 1.2
M O
D E
L - C
27
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
TOTAL
M O
D E
L - C
28
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
TOTAL
M O
D E
L - C
29
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
TOTAL
M O
D E
L - C
30
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
TOTAL
M O
D E
L - C
31
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 0.2 0.2 05 0.2 0.2 06 07 08 09 10 11 12 0.2 0.2 13 14 15 16 17 18 19 20 21 22 23
TOTAL 0.6 0.6
M O
D E
L - C
32
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 0.2 0.2 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 0.2 0.2 20 21 22 23
TOTAL 0.2 0.2 0.4
M O
D E
L - C
33
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 0.2 0.2 05 0.2 0.2 06 0.2 0.2 07 08 0.2 0.2 09 10 0.2 0.2 11 0.2 0.2 12 0.2 0.2 13 0.2 0.2 14 0.2 0.2 15 0.2 0.2 16 0.2 0.2 17 0.2 0.2 18 0.2 0.2 19 20 21 22 23
TOTAL 0.2 2.4 2.6
M O
D E
L - C
34
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 05 06 0.2 0.2 07 0.2 0.2 08 0.2 0.2 09 0.2 0.2 10 0.2 0.2 11 0.2 0.2 0.4 12 13 14 15 0.2 0.2 16 0.2 0.2 17 0.2 0.2 18 19 20 21 22 23
TOTAL 1.2 0.8 2.0
M O
D E
L - C
35
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
TOTAL
M O
D E
L - C
36
CLIMATOLOGICAL SUMMARY
MODEL – C
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of height of the base (in metres) of the lowest cloud layer covering more than 4/8th of the sky below specified values at the specified times.
HS TIME (UTC)
<30
<60
<90
<150
<300
<450
TOTAL
00 01 02 03 04 05 06 07 08 09 10 0.2 0.2 11 12 0.2 0.2 13 14 15 16 0.2 0.2 17 18 19 20 21 22 23
TOTAL 0.6 0.6
M O
D E
L - C
20%
40%
60%
80%
100%
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
<300 meters 300-600 600-900 900-1500
1500-1950 1950-2400 >2400 meters
20%
40%
60%
80%
100%
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
clear sky 1-2 okta 3-5 okta 6-7 okta overcast
20%
40%
60%
80%
100%
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
clear sky 1-2 okta 3-5 okta 6-7 okta overcast
Fig. 3 (a) Cloud Amount – Morning (0300 UTC)
Fig. 3 (b) Low Cloud Amount – Morning (0300 UTC)
Fig. 3 (c) Height of Low Cloud – Morning (0300 UTC)
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
20%
40%
60%
80%
100%
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
<300 meters 300-600 600-900 900-1500
1500-1950 1950-2400 >2400 meters
20%
40%
60%
80%
100%
1 2 3 4 5 6 7 8 9 10 11 12
clear sky 1-2 okta 3-5 okta 6-7 okta overcast
20%
40%
60%
80%
100%
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
clear sky 1-2 okta 3-5 okta 6-7 okta overcast
Fig. 4 (a) Cloud Amount – Afternoon (1200 UTC)
Fig. 4 (b) Low Cloud Amount – Afternoon (1200 UTC)
Fig. 4 (c) Height of Low Cloud – Afternoon (1200 UTC)
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
MO
DE
L-
D
AERONAUTICALCLIMATOLOGICAL
SUMMARIES
JANUARY FEBRUARY MARCH
APRIL MAY JUNE
JULY AUGUST SEPTEMBER
OCTOBER NOVEMBER DECEMBER
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
00 UTC 12 UTC
03 UTC 15 UTC
06 UTC 18 UTC
09 UTC 21 UTC
37
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 13.0 13.0
Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 0.6 0.6 08-09-10 1.4 0.6 2.0 11-12-13 0.4 0.2 0.2 0.8 14-15-16 17-18-19 20-21-22 23-24-25 1.8 1.8 26-27-28 3.0 0.8 0.2 4.0 29-30-31 0.8 0.6 1.4 32-33-34 0.4 0.2 0.6
TOTAL 13.0 8.8 2.4 0.4 24.6
M O
D E
L - D
38
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 8.4 8.4
Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 0.6 0.6 08-09-10 0.8 0.4 1.2 11-12-13 1.0 1.0 2.0 14-15-16 0.4 0.4 17-18-19 0.2 0.2 20-21-22 0.6 0.2 0.8 23-24-25 3.0 0.6 3.6 26-27-28 3.0 2.4 5.4 29-30-31 1.4 1.0 2.4 32-33-34
TOTAL 8.4 11.2 5.4 0.2 25.2
M O
D E
L - D
39
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 2.4 2.4
Variable 35-36-01 0.4 0.402-03-04 0.2 0.2 0.405-06-07 0.2 0.208-09-10 0.6 0.6 1.211-12-13 0.6 1.0 0.4 2.014-15-16 0.4 0.8 1.217-18-19 0.4 0.4 0.820-21-22 0.4 0.423-24-25 1.4 0.4 1.826-27-28 3.6 3.0 6.629-30-31 2.4 3.0 1.0 6.432-33-34 0.2 0.8 1.0
TOTAL 2.4 10.8 10.2 1.4 24.8
M O
D E
L - D
40
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 0.6 0.6
Variable 35-36-01 0.4 0.2 0.602-03-04 0.2 0.2 0.405-06-07 08-09-10 0.6 0.6 1.211-12-13 1.0 0.4 0.2 1.614-15-16 0.2 0.4 0.2 0.817-18-19 1.0 0.2 1.220-21-22 0.4 0.423-24-25 0.2 0.4 0.626-27-28 2.0 2.8 0.2 5.029-30-31 3.0 4.8 1.4 0.2 9.432-33-34 1.8 1.8 3.6
TOTAL 0.6 10.8 11.6 2.2 0.2 25.4
M O
D E
L - D
41
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 2.6 2.6
Variable 35-36-01 0.4 0.4 02-03-04 0.6 0.6 05-06-07 0.4 0.4 08-09-10 1.8 0.4 2.2 11-12-13 0.4 0.4 0.8 14-15-16 0.4 0.4 17-18-19 20-21-22 23-24-25 0.8 0.8 26-27-28 3.0 1.0 0.2 4.2 29-30-31 5.8 4.6 0.6 11.0 32-33-34 1.4 0.6 2.0
TOTAL 2.6 15.0 7.0 0.8 25.4
M O
D E
L - D
42
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 12.4 12.4
Variable 35-36-01 0.6 0.602-03-04 0.6 0.605-06-07 08-09-10 1.6 0.4 2.011-12-13 0.4 0.4 0.2 1.014-15-16 0.4 0.417-18-19 0.4 0.420-21-22 23-24-25 0.8 0.826-27-28 2.4 0.6 3.029-30-31 2.0 0.4 2.432-33-34 1.2 0.6 1.8
TOTAL 12.4 10.4 2.4 0.2 25.4
M O
D E
L - D
43
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 15.4 15.4
Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.4 0.4 05-06-07 0.4 0.4 08-09-10 1.8 0.4 2.2 11-12-13 0.8 0.6 0.2 1.6 14-15-16 17-18-19 20-21-22 23-24-25 1.4 1.4 26-27-28 1.0 0.4 1.4 29-30-31 0.8 0.6 1.4 32-33-34 0.4 0.4 0.8
TOTAL 15.4 7.2 2.6 0.2 25.4
M O
D E
L - D
44
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 16.0 16.0
Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 0.2 0.4 0.6 08-09-10 1.8 1.8 11-12-13 0.2 0.8 1.0 14-15-16 0.2 0.2 17-18-19 20-21-22 0.2 0.2 23-24-25 1.4 1.4 26-27-28 1.0 0.6 1.6 29-30-31 1.2 0.6 1.8 32-33-34 0.2 0.2
TOTAL 16.0 6.4 2.6 25.0
M O
D E
L - D
45
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 14.6 14.6
Variable 35-36-01 0.2 0.202-03-04 0.2 0.205-06-07 0.4 0.2 0.608-09-10 1.4 0.4 0.2 2.011-12-13 0.2 0.2 0.2 0.614-15-16 0.2 0.217-18-19 20-21-22 1.0 1.023-24-25 3.2 0.2 3.426-27-28 2.2 0.6 2.829-30-31 0.8 0.2 1.032-33-34 0.2 0.2 0.4
TOTAL 14.6 10.0 2.0 0.4 27.0
M O
D E
L - D
46
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.6 6.6
Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 0.4 05-06-07 0.2 0.2 08-09-10 0.8 0.2 1.0 11-12-13 1.4 0.6 0.2 2.2 14-15-16 0.4 0.4 17-18-19 20-21-22 0.8 0.8 23-24-25 6.6 0.8 7.4 26-27-28 4.6 1.6 0.2 6.4 29-30-31 0.8 0.8 32-33-34 0.2 0.2
TOTAL 6.6 16.2 3.4 0.4 26.6
M O
D E
L - D
47
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 2.4 2.4
Variable 35-36-01 1.0 1.002-03-04 0.2 0.205-06-07 0.8 0.808-09-10 0.2 0.4 0.2 0.811-12-13 0.4 0.4 0.2 0.4 1.414-15-16 0.8 0.6 0.4 1.817-18-19 0.6 0.620-21-22 0.4 0.423-24-25 1.2 0.6 1.826-27-28 1.8 4.0 0.6 6.429-30-31 2.2 3.8 0.4 0.2 6.632-33-34 1.4 1.4 0.2 3.0
TOTAL 2.4 10.8 11.4 2.0 0.6 27.2
M O
D E
L - D
48
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 0.6 0.6
Variable 35-36-01 0.2 0.202-03-04 0.2 0.2 0.405-06-07 0.2 0.2 0.408-09-10 0.2 0.2 0.2 0.611-12-13 0.8 0.4 0.2 0.2 1.614-15-16 0.4 0.6 1.017-18-19 0.2 0.2 0.420-21-22 0.2 0.2 0.423-24-25 0.6 0.6 1.226-27-28 1.0 3.4 0.8 0.4 5.629-30-31 2.2 6.2 1.6 0.4 10.432-33-34 1.2 2.4 0.6 4.2
TOTAL 0.6 7.2 14.2 3.6 1.4 27.0
M O
D E
L - D
49
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 1.2 1.2
Variable 35-36-01 0.4 0.2 0.602-03-04 1.0 0.2 0.2 1.405-06-07 0.2 0.208-09-10 0.2 0.8 0.4 1.411-12-13 0.4 0.2 0.2 0.2 1.014-15-16 0.2 0.217-18-19 20-21-22 0.2 0.223-24-25 0.4 0.2 0.2 0.826-27-28 2.2 3.0 0.4 5.629-30-31 2.6 5.8 0.8 9.232-33-34 1.6 3.2 0.2 5.0
TOTAL 1.2 9.4 13.6 2.2 0.4 26.8
M O
D E
L - D
50
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 11.2 11.2
Variable 35-36-01 0.6 0.2 0.802-03-04 0.8 0.2 1.005-06-07 0.6 0.2 0.808-09-10 1.0 0.4 1.411-12-13 0.6 0.2 0.2 1.014-15-16 17-18-19 0.2 0.220-21-22 23-24-25 1.2 1.226-27-28 2.4 0.8 3.229-30-31 4.0 0.2 4.232-33-34 1.6 0.2 0.2 2.0
TOTAL 11.2 13.0 2.4 0.2 0.2 27.0
M O
D E
L - D
51
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 14.0 14.0
Variable 35-36-01 0.2 0.202-03-04 1.2 0.2 1.405-06-07 1.2 1.208-09-10 1.0 0.8 1.811-12-13 0.6 0.4 0.2 1.214-15-16 0.2 0.217-18-19 0.2 0.220-21-22 23-24-25 0.6 0.626-27-28 1.2 0.6 1.829-30-31 2.2 2.232-33-34 1.6 0.8 2.4
TOTAL 14.0 10.2 2.8 0.2 27.2
M O
D E
L - D
52
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 15.4 15.4
Variable 35-36-01 0.4 0.402-03-04 0.2 0.205-06-07 0.6 0.608-09-10 0.8 1.0 0.2 0.2 2.211-12-13 0.6 0.2 0.814-15-16 0.2 0.217-18-19 0.2 0.220-21-22 0.2 0.223-24-25 1.8 1.826-27-28 1.6 0.6 2.229-30-31 1.4 0.6 2.032-33-34 0.8 0.8
TOTAL 15.4 8.8 2.2 0.4 0.2 27.0
M O
D E
L - D
53
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 13.4 13.4
Variable 35-36-01 0.2 0.202-03-04 0.2 0.205-06-07 0.6 0.2 0.2 1.008-09-10 0.6 1.4 0.2 2.211-12-13 0.6 0.2 0.814-15-16 0.4 0.2 0.617-18-19 0.2 0.220-21-22 0.4 0.423-24-25 3.2 0.2 3.426-27-28 4.0 0.4 4.429-30-31 1.2 0.2 1.432-33-34 0.4 0.4
TOTAL 13.4 12.0 2.8 0.4 28.6
M O
D E
L - D
54
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 4.8 4.8
Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 0.2 0.2 0.4 08-09-10 0.6 1.0 0.2 1.8 11-12-13 1.0 1.4 2.4 14-15-16 17-18-19 1.2 1.2 20-21-22 0.4 0.4 23-24-25 5.4 1.6 7.0 26-27-28 5.6 3.0 8.6 29-30-31 1.0 1.0 2.0 32-33-34 0.2 0.2
TOTAL 4.8 15.6 8.2 0.4 29.0
M O
D E
L - D
55
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 1.4 1.4
Variable 35-36-01 0.2 0.2 0.402-03-04 0.2 0.2 0.405-06-07 0.2 0.208-09-10 0.4 0.8 0.2 1.411-12-13 1.0 1.2 0.2 0.2 2.614-15-16 0.6 0.8 0.2 1.617-18-19 0.2 0.2 0.420-21-22 0.6 0.4 1.023-24-25 0.8 1.6 2.426-27-28 1.8 3.8 0.2 5.829-30-31 2.2 4.6 1.6 8.432-33-34 0.8 1.4 0.2 2.4
TOTAL 1.4 8.6 15.4 2.8 0.2 28.4
M O
D E
L - D
56
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 0.2 0.2
Variable 35-36-01 0.4 0.402-03-04 0.2 0.205-06-07 0.2 0.208-09-10 0.2 0.4 0.611-12-13 0.4 0.8 0.4 1.614-15-16 0.2 0.2 0.417-18-19 0.4 0.4 0.820-21-22 1.4 0.6 2.023-24-25 0.2 0.8 1.026-27-28 2.0 4.2 1.0 7.229-30-31 1.4 5.0 2.6 0.6 9.632-33-34 1.2 2.0 1.0 0.2 4.4
TOTAL 0.2 7.6 14.6 5.4 0.8 28.6
M O
D E
L - D
57
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 0.6 0.6
Variable 35-36-01 0.4 0.4 0.802-03-04 0.8 0.2 1.005-06-07 0.4 0.408-09-10 0.4 1.6 0.2 2.211-12-13 1.4 1.414-15-16 0.2 0.217-18-19 0.2 0.220-21-22 0.2 0.223-24-25 0.2 0.6 0.826-27-28 1.0 3.0 0.8 4.829-30-31 1.4 7.4 1.8 10.632-33-34 1.6 2.6 1.2 5.4
TOTAL 0.6 5.8 18.2 3.8 0.2 28.6
M O
D E
L - D
58
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 9.0 9.0
Variable 35-36-01 1.6 0.2 1.8 02-03-04 0.8 0.8 05-06-07 1.2 1.2 08-09-10 1.6 1.6 0.2 0.2 3.6 11-12-13 0.4 0.2 0.2 0.8 14-15-16 0.6 0.6 17-18-19 20-21-22 23-24-25 0.8 0.8 26-27-28 2.2 0.6 2.8 29-30-31 3.0 1.6 4.6 32-33-34 1.8 1.2 3.0
TOTAL 9.0 14.0 5.4 0.4 0.2 29.0
M O
D E
L - D
59
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 14.0 14.0
Variable 35-36-01 0.4 0.402-03-04 1.2 1.205-06-07 1.6 0.4 2.008-09-10 1.8 1.0 2.811-12-13 0.4 0.4 0.2 1.014-15-16 0.2 0.217-18-19 20-21-22 0.4 0.2 0.623-24-25 1.0 0.2 1.226-27-28 1.0 0.4 1.429-30-31 1.2 1.4 2.632-33-34 1.4 0.2 1.6
TOTAL 14.0 10.6 4.2 0.2 29.0
M O
D E
L - D
60
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 12.4 12.4
Variable 35-36-01 1.0 1.002-03-04 0.2 0.4 0.605-06-07 0.8 0.4 1.208-09-10 1.4 1.2 2.611-12-13 1.0 0.6 1.614-15-16 0.2 0.217-18-19 20-21-22 1.0 1.023-24-25 1.8 1.826-27-28 2.0 0.8 2.829-30-31 1.8 0.6 2.432-33-34 0.8 0.4 1.2
TOTAL 12.4 12.0 4.4 28.8
M O
D E
L - D
61
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 15.0 15.0
Variable 35-36-01 0.2 0.202-03-04 0.2 0.2 0.405-06-07 0.4 0.408-09-10 0.8 1.2 0.2 2.211-12-13 1.6 1.2 2.814-15-16 0.2 0.217-18-19 0.6 0.620-21-22 1.6 0.2 1.823-24-25 2.2 0.4 2.626-27-28 1.6 0.4 2.029-30-31 0.8 0.832-33-34 0.4 0.2 0.6
TOTAL 15.0 9.8 4.2 0.4 0.2 29.6
M O
D E
L - D
62
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 2.8 2.8
Variable 35-36-01 0.2 0.2 02-03-04 0.6 0.2 0.8 05-06-07 0.2 0.2 0.2 0.6 08-09-10 0.4 0.4 0.4 1.2 11-12-13 0.4 0.8 0.8 2.0 14-15-16 0.4 0.6 1.0 17-18-19 0.8 0.2 0.2 1.2 20-21-22 1.2 0.8 2.0 23-24-25 5.4 2.2 7.6 26-27-28 4.8 3.0 7.8 29-30-31 1.4 0.6 2.0 32-33-34 0.8 0.8
TOTAL 2.8 16.6 9.0 1.6 30.0
M O
D E
L - D
63
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26 to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 0.8 0.8
Variable 35-36-01 0.8 0.2 1.002-03-04 0.2 0.205-06-07 0.2 0.2 0.408-09-10 0.4 1.0 0.2 1.611-12-13 0.6 1.2 0.4 2.214-15-16 0.8 0.4 1.217-18-19 0.4 1.0 1.420-21-22 0.2 0.2 0.423-24-25 0.8 1.8 2.626-27-28 0.8 2.8 0.4 4.029-30-31 2.2 5.2 1.4 8.832-33-34 1.4 3.4 0.2 5.0
TOTAL 0.8 8.6 17.4 2.0 0.6 0.2 29.6
M O
D E
L - D
64
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21 to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 0.6 0.6
Variable 35-36-01 0.8 0.2 1.002-03-04 0.8 0.6 1.405-06-07 0.8 0.8 1.608-09-10 0.6 0.611-12-13 0.2 1.2 0.2 1.614-15-16 0.2 0.4 0.617-18-19 0.6 0.2 0.820-21-22 0.6 0.4 0.2 1.223-24-25 0.4 1.2 0.2 1.826-27-28 0.8 3.2 1.6 5.629-30-31 0.4 4.8 2.8 0.2 8.232-33-34 0.8 2.4 1.6 4.8
TOTAL 0.6 5.8 16.4 6.6 0.2 0.2 29.8
M O
D E
L - D
65
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 1.6 1.6
Variable 35-36-01 0.6 0.8 0.4 1.802-03-04 1.0 0.2 1.205-06-07 0.4 0.6 1.008-09-10 1.0 0.8 0.2 2.011-12-13 0.6 0.4 0.2 0.2 1.414-15-16 17-18-19 20-21-22 0.2 0.223-24-25 0.6 0.626-27-28 0.8 2.0 0.6 3.429-30-31 1.0 6.4 2.4 9.832-33-34 1.0 4.6 0.8 6.4
TOTAL 1.6 6.4 16.4 4.8 0.2 29.4
M O
D E
L - D
66
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16 to 20
21 to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 11.4 11.4
Variable 35-36-01 0.4 0.402-03-04 0.6 0.6 1.205-06-07 1.0 0.4 0.2 1.608-09-10 1.8 0.8 2.611-12-13 0.4 0.8 0.4 1.614-15-16 0.4 0.417-18-19 20-21-22 0.6 0.623-24-25 0.8 0.6 1.426-27-28 2.2 1.0 3.229-30-31 2.2 0.4 2.632-33-34 1.6 0.8 0.2 0.2 2.8
TOTAL 11.4 12.0 5.4 0.6 0.2 0.2 29.8
M O
D E
L - D
67
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 14.0 14.0
Variable 35-36-01 0.2 0.202-03-04 0.8 0.805-06-07 0.8 0.4 0.2 1.408-09-10 3.2 0.4 3.611-12-13 1.0 1.0 0.2 2.214-15-16 0.8 0.2 1.017-18-19 0.4 0.420-21-22 0.8 0.823-24-25 1.0 0.8 1.826-27-28 0.8 0.2 1.029-30-31 0.6 0.2 0.832-33-34 1.0 1.0 2.0
TOTAL 14.0 11.2 4.2 0.6 30.0
M O
D E
L - D
68
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 15.4 15.4
Variable 35-36-01 0.6 0.2 0.8 02-03-04 05-06-07 0.8 0.2 1.0 08-09-10 1.4 1.0 2.4 11-12-13 0.6 1.2 0.2 2.0 14-15-16 17-18-19 0.4 0.4 20-21-22 1.0 0.2 0.2 1.4 23-24-25 2.0 0.4 2.4 26-27-28 1.0 0.6 1.6 29-30-31 0.6 1.0 1.6 32-33-34 0.6 0.4 1.0
TOTAL 15.4 9.0 5.0 0.6 30.0
M O
D E
L - D
69
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 5.4 5.4
Variable 35-36-01 0.2 0.202-03-04 0.2 0.205-06-07 1.0 0.6 0.2 1.808-09-10 1.0 3.0 0.6 4.611-12-13 2.2 2.2 0.2 4.614-15-16 0.6 0.4 1.017-18-19 0.8 0.4 1.220-21-22 2.8 0.4 0.2 3.423-24-25 3.4 0.8 0.2 4.426-27-28 1.0 0.6 0.4 2.029-30-31 1.0 0.6 0.2 1.832-33-34 0.2 0.2 0.4
TOTAL 5.4 14.0 9.2 2.0 0.4 31.0
M O
D E
L - D
70
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21 to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 1.4 1.4
Variable 35-36-01 02-03-04 0.2 0.205-06-07 0.8 0.2 0.2 1.208-09-10 0.4 2.0 1.0 0.4 3.811-12-13 1.2 2.6 1.4 5.214-15-16 0.4 0.8 0.4 1.617-18-19 0.8 0.4 1.220-21-22 1.6 0.6 0.2 2.423-24-25 1.2 2.6 1.8 0.4 6.026-27-28 1.0 2.2 1.4 0.2 4.829-30-31 0.8 1.2 0.2 0.2 2.432-33-34 0.2 0.2 0.4
TOTAL 1.4 8.4 12.6 6.8 1.2 0.2 30.6
M O
D E
L - D
71
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21 to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 0.6 0.6
Variable 35-36-01 0.2 0.2 0.402-03-04 0.6 0.2 0.805-06-07 0.6 0.6 1.208-09-10 1.0 1.6 1.6 4.211-12-13 0.6 1.6 0.4 2.614-15-16 0.2 1.6 0.2 2.017-18-19 0.4 0.2 0.620-21-22 0.6 0.6 0.2 1.423-24-25 0.6 1.6 1.2 3.426-27-28 0.8 1.4 2.4 1.0 0.2 5.829-30-31 1.4 1.8 2.0 0.2 5.432-33-34 0.6 1.0 0.8 2.4
TOTAL 0.6 7.6 12.0 9.2 1.2 0.2 30.8
M O
D E
L - D
72
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 0.6 0.6
Variable 35-36-01 0.4 0.6 1.002-03-04 0.4 0.4 0.805-06-07 0.6 1.4 0.2 2.208-09-10 0.6 2.6 0.4 3.611-12-13 0.4 0.6 1.014-15-16 0.4 0.6 1.017-18-19 0.2 0.2 0.2 0.620-21-22 0.6 0.2 0.2 1.023-24-25 0.8 1.2 1.0 0.2 3.226-27-28 0.8 2.8 1.8 5.429-30-31 0.6 2.2 2.8 0.4 6.032-33-34 0.8 2.2 1.6 4.6
TOTAL 0.6 6.6 15.0 8.0 0.8 31.0
M O
D E
L - D
73
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 1.8 1.8
Variable 35-36-01 0.4 0.402-03-04 1.4 0.8 0.2 2.405-06-07 1.6 1.0 0.6 3.208-09-10 0.2 1.4 1.0 2.611-12-13 0.4 0.2 0.614-15-16 0.2 0.2 0.417-18-19 0.4 0.2 0.2 0.820-21-22 0.6 0.2 0.823-24-25 0.8 1.8 0.8 3.426-27-28 0.8 1.2 2.0 0.2 4.229-30-31 0.6 3.4 3.2 7.232-33-34 0.6 1.2 1.2 3.0
TOTAL 1.8 7.6 11.8 9.4 0.2 30.8
M O
D E
L - D
74
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36 to 40
41to 45
46 to 50
>50
TOTAL
Calm 5.6 5.6
Variable 35-36-01 0.4 0.2 0.602-03-04 0.4 0.405-06-07 2.2 0.6 0.6 0.2 3.608-09-10 1.2 2.4 1.0 0.2 4.811-12-13 1.0 1.0 2.014-15-16 0.4 0.417-18-19 0.4 0.2 0.620-21-22 0.8 0.4 1.223-24-25 1.8 1.0 0.4 3.226-27-28 1.4 2.0 0.2 3.629-30-31 1.8 0.8 0.4 3.032-33-34 1.8 0.2 2.0
TOTAL 5.6 12.8 9.2 2.8 0.4 0.2 31.0
M O
D E
L - D
75
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.2 6.2
Variable 35-36-01 0.4 0.2 0.602-03-04 0.2 0.4 0.605-06-07 0.6 0.2 0.2 1.008-09-10 1.4 3.8 1.4 0.2 6.811-12-13 1.2 1.8 0.2 3.214-15-16 0.8 0.2 0.2 1.217-18-19 0.4 0.420-21-22 2.0 0.6 2.623-24-25 2.0 1.0 0.2 3.226-27-28 1.6 0.4 0.2 0.2 2.429-30-31 0.6 0.2 0.2 1.032-33-34 0.8 0.8 1.6
TOTAL 6.2 12.0 9.6 2.4 0.6 30.8
M O
D E
L - D
76
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 5.4 5.4
Variable 35-36-01 0.2 0.2 0.402-03-04 1.2 0.2 1.405-06-07 0.4 0.8 1.208-09-10 1.8 1.6 1.0 4.411-12-13 1.4 2.6 0.8 0.2 5.014-15-16 1.0 0.6 1.617-18-19 0.6 0.4 1.020-21-22 1.4 0.2 0.2 1.823-24-25 3.8 0.6 4.426-27-28 0.4 1.4 0.2 2.029-30-31 1.0 0.4 1.432-33-34 0.2 0.6 0.2 1.0
TOTAL 5.4 13.4 9.6 2.4 0.2 31.0
M O
D E
L - D
77
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.0 6.0
Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.2 0.2 05-06-07 1.2 0.2 0.2 1.6 08-09-10 1.4 2.2 0.4 4.0 11-12-13 1.4 2.8 0.2 4.4 14-15-16 1.4 1.2 2.6 17-18-19 0.2 0.2 20-21-22 1.0 0.2 0.2 1.4 23-24-25 2.8 0.4 3.2 26-27-28 1.6 1.0 2.6 29-30-31 0.8 0.2 0.2 1.2 32-33-34 0.4 0.2 0.6
TOTAL 6.0 12.6 8.6 1.2 28.4
M O
D E
L - D
78
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 2.2 2.2
Variable 35-36-01 0.2 0.202-03-04 0.8 0.6 1.405-06-07 0.2 0.2 0.2 0.2 0.808-09-10 1.4 1.8 0.4 3.611-12-13 0.6 3.4 1.0 5.014-15-16 0.6 1.2 0.4 2.217-18-19 0.6 1.0 1.620-21-22 0.2 0.223-24-25 1.6 0.8 2.426-27-28 0.4 3.4 0.8 4.629-30-31 1.0 1.6 0.2 0.2 3.032-33-34 0.4 0.6 0.2 1.2
TOTAL 2.2 8.0 14.6 3.2 0.4 28.4
M O
D E
L - D
79
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 1.2 1.2
Variable 35-36-01 0.6 0.6 0.2 1.402-03-04 0.6 1.2 0.2 2.005-06-07 1.4 0.2 0.2 1.808-09-10 1.2 1.0 0.4 2.611-12-13 1.0 1.6 0.8 3.414-15-16 0.4 0.8 1.217-18-19 1.0 0.4 1.420-21-22 0.2 0.223-24-25 0.4 0.2 0.2 0.826-27-28 0.4 1.8 0.4 2.629-30-31 1.0 3.4 1.0 0.2 5.632-33-34 1.8 1.8 0.2 3.8
TOTAL 1.2 10.0 13.0 3.6 0.2 28.0
M O
D E
L - D
80
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 1.4 1.4
Variable 35-36-01 1.0 0.6 1.602-03-04 0.6 0.6 0.2 1.405-06-07 1.2 1.0 0.4 2.608-09-10 0.6 2.8 0.4 3.811-12-13 1.0 1.6 0.4 3.014-15-16 0.6 0.8 1.417-18-19 0.4 0.420-21-22 0.2 0.223-24-25 0.8 0.826-27-28 0.4 0.8 0.2 1.429-30-31 0.4 3.8 1.6 0.4 6.232-33-34 1.4 2.2 0.2 3.8
TOTAL 1.4 7.6 15.2 3.4 0.4 28.0
M O
D E
L - D
81
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 2.0 2.0
Variable 35-36-01 1.2 0.4 1.602-03-04 1.0 0.8 0.2 2.005-06-07 2.2 0.4 0.2 0.2 3.008-09-10 1.2 2.6 3.811-12-13 1.0 2.0 0.4 3.414-15-16 0.6 0.8 1.417-18-19 0.4 0.4 0.4 1.220-21-22 0.4 0.2 0.623-24-25 0.6 0.2 0.2 1.026-27-28 0.4 1.2 1.629-30-31 0.6 2.6 1.4 4.632-33-34 0.6 1.6 0.2 2.4
TOTAL 2.0 10.2 13.2 2.8 0.4 28.6
M O
D E
L - D
82
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21 to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 5.6 5.6
Variable 35-36-01 0.2 0.202-03-04 0.4 0.2 0.605-06-07 2.6 0.2 2.808-09-10 1.6 2.6 0.2 4.411-12-13 2.2 2.4 0.6 5.214-15-16 0.8 0.6 0.4 1.817-18-19 0.4 0.2 0.620-21-22 0.6 0.2 0.823-24-25 0.4 0.6 1.026-27-28 0.4 0.2 0.2 0.829-30-31 2.4 0.6 3.032-33-34 1.0 0.2 1.2
TOTAL 5.6 12.6 8.2 1.4 0.2 28.0
M O
D E
L - D
83
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.4 6.4
Variable 35-36-01 0.4 0.4 02-03-04 0.2 0.2 05-06-07 0.8 0.4 1.2 08-09-10 1.6 3.2 0.2 5.0 11-12-13 2.0 1.8 0.2 4.0 14-15-16 2.2 1.4 1.0 4.6 17-18-19 0.4 0.2 0.6 20-21-22 0.4 0.2 0.6 23-24-25 0.8 0.4 1.2 26-27-28 1.2 0.6 1.8 29-30-31 1.6 1.6 32-33-34 1.0 1.0
TOTAL 6.4 12.6 8.0 1.6 28.6
M O
D E
L - D
84
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21 to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.4 6.4
Variable 35-36-01 02-03-04 0.4 0.2 0.605-06-07 0.2 0.208-09-10 2.8 1.6 0.2 4.611-12-13 2.0 1.6 1.6 5.214-15-16 1.2 1.2 0.4 2.817-18-19 1.0 0.8 1.820-21-22 1.6 1.623-24-25 1.6 0.2 1.826-27-28 1.2 0.4 0.2 1.829-30-31 0.4 0.2 0.4 1.032-33-34 0.4 0.4
TOTAL 6.4 12.8 6.0 2.8 0.2 28.2
M O
D E
L - D
85
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.6 6.6
Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 0.6 0.6 08-09-10 3.0 1.8 0.4 5.2 11-12-13 1.6 1.0 0.4 3.0 14-15-16 1.6 0.6 2.2 17-18-19 1.0 0.2 0.2 1.4 20-21-22 1.6 0.2 1.8 23-24-25 2.8 0.4 3.2 26-27-28 2.2 3.6 0.4 6.2 29-30-31 0.4 0.2 0.6 32-33-34
TOTAL 6.6 15.0 8.0 1.4 31.0
M O
D E
L - D
86
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 2.6 2.6
Variable 35-36-01 0.2 0.202-03-04 0.2 0.2 0.405-06-07 1.0 0.8 1.808-09-10 0.8 2.0 2.811-12-13 1.4 1.8 1.4 4.614-15-16 0.4 1.0 0.4 1.817-18-19 0.4 0.4 0.820-21-22 0.2 0.4 0.623-24-25 1.2 2.2 3.426-27-28 1.0 3.2 3.6 0.6 8.429-30-31 1.6 0.6 0.6 0.2 3.032-33-34 0.2 0.2 0.2 0.6
TOTAL 2.6 8.4 13.0 6.2 0.8 31.0
M O
D E
L - D
87
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 0.8 0.8
Variable 35-36-01 0.2 0.4 0.602-03-04 0.6 0.4 1.005-06-07 0.4 0.2 0.608-09-10 1.6 1.6 0.6 3.811-12-13 1.0 1.2 1.2 3.414-15-16 0.2 1.6 0.2 0.2 2.217-18-19 0.4 0.2 0.620-21-22 1.0 0.2 1.223-24-25 0.6 1.2 0.4 2.226-27-28 1.0 5.2 1.6 0.2 8.029-30-31 1.6 1.6 1.8 0.2 5.232-33-34 0.2 0.6 0.2 1.0
TOTAL 0.8 8.8 14.4 6.0 0.6 30.6
M O
D E
L - D
88
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 1.4 1.4
Variable 35-36-01 0.2 0.2 0.402-03-04 0.4 0.2 0.605-06-07 0.8 0.8 1.608-09-10 1.2 2.2 0.4 0.2 4.011-12-13 1.2 2.4 0.8 4.414-15-16 0.6 0.6 0.2 1.417-18-19 0.8 0.4 1.220-21-22 1.2 0.4 1.623-24-25 0.8 1.0 0.4 2.226-27-28 0.8 1.8 0.8 3.429-30-31 1.0 3.6 1.4 6.032-33-34 0.4 1.4 0.2 2.0
TOTAL 1.4 9.4 15.0 4.2 0.2 30.2
M O
D E
L - D
89
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26 to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 1.2 1.2
Variable 35-36-01 0.2 0.2 0.402-03-04 1.2 0.8 2.005-06-07 0.8 0.4 1.208-09-10 2.0 2.4 0.4 4.811-12-13 1.0 1.8 0.4 0.2 3.414-15-16 1.0 1.0 2.017-18-19 1.2 0.2 1.420-21-22 0.8 0.6 1.423-24-25 1.2 1.0 0.2 2.426-27-28 1.2 2.2 0.6 4.029-30-31 1.6 1.2 1.4 4.232-33-34 0.6 0.8 0.8 2.2
TOTAL 1.2 12.8 12.6 3.8 0.2 30.6
M O
D E
L - D
90
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 4.8 4.8
Variable 35-36-01 0.2 0.2 0.4 02-03-04 0.4 0.2 0.6 05-06-07 0.8 0.6 1.4 08-09-10 3.2 1.8 0.8 5.8 11-12-13 2.2 1.4 0.4 4.0 14-15-16 2.6 0.8 3.4 17-18-19 0.8 0.4 1.2 20-21-22 1.8 1.8 23-24-25 1.4 0.6 2.0 26-27-28 0.8 0.8 1.6 29-30-31 1.4 1.2 2.6 32-33-34 0.4 0.4 0.2 1.0
TOTAL 4.8 16.0 8.4 1.4 30.6
M O
D E
L - D
91
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.6 6.6
Variable 35-36-01 02-03-04 0.4 0.4 05-06-07 2.0 0.4 2.4 08-09-10 3.8 1.4 5.2 11-12-13 1.4 0.8 0.6 2.8 14-15-16 2.0 1.2 3.2 17-18-19 1.6 0.8 2.4 20-21-22 1.8 0.6 2.4 23-24-25 2.0 0.6 2.6 26-27-28 1.2 0.6 1.8 29-30-31 0.6 0.2 0.8 32-33-34 0.2 0.2 0.4
TOTAL 6.6 17.0 6.6 0.8 31.0
M O
D E
L - D
92
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.8 6.8
Variable 35-36-01 02-03-04 05-06-07 0.6 0.6 08-09-10 2.4 2.4 0.2 5.0 11-12-13 2.0 1.6 3.6 14-15-16 1.8 0.8 0.2 2.8 17-18-19 0.4 0.4 0.8 20-21-22 2.0 0.4 2.4 23-24-25 4.0 2.4 6.4 26-27-28 1.2 0.6 1.8 29-30-31 0.2 0.2 32-33-34 0.2 0.2
TOTAL 6.8 14.8 8.6 0.4 30.6
M O
D E
L - D
93
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 4.2 4.2
Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 0.4 0.6 1.0 08-09-10 3.8 1.0 4.8 11-12-13 1.8 1.0 2.8 14-15-16 0.8 0.8 17-18-19 0.6 0.6 20-21-22 0.4 0.2 0.6 23-24-25 3.2 1.0 4.2 26-27-28 3.6 0.6 0.4 4.6 29-30-31 1.4 0.4 1.8 32-33-34
TOTAL 4.2 16.2 4.8 0.4 25.6
M O
D E
L - D
94
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 1.6 1.6
Variable 35-36-01 02-03-04 0.6 0.605-06-07 0.6 0.2 0.808-09-10 3.4 1.6 5.011-12-13 1.8 1.0 2.814-15-16 0.6 0.6 1.217-18-19 0.6 0.2 0.820-21-22 0.6 0.623-24-25 0.4 2.2 0.4 3.026-27-28 0.4 3.2 1.8 0.2 5.629-30-31 2.4 0.8 3.232-33-34 0.2 0.2 0.2 0.6
TOTAL 1.6 9.2 11.6 3.2 0.2 25.8
M O
D E
L - D
95
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 1.2 1.2
Variable 35-36-01 0.4 0.2 0.6 02-03-04 0.2 0.2 05-06-07 1.0 1.0 08-09-10 0.8 1.8 0.2 2.8 11-12-13 1.6 2.6 4.2 14-15-16 0.6 0.6 17-18-19 0.2 0.8 1.0 20-21-22 0.4 0.2 0.6 23-24-25 1.2 0.6 1.8 26-27-28 0.8 2.6 1.6 5.0 29-30-31 0.8 2.2 1.2 4.2 32-33-34 0.6 1.0 0.8 2.4
TOTAL 1.2 8.0 12.6 3.8 25.6
M O
D E
L - D
96
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 0.8 0.8
Variable 35-36-01 0.6 0.6 1.202-03-04 0.6 0.2 0.805-06-07 0.6 0.8 0.2 0.2 1.808-09-10 1.0 2.8 0.4 4.211-12-13 0.6 2.0 2.614-15-16 1.0 0.8 1.817-18-19 0.2 0.4 0.620-21-22 0.4 0.423-24-25 0.2 1.0 0.2 1.426-27-28 1.0 2.8 0.4 4.229-30-31 1.6 1.8 0.6 4.032-33-34 0.2 1.8 0.2 2.2
TOTAL 0.8 8.0 15.0 2.0 0.2 26.0
M O
D E
L - D
97
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 2.4 2.4
Variable 35-36-01 0.2 0.8 1.002-03-04 0.2 0.8 1.005-06-07 1.0 0.8 1.808-09-10 2.0 2.8 0.4 0.2 5.411-12-13 1.0 1.2 2.214-15-16 0.2 0.4 0.617-18-19 0.4 0.2 0.620-21-22 0.6 0.4 1.023-24-25 0.4 0.4 0.826-27-28 0.6 1.8 0.2 2.629-30-31 1.4 3.0 0.4 4.832-33-34 0.6 0.8 0.2 1.6
TOTAL 2.4 8.6 13.4 1.2 0.2 25.8
M O
D E
L - D
98
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26 to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 3.8 3.8
Variable 35-36-01 0.8 0.802-03-04 0.4 0.2 0.605-06-07 1.4 0.4 1.808-09-10 4.4 0.8 0.2 0.2 5.611-12-13 2.6 0.8 0.4 3.814-15-16 1.6 0.4 2.017-18-19 0.8 0.2 1.020-21-22 0.4 0.2 0.623-24-25 2.2 0.2 2.426-27-28 0.8 0.6 1.429-30-31 0.8 0.4 1.232-33-34 0.8 0.2 1.0
TOTAL 3.8 17.0 4.4 0.6 0.2 26.0
M O
D E
L - D
99
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 5.6 5.6
Variable 35-36-01 02-03-04 0.2 0.205-06-07 0.4 0.6 1.008-09-10 3.6 1.6 5.211-12-13 3.2 1.2 4.414-15-16 1.6 1.617-18-19 0.8 0.820-21-22 1.8 0.2 2.023-24-25 1.6 0.8 0.2 2.626-27-28 0.6 0.6 1.229-30-31 1.0 1.032-33-34 0.2 0.2
TOTAL 5.6 14.8 4.8 0.4 0.2 25.8
M O
D E
L - D
100
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 5.0 5.0
Variable 35-36-01 02-03-04 0.6 0.6 05-06-07 0.8 0.4 0.2 1.4 08-09-10 3.2 1.2 4.4 11-12-13 2.0 1.6 3.6 14-15-16 0.4 0.2 0.6 17-18-19 0.4 0.4 20-21-22 1.6 0.2 1.8 23-24-25 2.4 0.8 3.2 26-27-28 2.2 1.4 0.2 3.8 29-30-31 0.6 0.2 0.8 32-33-34
TOTAL 5.0 14.2 6.0 0.4 25.6
M O
D E
L - D
101
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 13.0 13.0
Variable 35-36-01 0.2 0.202-03-04 0.6 0.2 0.805-06-07 2.2 2.208-09-10 3.6 0.8 4.411-12-13 1.6 0.6 2.214-15-16 0.4 0.417-18-19 0.6 0.620-21-22 0.2 0.223-24-25 2.0 2.026-27-28 2.0 0.6 2.629-30-31 0.6 0.2 0.832-33-34 0.4 0.4
TOTAL 13.0 14.4 2.4 29.8
M O
D E
L - D
102
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 3.6 3.6
Variable 35-36-01 0.6 0.4 1.0 02-03-04 0.2 0.2 05-06-07 1.0 0.2 1.2 08-09-10 3.0 2.0 5.0 11-12-13 2.8 1.0 3.8 14-15-16 0.4 0.2 0.6 17-18-19 0.8 0.8 20-21-22 0.8 0.2 1.0 23-24-25 1.2 0.8 0.2 2.2 26-27-28 3.6 3.6 0.6 7.8 29-30-31 1.2 0.4 1.6 32-33-34 0.6 0.2 0.8
TOTAL 3.6 16.2 9.0 0.8 29.6
M O
D E
L - D
103
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 2.2 2.2
Variable 35-36-01 0.6 0.4 1.002-03-04 1.2 0.2 1.405-06-07 1.6 0.4 2.008-09-10 1.0 2.2 0.2 3.411-12-13 1.6 1.0 2.614-15-16 1.2 0.6 1.817-18-19 0.6 0.620-21-22 0.2 0.4 0.623-24-25 1.0 0.4 1.426-27-28 1.6 3.0 0.8 5.429-30-31 1.0 3.2 1.0 5.232-33-34 0.6 1.4 2.0
TOTAL 2.2 12.2 13.2 2.0 29.6
M O
D E
L - D
104
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 2.0 2.0
Variable 35-36-01 0.6 0.8 0.4 0.2 2.002-03-04 0.8 1.0 0.2 2.005-06-07 1.6 0.8 2.408-09-10 1.8 2.0 0.2 0.2 0.2 4.411-12-13 0.2 1.2 0.4 1.814-15-16 0.6 0.4 1.017-18-19 0.2 0.220-21-22 0.4 0.423-24-25 0.2 0.2 0.426-27-28 0.6 2.0 0.4 3.029-30-31 1.4 3.0 1.2 5.632-33-34 1.2 3.0 0.4 4.6
TOTAL 2.0 9.6 14.4 3.2 0.4 0.2 29.8
M O
D E
L - D
105
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 2.8 2.8
Variable 35-36-01 2.0 2.0 0.2 4.202-03-04 1.8 1.0 0.2 3.005-06-07 0.8 1.2 2.008-09-10 3.0 1.0 0.2 4.211-12-13 1.4 0.8 2.214-15-16 0.6 0.617-18-19 0.4 0.420-21-22 23-24-25 0.6 0.2 0.826-27-28 0.8 0.4 1.229-30-31 1.2 2.2 0.6 4.032-33-34 1.6 2.8 4.4
TOTAL 2.8 14.2 11.4 1.4 29.8
M O
D E
L - D
106
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 11.0 11.0
Variable 35-36-01 2.8 0.4 3.202-03-04 2.0 0.2 2.205-06-07 2.8 0.2 3.008-09-10 2.8 1.0 0.4 4.211-12-13 1.4 1.414-15-16 1.6 0.2 1.817-18-19 0.4 0.420-21-22 0.2 0.223-24-25 26-27-28 0.2 0.2 0.429-30-31 0.2 0.232-33-34 1.0 0.4 1.4
TOTAL 11.0 15.4 2.6 0.4 29.4
M O
D E
L - D
107
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 13.2 13.2
Variable 35-36-01 0.4 0.2 0.602-03-04 0.4 0.405-06-07 1.8 1.808-09-10 3.6 1.0 4.611-12-13 1.6 0.8 2.414-15-16 1.8 1.817-18-19 0.8 0.820-21-22 0.6 0.623-24-25 0.8 0.2 1.026-27-28 0.8 0.2 1.029-30-31 0.6 0.2 0.832-33-34 0.4 0.2 0.6
TOTAL 13.2 13.6 2.8 29.6
M O
D E
L - D
108
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 13.0 13.0
Variable 35-36-01 0.2 0.202-03-04 0.4 0.405-06-07 1.0 0.2 1.208-09-10 4.2 0.8 5.011-12-13 3.0 0.4 3.414-15-16 0.6 0.2 0.817-18-19 1.0 1.020-21-22 0.6 0.623-24-25 2.2 2.226-27-28 0.4 0.2 0.629-30-31 0.6 0.2 0.832-33-34 0.6 0.6
TOTAL 13.0 14.6 2.2 29.8
M O
D E
L - D
109
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 22.2 22.2
Variable 35-36-01 02-03-04 05-06-07 08-09-10 2.6 0.6 3.2 11-12-13 1.8 0.4 2.2 14-15-16 0.6 0.6 17-18-19 0.2 0.2 20-21-22 0.4 0.4 23-24-25 1.6 1.6 26-27-28 0.2 0.2 29-30-31 32-33-34 0.2 0.2 0.4
TOTAL 22.2 7.6 1.2 31.0
M O
D E
L - D
110
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 10.0 10.0
Variable 35-36-01 02-03-04 05-06-07 0.8 0.2 1.008-09-10 2.2 1.2 3.411-12-13 1.2 0.4 1.614-15-16 2.0 0.6 2.617-18-19 0.6 0.2 0.820-21-22 1.2 1.223-24-25 6.2 6.226-27-28 2.6 0.8 3.429-30-31 0.2 0.232-33-34 0.6 0.6
TOTAL 10.0 17.6 3.4 31.0
M O
D E
L - D
111
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 4.2 4.2
Variable 35-36-01 0.2 0.2 02-03-04 0.4 0.2 0.6 05-06-07 0.6 0.6 08-09-10 1.2 2.0 0.2 3.4 11-12-13 1.2 0.6 1.8 14-15-16 1.8 0.6 2.4 17-18-19 1.6 0.2 1.8 20-21-22 1.4 1.4 23-24-25 1.8 1.2 3.0 26-27-28 3.6 1.0 4.6 29-30-31 1.8 1.6 0.2 3.6 32-33-34 2.4 0.8 0.2 3.4
TOTAL 4.2 18.0 8.2 0.6 31.0
M O
D E
L - D
112
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 3.2 3.2
Variable 35-36-01 3.0 0.8 0.2 4.002-03-04 0.6 0.6 1.205-06-07 1.6 1.0 2.608-09-10 0.8 1.0 0.4 2.211-12-13 1.2 0.4 1.614-15-16 0.2 0.2 0.417-18-19 0.2 0.220-21-22 0.4 0.423-24-25 0.4 0.2 0.2 0.826-27-28 1.4 1.2 2.629-30-31 3.0 3.0 0.4 6.432-33-34 2.4 2.6 0.4 5.4
TOTAL 3.2 15.2 11.0 1.6 31.0
M O
D E
L - D
113
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.6 6.6
Variable 35-36-01 1.4 0.2 1.6 02-03-04 3.2 0.2 3.4 05-06-07 3.6 0.2 3.8 08-09-10 2.2 0.6 0.4 3.2 11-12-13 1.4 0.2 1.6 14-15-16 17-18-19 0.2 0.2 20-21-22 23-24-25 0.2 0.2 26-27-28 0.2 0.2 29-30-31 3.4 1.4 4.8 32-33-34 3.4 1.8 5.2
TOTAL 6.6 19.2 4.6 0.4 30.8
M O
D E
L - D
114
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 17.2 17.2
Variable 35-36-01 0.6 0.2 0.802-03-04 0.8 0.805-06-07 2.8 0.2 0.2 3.208-09-10 4.0 0.8 4.811-12-13 1.4 0.4 1.814-15-16 0.8 0.817-18-19 20-21-22 0.2 0.223-24-25 26-27-28 0.6 0.629-30-31 0.4 0.432-33-34 0.4 0.4
TOTAL 17.2 12.0 1.6 0.2 31.0
M O
D E
L - D
115
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 18.8 18.8
Variable 35-36-01 02-03-04 0.2 0.205-06-07 1.4 0.2 1.608-09-10 4.6 0.6 0.2 5.411-12-13 2.6 0.2 2.814-15-16 0.8 0.817-18-19 0.6 0.620-21-22 23-24-25 0.2 0.226-27-28 0.2 0.229-30-31 0.2 0.232-33-34 0.2 0.2
TOTAL 18.8 11.0 1.0 0.2 31.0
M O
D E
L - D
116
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 20.4 20.4
Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 1.0 1.0 08-09-10 2.4 0.4 2.8 11-12-13 3.8 0.2 4.0 14-15-16 0.6 0.6 17-18-19 0.2 0.2 0.4 20-21-22 0.2 0.2 23-24-25 0.8 0.8 26-27-28 29-30-31 0.2 0.2 32-33-34
TOTAL 20.4 9.4 0.8 30.6
M O
D E
L - D
117
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 22.8 22.8
Variable 35-36-01 02-03-04 05-06-07 0.4 0.4 08-09-10 1.0 1.0 11-12-13 0.6 0.2 0.8 14-15-16 0.2 0.2 17-18-19 20-21-22 1.2 1.2 23-24-25 2.2 2.2 26-27-28 1.0 1.0 29-30-31 0.2 0.2 32-33-34
TOTAL 22.8 6.8 0.2 29.8
M O
D E
L - D
118
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26 to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 10.2 10.2
Variable 35-36-01 02-03-04 05-06-07 0.6 0.608-09-10 1.2 0.2 1.411-12-13 0.8 0.814-15-16 0.6 0.617-18-19 0.2 0.220-21-22 0.4 0.423-24-25 9.0 0.2 0.2 9.426-27-28 4.4 1.0 5.429-30-31 0.8 0.2 1.032-33-34
TOTAL 10.2 18.0 1.6 0.2 30.0
M O
D E
L - D
119
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 234meters above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36 to 40
41to 45
46to 50
>50
TOTAL
Calm 4.4 4.4
Variable 35-36-01 0.4 0.2 0.602-03-04 0.2 0.205-06-07 1.0 0.2 1.208-09-10 0.4 0.2 0.611-12-13 0.6 0.4 1.014-15-16 1.0 0.2 1.217-18-19 1.4 0.2 1.620-21-22 0.4 0.423-24-25 1.4 0.6 2.026-27-28 3.8 2.6 0.2 0.2 6.829-30-31 3.0 2.4 0.4 5.832-33-34 3.0 1.0 0.2 4.2
TOTAL 4.4 16.6 8.0 0.8 0.2 30.0
M O
D E
L - D
120
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 2.2 2.2
Variable 35-36-01 2.0 1.2 3.202-03-04 0.8 0.2 1.005-06-07 1.2 0.2 1.408-09-10 0.4 0.6 1.011-12-13 0.2 0.214-15-16 0.2 0.217-18-19 0.2 0.220-21-22 0.2 0.223-24-25 26-27-28 0.6 2.2 0.4 3.229-30-31 2.0 5.0 2.2 0.2 9.432-33-34 2.6 5.2 7.8
TOTAL 2.2 10.2 14.8 2.6 0.2 30.0
M O
D E
L - D
121
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 6.6 6.6
Variable 35-36-01 1.2 1.2 02-03-04 1.8 1.8 05-06-07 2.2 0.2 2.4 08-09-10 0.8 0.2 1.0 11-12-13 0.2 0.2 14-15-16 17-18-19 20-21-22 23-24-25 0.2 0.2 26-27-28 2.4 1.0 3.4 29-30-31 7.0 1.2 8.2 32-33-34 4.2 0.8 5.0
TOTAL 6.6 20.0 3.4 30.0
M O
D E
L - D
122
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 21.0 21.0
Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 1.2 1.2 08-09-10 1.8 0.4 0.2 2.4 11-12-13 0.6 0.6 14-15-16 0.2 0.2 0.4 17-18-19 20-21-22 0.4 0.4 23-24-25 0.4 0.4 26-27-28 1.6 0.2 1.8 29-30-31 0.8 0.8 32-33-34 0.2 0.2
TOTAL 21.0 7.4 1.0 0.2 29.6
M O
D E
L - D
123
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 23.2 23.2
Variable 35-36-01 02-03-04 0.2 0.2 05-06-07 0.2 0.2 08-09-10 2.6 2.6 11-12-13 0.8 0.4 1.2 14-15-16 17-18-19 0.2 0.2 20-21-22 23-24-25 0.2 0.2 26-27-28 1.2 1.2 29-30-31 0.4 0.2 0.6 32-33-34 0.2 0.2
TOTAL 23.2 5.8 0.8 29.8
M O
D E
L - D
124
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : NovemberLongitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 22.2 22.2
Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 0.6 0.6 08-09-10 1.4 0.2 1.6 11-12-13 1.2 1.2 14-15-16 0.4 0.4 17-18-19 20-21-22 0.8 0.8 23-24-25 1.6 1.6 26-27-28 0.2 0.2 0.4 29-30-31 0.4 0.2 0.6 32-33-34 0.2 0.2
TOTAL 22.2 7.2 0.6 30.0
M O
D E
L - D
125
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 00 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 20.4 20.4
Variable 35-36-01 0.2 0.2 02-03-04 0.2 0.2 05-06-07 0.2 0.2 08-09-10 1.8 0.2 2.0 11-12-13 0.4 0.2 0.6 14-15-16 17-18-19 20-21-22 1.6 1.6 23-24-25 2.4 2.4 26-27-28 1.4 0.2 1.6 29-30-31 1.0 0.2 1.2 32-33-34
TOTAL 20.4 9.2 0.8 30.4
M O
D E
L - D
126
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 03 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 14.0 14.0
Variable 35-36-01 0.2 0.202-03-04 0.2 0.205-06-07 08-09-10 0.4 0.2 0.611-12-13 1.8 0.2 2.014-15-16 0.2 0.2 0.417-18-19 0.2 0.220-21-22 0.8 0.823-24-25 6.2 0.8 7.026-27-28 3.2 0.4 3.629-30-31 1.0 0.6 1.632-33-34 0.2 0.2
TOTAL 14.0 14.4 2.4 30.8
M O
D E
L - D
127
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 meters above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 06 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 4.4 4.4
Variable 35-36-01 0.4 0.4 02-03-04 0.2 0.2 05-06-07 0.4 0.4 08-09-10 0.2 0.4 0.6 11-12-13 0.8 0.4 1.2 14-15-16 1.2 0.4 1.6 17-18-19 0.2 0.2 20-21-22 0.6 0.6 23-24-25 2.6 0.6 3.2 26-27-28 6.2 2.8 0.2 9.2 29-30-31 3.8 3.2 0.2 7.2 32-33-34 1.2 0.2 1.4
TOTAL 4.4 17.8 8.0 0.4 30.6
M O
D E
L - D
128
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 09 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11 to 15
16 to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 1.8 1.8
Variable 35-36-01 0.8 0.6 1.402-03-04 0.6 0.605-06-07 1.0 1.008-09-10 0.6 0.8 1.411-12-13 0.2 0.2 0.2 0.614-15-16 0.6 0.617-18-19 20-21-22 0.8 0.823-24-25 0.6 0.2 0.826-27-28 2.8 2.6 0.4 5.829-30-31 4.8 4.2 2.2 11.232-33-34 1.6 2.8 0.2 4.6
TOTAL 1.8 14.4 11.4 2.8 0.2 30.6
M O
D E
L - D
129
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 12 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION
0 1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 7.6 7.6
Variable 35-36-01 0.2 0.2 02-03-04 0.6 0.6 05-06-07 1.2 1.2 08-09-10 0.8 0.2 1.0 11-12-13 0.8 0.2 1.0 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 23-24-25 0.8 0.8 26-27-28 6.8 0.6 7.4 29-30-31 6.8 1.6 8.4 32-33-34 1.6 0.2 1.8
TOTAL 7.6 20.0 2.8 30.4
M O
D E
L - D
130
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 15 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11 to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 20.2 20.2
Variable 35-36-01 0.6 0.6 02-03-04 05-06-07 0.6 0.6 08-09-10 0.8 0.2 1.0 11-12-13 0.6 0.4 0.2 1.2 14-15-16 0.2 0.2 0.4 17-18-19 20-21-22 0.2 0.2 23-24-25 0.2 0.2 26-27-28 2.6 2.6 29-30-31 2.8 0.4 3.2 32-33-34 0.4 0.2 0.6
TOTAL 20.2 9.0 1.4 0.2 30.8
M O
D E
L - D
131
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 18 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46to 50
>50
TOTAL
Calm 23.6 23.6
Variable 35-36-01 0.6 0.6 02-03-04 0.2 0.2 0.4 05-06-07 0.2 0.2 08-09-10 2.2 0.4 2.6 11-12-13 0.6 0.6 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 0.2 0.2 23-24-25 0.6 0.6 26-27-28 0.8 0.8 29-30-31 0.8 0.8 32-33-34 0.2 0.2
TOTAL 23.6 6.6 0.8 31.0
M O
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132
CLIMATOLOGICAL SUMMARY
MODEL – D
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 – 2002
Time : 21 UTC
Mean number of occurrences of concurrent wind direction (in 30 degree sectors) and wind speed (in knots) within the specified ranges.
WIND SPEED WIND
DIRECTION 0
1 to 5
6 to 10
11to 15
16to 20
21to 25
26to 30
31to 35
36to 40
41to 45
46 to 50
>50
TOTAL
Calm 21.4 21.4
Variable 35-36-01 0.2 0.2 02-03-04 05-06-07 0.4 0.2 0.6 08-09-10 2.0 0.2 2.2 11-12-13 0.6 0.2 0.8 14-15-16 0.2 0.2 17-18-19 0.2 0.2 20-21-22 0.6 0.6 23-24-25 2.6 2.6 26-27-28 1.2 0.2 1.4 29-30-31 0.2 0.2 0.2 0.6 32-33-34
TOTAL 21.4 8.2 1.0 0.2 30.8
M O
D E
L - D
Fig. 5. Windroses - Morning (0300 UTC)
FEBRUARY
422
28
JANUARY
461
36
APRIL
448
12
MARCH
463
16
JUNE
435
8
MAY
463
7
AUGUST
450
11
JULY
463
8
SEPTEMBER
443
17
DECEMBER
460
52
OCTOBER
463
42
NOVEMBER
450
45
SCALE OF FREQUENCIES (%)
0 10 20 30 40 50
N
C
1 - 5 6 - 11 12 - 19 > 19 kmph.
1 - 3 4 - 6 7 - 10 > 10 knots.
N - Total No. of ObservationsC - Total No. of Calms in Percentage Frequencies
N
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
Fig. 6. Windroses - Afternoon (1200 UTC)
FEBRUARY
422
7
JANUARY
459
10
MARCH
448
3
JUNE
437
5
APRIL
447
5
MAY
464
5
AUGUST
445
11
JULY
458
7
SEPTEMBER
446
11
DECEMBER
462
38
SCALE OF FREQUENCIES (%)
0
NOVEMBER
449
39
10 20 30 40 50
N
C
1 - 5 6 - 11 12 - 19 > 19 kmph.
1 - 3 4 - 6 7 - 10 > 10 knots.
N - Total No. of ObservationsC - Total No. of Calms in Percentage Frequencies
N
OCTOBER
465
29
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
MO
DE
L-
E
AERONAUTICALCLIMATOLOGICAL
SUMMARIES
JANUARY FEBRUARY MARCH
APRIL MAY JUNE
JULY AUGUST SEPTEMBER
OCTOBER NOVEMBER DECEMBER
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
133
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 1.4 16.4 6.0 0.8 24.601 1.6 16.4 6.4 0.4 24.802 2.6 16.0 6.2 0.4 25.203 0.2 16.0 8.2 0.8 25.204 9.8 12.0 3.4 25.205 3.8 12.4 8.6 0.6 25.406 2.4 8.4 11.2 2.6 0.2 24.807 0.4 6.8 13.2 4.8 0.2 25.408 5.0 12.0 8.0 0.4 25.409 3.4 13.0 8.6 0.4 25.410 2.6 13.8 8.6 0.4 25.411 3.0 15.0 6.8 0.4 0.2 25.412 6.0 14.6 4.8 25.413 11.0 13.2 0.8 25.014 0.4 14.6 9.8 0.4 25.215 0.6 18.6 6.0 0.2 25.416 1.8 18.6 5.0 25.417 4.8 16.6 4.0 25.418 7.2 15.6 2.6 25.419 10.0 13.2 2.0 25.220 11.8 11.8 1.2 24.821 0.2 14.2 9.2 1.4 25.022 0.2 15.2 8.8 0.8 25.023 0.2 17.0 7.0 0.6 24.8
TOTAL 6.4 164.2 231.4 153.8 46.2 2.0 0.2 604.2 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
134
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 8.4 15.4 3.2 27.001 9.8 14.8 2.2 26.802 9.6 14.2 2.8 26.603 5.4 16.0 4.6 0.6 26.604 1.0 10.2 13.2 2.2 0.2 26.805 0.2 4.8 13.6 7.0 1.0 26.606 2.0 11.4 12.0 1.8 27.207 1.4 6.8 14.8 3.6 26.608 1.2 4.6 15.2 5.4 26.409 0.8 4.2 14.6 7.2 0.2 27.010 0.6 4.6 14.2 6.8 0.6 26.811 0.8 5.0 14.6 6.2 26.612 1.0 6.6 15.6 3.6 26.813 2.0 12.6 11.2 1.0 26.814 3.2 14.6 8.2 0.6 26.615 5.2 16.2 5.4 0.2 27.016 8.0 15.6 3.4 27.017 11.8 12.4 2.8 27.018 0.4 13.0 12.4 1.4 27.219 0.8 14.8 10.4 1.2 27.220 1.8 15.8 8.8 0.6 27.021 3.4 16.4 6.8 0.4 27.022 4.6 16.6 5.6 0.4 27.223 7.0 14.4 5.4 0.2 27.0
TOTAL 52.4 204.4 203.6 146.0 37.6 0.8 644.8 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
135
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 10.8 14.2 3.6 28.601 11.0 14.0 3.4 28.402 9.8 14.2 4.2 0.4 28.603 3.4 12.8 10.2 2.6 29.004 0.4 9.2 12.2 6.2 1.0 29.005 0.2 3.2 11.8 10.4 3.0 0.2 28.806 1.6 9.8 11.0 5.6 0.4 28.407 0.8 6.2 14.0 6.8 0.8 28.608 0.4 5.0 13.8 8.4 1.4 29.009 0.6 3.8 13.4 8.8 2.0 28.610 0.6 2.6 14.4 9.0 2.2 28.811 0.8 3.6 14.2 8.2 2.0 28.812 0.6 6.8 13.0 7.2 1.0 28.613 1.8 10.4 11.4 5.2 0.2 29.014 0.2 2.2 13.4 10.6 2.6 29.015 0.2 3.8 16.6 8.0 0.4 29.016 0.4 6.2 16.2 5.6 0.2 28.617 0.6 9.0 13.6 5.6 28.818 1.6 11.0 13.4 3.0 29.019 2.2 12.8 11.8 2.2 29.020 3.2 13.6 10.6 1.4 28.821 4.4 15.0 8.4 1.0 28.822 6.4 14.4 7.0 0.6 28.423 8.6 14.2 5.4 0.4 28.6
TOTAL 63.4 177.0 210.0 163.2 66.4 10.2 690.2 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
136
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 4.2 13.6 11.2 0.6 29.601 4.2 12.6 12.8 0.4 30.002 1.2 11.8 14.4 2.4 29.803 7.6 12.2 10.2 30.004 1.8 10.6 15.2 2.4 30.005 0.2 6.6 15.0 8.2 30.006 3.4 12.2 13.4 0.6 29.607 0.2 2.2 10.4 14.2 3.0 30.008 0.2 1.2 9.4 14.8 4.4 30.009 1.0 8.4 13.8 6.6 29.810 0.2 1.0 7.8 12.4 8.2 29.611 1.2 7.8 13.4 7.2 29.612 1.6 8.6 14.2 5.0 29.413 0.6 2.8 11.8 12.6 1.8 29.614 0.4 6.6 13.6 8.8 0.4 29.815 1.0 9.8 14.0 4.8 0.2 29.816 1.8 11.8 14.2 2.0 29.817 2.4 13.2 13.4 0.8 29.818 4.4 15.4 9.8 0.4 30.019 6.2 16.4 7.4 30.020 0.2 8.8 15.2 5.6 0.2 30.021 0.6 10.6 15.4 3.4 30.022 1.4 12.6 13.4 2.2 29.623 3.0 12.6 13.0 1.4 30.0
TOTAL 14.8 109.6 212.4 205.2 136.4 37.4 715.8 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
137
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 0.2 3.4 16.4 11.0 31.001 0.2 2.8 15.6 11.6 0.2 30.402 0.2 0.2 1.6 10.4 16.4 1.8 30.603 0.2 1.0 6.0 15.8 7.6 30.604 1.2 3.6 12.0 13.6 0.6 31.005 0.6 2.2 8.0 15.8 4.4 31.006 0.2 2.2 5.6 14.2 8.6 30.807 0.2 1.4 4.8 12.2 11.6 0.4 30.608 1.6 3.4 10.6 14.0 0.8 30.409 1.0 4.0 9.2 15.2 1.6 31.010 0.6 4.2 8.6 14.2 3.0 30.611 0.2 0.8 3.4 9.8 13.8 2.6 30.612 0.4 5.2 9.8 14.6 0.8 30.813 1.2 5.2 12.6 11.2 0.2 30.414 0.2 2.4 7.0 15.4 5.6 30.615 0.2 4.0 8.4 16.6 1.8 31.016 0.2 5.4 10.8 14.0 0.6 31.017 0.8 6.2 12.8 10.8 30.618 0.6 6.8 17.0 6.4 30.819 1.0 8.4 17.0 4.4 30.820 1.4 8.6 18.0 3.0 31.021 1.4 11.2 17.2 1.2 31.022 2.2 12.8 14.8 0.6 30.423 0.2 2.4 14.0 13.6 0.2 30.4
TOTAL 0.2 1.0 21.6 143.2 247.2 198.6 116.2 9.4 737.4 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
138
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 1.2 17.8 9.4 28.401 0.6 16.8 11.2 28.602 0.6 11.2 16.0 0.8 28.603 0.6 6.0 20.0 1.8 28.404 0.8 3.4 17.6 6.4 28.205 0.6 3.0 12.4 12.4 28.406 0.6 2.0 9.6 15.0 0.8 28.007 0.4 2.2 5.8 17.2 2.8 28.408 0.8 2.8 4.8 16.0 4.0 28.409 3.0 4.8 14.0 6.2 28.010 0.4 3.6 4.0 13.4 6.8 28.211 0.4 3.0 5.4 12.6 7.0 28.412 0.2 3.4 7.0 12.6 5.4 28.613 0.2 4.2 7.6 13.4 3.2 28.614 0.2 4.8 10.6 11.0 1.6 28.215 0.2 6.2 13.2 8.4 28.016 0.2 6.6 14.0 7.2 28.017 0.2 7.6 16.0 4.6 28.418 0.4 8.2 17.2 2.8 28.619 0.4 9.4 16.4 2.0 28.220 0.4 10.8 15.4 1.2 27.821 0.4 12.6 15.0 0.2 28.222 0.6 14.6 13.0 0.2 28.423 1.2 14.4 12.2 27.8
TOTAL 11.6 177.6 278.6 173.2 37.8 678.8 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
139
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 0.4 20.6 10.0 31.001 0.4 19.2 10.8 30.402 0.4 17.2 13.0 30.603 12.8 18.0 0.2 31.004 9.4 17.2 4.2 30.805 0.2 6.2 16.6 7.6 30.606 5.2 15.4 10.0 30.607 4.2 13.8 12.4 30.408 3.4 14.0 11.4 1.6 30.409 2.2 13.2 12.0 2.8 30.210 3.8 12.6 11.0 3.4 30.811 3.8 14.0 9.6 3.4 30.812 4.4 14.2 9.2 2.8 30.613 5.2 15.0 9.6 1.0 30.814 7.8 14.8 8.2 30.815 9.0 14.6 7.0 30.616 12.0 13.4 5.6 31.017 13.4 13.2 4.2 30.818 0.2 14.4 14.2 2.2 31.019 0.2 15.6 13.8 1.4 31.020 17.2 13.8 31.021 18.4 12.2 30.622 19.0 11.8 30.823 0.2 20.4 10.4 31.0
TOTAL 2.0 264.8 330.0 125.8 15.0 737.6 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
140
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 0.2 22.4 2.8 0.2 25.601 0.2 22.0 2.8 0.2 25.202 0.2 18.0 7.0 25.203 0.2 10.6 15.0 25.804 5.8 19.6 0.2 25.605 3.4 20.2 2.0 25.606 2.6 18.2 4.8 25.607 2.6 14.8 8.2 25.608 2.8 12.2 10.6 25.609 3.2 11.2 11.6 26.010 3.0 10.8 12.2 26.011 3.4 10.4 12.2 26.012 5.2 10.6 10.0 25.813 0.2 5.2 14.4 6.2 26.014 6.6 15.6 3.8 26.015 7.8 16.4 1.8 26.016 10.0 15.8 0.2 26.017 11.4 14.6 26.018 0.2 12.0 13.6 25.819 0.2 14.0 11.4 25.620 0.2 16.0 9.8 26.021 0.2 17.8 7.6 25.622 0.2 19.2 6.2 25.623 0.2 20.6 5.0 25.8
TOTAL 2.2 245.6 286.0 84.2 618.0
Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
141
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 6.2 23.0 0.6 29.801 6.2 22.8 0.4 29.402 3.8 23.2 2.4 0.2 29.603 0.6 19.2 9.8 29.604 0.6 9.4 19.2 0.4 29.605 0.6 5.2 23.6 0.4 29.806 0.6 3.2 19.6 6.2 29.607 0.2 3.4 16.6 9.4 29.608 0.4 3.4 15.4 10.6 29.809 0.6 3.2 12.8 13.2 29.810 0.6 3.6 12.6 13.0 29.811 0.6 5.2 13.6 10.4 29.812 0.8 5.6 15.6 7.8 29.813 1.2 6.6 19.8 2.2 29.814 1.2 8.4 20.2 29.815 0.8 13.0 15.6 29.416 1.2 16.8 11.4 29.417 1.2 19.6 8.6 29.418 1.6 23.2 4.8 29.619 2.2 23.8 3.8 29.820 2.4 25.0 2.2 29.621 3.4 24.6 1.8 29.822 4.2 24.4 0.8 0.2 29.623 5.8 23.4 0.4 29.6
TOTAL 47.0 339.2 251.6 74.0 711.8 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
142
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 5.4 21.0 4.6 31.001 5.4 21.0 4.4 30.802 3.2 19.2 7.8 30.203 0.4 11.8 18.4 0.4 31.004 0.2 3.4 21.0 6.4 31.005 0.8 13.4 16.8 31.006 0.8 6.8 22.4 1.0 31.007 0.8 3.0 22.2 4.2 30.208 1.0 1.6 20.8 7.0 30.409 0.8 1.0 19.8 9.4 31.010 0.8 0.8 20.6 8.6 30.811 0.6 1.8 23.4 5.0 30.812 1.0 6.6 22.0 1.2 30.813 0.8 17.8 12.2 30.814 3.2 22.4 5.2 30.815 4.8 24.2 2.0 31.016 8.4 21.6 0.8 30.817 10.8 20.2 31.018 16.8 14.2 31.019 18.6 12.2 30.820 0.8 20.8 9.0 30.621 1.2 21.2 8.2 30.622 1.8 22.6 6.6 31.023 4.0 21.8 5.2 31.0
TOTAL 22.4 232.8 252.8 195.0 36.4 739.4 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
143
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 0.6 11.0 14.6 3.6 29.801 0.4 11.8 14.0 3.4 29.602 0.6 10.8 14.2 4.2 29.803 4.0 17.2 7.8 1.0 30.004 11.8 14.6 3.6 30.005 2.6 17.0 9.0 1.4 30.006 0.2 10.8 15.8 3.2 30.007 6.0 18.8 5.2 30.008 3.6 20.0 6.0 0.4 30.009 0.2 2.0 20.2 7.2 0.4 30.010 0.2 1.6 20.4 7.4 0.4 30.011 0.2 4.2 20.2 4.8 0.4 29.812 0.2 11.8 16.6 1.4 30.013 2.2 18.6 8.8 0.2 29.814 6.4 17.6 5.8 29.815 0.2 9.8 16.0 3.6 29.616 0.8 12.8 13.8 2.4 29.817 1.0 14.2 13.2 1.4 0.2 30.018 1.6 17.2 10.2 0.8 29.819 3.2 17.8 8.6 0.2 29.820 4.8 19.0 6.2 30.021 6.4 18.2 5.4 30.022 9.0 17.0 3.8 0.2 30.023 11.0 15.2 3.2 0.4 29.8
TOTAL 1.8 75.6 225.0 207.2 169.2 37.0 1.6 717.4 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
144
CLIMATOLOGICAL SUMMARY
MODEL – E
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 - 2002
Mean number of occurrences of screen temperature (degrees Celsius) in specified ranges of 5 degrees at the specified times.
TEMPERATURE TIME (UTC)
-10 to -5
-5 to 0
0 to 5
5 to 10
10 to 15
15 to 20
20 to 25
25 to 30
30 to 35
35 to 40
40 to 45
45 to 50
TOTAL
00 0.2 13.2 16.6 0.4 30.401 0.2 15.0 15.0 0.2 30.402 0.2 16.0 13.4 0.8 30.403 8.2 20.4 2.2 30.804 3.8 12.2 13.4 0.8 30.205 2.4 4.8 16.8 6.6 30.606 0.6 3.4 10.4 15.4 0.8 30.607 3.8 5.0 18.8 3.0 30.608 2.6 3.0 19.4 5.6 30.609 1.2 3.8 17.6 8.0 30.610 0.8 4.6 17.0 8.2 30.611 1.2 5.6 18.2 5.6 30.612 3.0 11.2 15.6 0.6 30.413 3.8 21.4 5.6 30.814 6.4 22.2 2.0 30.615 0.2 10.2 19.4 1.0 30.816 1.2 13.4 16.2 0.2 31.017 1.8 15.4 13.6 0.2 31.018 3.2 19.6 8.2 31.019 3.6 22.0 5.2 30.820 5.8 21.2 3.8 30.821 7.2 21.6 2.0 30.822 9.6 20.0 1.0 30.623 12.0 18.0 0.8 30.8
TOTAL 0.6 103.8 270.0 191.2 138.4 31.8 735.8 Note : The range 5-10 comprises the values 5.0 to 9.9 inclusive
M O
D E
L - E
0
5
10
15
20
25
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
0
5
10
15
20
25
30
35
40
45
50
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Fig. 7 (a) Mean Monthly Temperature
Fig. 7 (b) Highest Maximum Temperature (ever recorded)
Fig. 7 (c) Lowest Minimum Temperature (ever recorded)
°C
27.7
,7/1
973
33.4
,5/1
967
39.3
,29/1
973
45.3
,25/1
970
47.2
,20/1
978
46.5
,19/1
972
44.5
,2/1
974
41.9
,3/1
972
40.6
,2/1
979
39.6
,2/1
961
35.2
,6/1
978
30.0
,12/1
968
-1.6
,6/1
974
3.4
,1/1
972
8.6
,6/1
967
14.6
,2/1
966
19.8
,6/1
970
17.8
,7/1
964
20.2
,30/1
968
13.6
,23/1
972
9.9
,30/1
964
2.1
,30/1
966
-1.3
,30/1
973
-2.2
,11/1
967°C
Temperature
0
10
20
30
40
50
Jan Feb M ar A pr M ay Jun Jul A ug S ep Oc t Nov Dec
0C
m ean m ax im um m ean m inim um
°C
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
TA
BL
E-V
I
AERONAUTICALCLIMATOLOGICAL
SUMMARIES
JANUARY FEBRUARY MARCH
APRIL MAY JUNE
JULY AUGUST SEPTEMBER
OCTOBER NOVEMBER DECEMBER
NEXTBACKCONTENTS
MODEL AMODEL AMODEL AMODEL AMODEL A MODEL B MODEL C TABLE VIMODEL EMODEL D
145
CLIMATOLOGICAL SUMMARY TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : January Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 991.8 992.3 992.3 992.0 991.6 02 991.6 992.9 994.0 991.0 992.4 03 991.4 992.8 993.6 990.5 991.3 04 990.9 992.7 993.5 990.6 991.1 05 989.8 991.4 991.6 988.4 989.3 06 988.2 987.5 990.6 987.9 989.5 07 988.4 989.9 990.8 988.6 989.9 08 989.6 991.5 992.4 989.3 990.5 09 989.4 991.3 992.4 989.8 991.4 10 990.1 992.0 992.7 989.7 990.6 11 989.1 990.5 990.8 987.8 988.7 12 987.5 988.7 989.5 987.0 988.7 13 988.1 990.0 990.7 987.5 988.7 14 987.9 989.4 990.1 987.1 988.5 15 987.0 988.9 990.0 987.5 989.6 16 988.5 990.5 991.2 988.4 989.6 17 988.9 990.7 992.1 988.5 989.8 18 988.5 990.5 991.3 990.9 990.0 19 988.8 990.4 991.4 988.3 990.2 20 988.9 990.8 991.9 988.5 990.0 21 988.8 990.2 991.0 987.1 988.3 22 986.7 988.1 989.4 985.5 987.8 23 987.0 988.9 990.1 987.5 988.9 24 987.8 989.4 990.8 988.3 989.5 25 988.9 990.6 991.0 987.8 989.1 26 987.4 988.6 989.5 986.6 987.8 27 986.8 988.3 989.8 986.3 988.1 28 986.4 988.8 989.9 990.3 990.0 29 989.7 991.7 992.7 989.8 991.1 30 989.4 990.8 991.5 988.6 989.8 31 988.7 990.6 991.4 988.9 990.6
TOTAL 30652.0 30700.7 30730.0 30646.0 30682.4
Pm Mean 988.8 990.3 991.3 988.6 989.8 • Required only if summary refers to a station at an international aerodrome Notes a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is
based, are those made at the meteorological pressure observation site at the station b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and
the specified time.
T A
B L
E - V
I
146
CLIMATOLOGICAL SUMMARY TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : February Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 989.1 990.3 989.6 986.8 988.5 02 988.3 990.1 991.5 988.4 990.2 03 989.3 990.8 992.8 988.3 990.2 04 989.1 990.5 991.3 987.3 988.7 05 987.5 989.8 990.6 987.7 989.3 06 987.9 990.3 990.8 987.7 989.0 07 987.7 990.1 991.1 988.1 989.4 08 988.4 990.3 991.1 988.5 990.3 09 989.4 990.9 991.6 988.4 989.8 10 988.1 989.7 990.7 987.4 988.6 11 987.6 988.9 989.5 986.7 989.4 12 989.0 991.3 992.4 989.8 991.4 13 989.9 991.5 992.3 988.7 990.7 14 988.4 990.1 990.7 987.4 989.1 15 987.4 989.7 990.4 987.5 989.3 16 988.0 989.9 990.6 986.8 988.3 17 987.5 989.0 989.8 986.4 988.1 18 987.1 989.1 989.7 986.7 988.6 19 987.7 989.8 990.5 987.2 988.8 20 986.6 988.5 989.2 985.7 987.8 21 987.0 990.2 990.1 988.0 988.6 22 987.7 989.9 990.6 987.5 989.2 23 987.4 989.4 990.3 987.1 988.0 24 986.3 987.8 988.0 984.7 986.4 25 985.1 987.0 988.3 985.8 988.0 26 986.8 988.5 989.6 986.4 987.5 27 986.5 988.5 989.3 986.4 988.3 28 743.2 989.4 990.2 986.9 988.9 29 984.9 986.0 986.5 983.4 984.2 30 31
TOTAL 28398.9 28697.3 28719.1 28627.7 28674.6
Pm Mean 979.3 989.6 990.3 987.2 988.8 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
147
CLIMATOLOGICAL SUMMARY TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : March Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 987.2 988.8 989.2 985.9 987.4 02 985.8 987.4 988.5 985.7 987.7 03 987.0 989.1 989.6 986.8 987.8 04 986.7 988.1 988.3 984.7 985.8 05 985.1 987.4 987.8 984.3 986.0 06 984.4 986.4 987.4 984.6 986.3 07 984.9 986.7 987.4 984.3 985.9 08 984.5 986.4 986.9 984.0 986.8 09 984.2 986.1 987.0 983.5 985.3 10 983.9 986.0 986.8 983.7 985.3 11 983.5 985.4 985.9 982.4 984.1 12 982.8 984.7 985.3 981.1 984.2 13 983.9 985.6 987.1 984.1 986.4 14 985.1 987.4 988.1 985.0 986.8 15 985.4 987.3 988.0 984.9 986.6 16 984.3 986.2 986.6 983.1 984.0 17 982.9 984.4 984.7 982.2 983.7 18 983.8 986.2 986.8 984.0 985.9 19 985.1 987.0 987.5 984.4 985.4 20 983.7 985.6 985.6 981.8 983.8 21 982.7 984.4 984.5 982.0 983.4 22 982.0 983.8 984.0 981.2 983.0 23 981.5 983.6 984.5 981.5 983.4 24 982.4 984.7 984.9 981.4 982.6 25 981.4 983.4 983.9 980.9 982.7 26 982.4 984.7 985.2 982.0 983.9 27 982.7 984.6 984.8 981.6 983.2 28 982.1 983.8 984.1 980.3 982.7 29 982.2 984.3 984.8 981.6 983.5 30 982.6 985.0 983.7 981.4 983.6 31 982.9 984.8 985.3 981.3 983.4
TOTAL 30499.1 30559.3 30574.2 30475.7 30530.6
Pm Mean 983.8 985.8 986.3 983.1 984.9 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
148
CLIMATOLOGICAL SUMMARY TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : April Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 983.6 984.7 984.7 981.3 983.0 02 981.8 983.8 983.9 980.3 982.2 03 981.6 983.7 984.5 981.3 983.1 04 982.1 984.6 985.0 980.6 982.8 05 982.3 983.8 984.3 980.8 982.9 06 982.2 984.0 985.6 981.0 982.5 07 981.7 983.7 983.8 980.2 981.4 08 980.5 982.1 982.6 977.9 980.1 09 980.0 981.6 981.8 978.0 980.2 10 979.4 981.5 981.7 978.5 980.5 11 980.4 982.5 982.7 978.9 981.2 12 981.0 982.7 983.0 979.0 981.0 13 980.2 981.8 982.2 977.9 980.3 14 980.4 982.6 982.9 978.8 981.3 15 981.2 983.6 984.1 980.6 982.8 16 981.8 983.5 983.5 979.2 981.5 17 980.5 982.1 982.3 978.8 980.5 18 979.9 981.8 982.1 979.7 980.4 19 979.5 981.3 981.4 977.8 979.7 20 979.4 981.5 981.4 977.6 979.4 21 978.9 980.7 980.4 976.8 978.8 22 978.7 980.5 980.5 976.5 978.4 23 978.0 979.7 979.4 975.4 977.6 24 976.9 979.0 979.6 974.8 976.9 25 976.3 978.0 977.5 973.8 977.2 26 976.9 979.2 979.3 976.0 978.1 27 977.2 979.2 979.3 974.7 976.9 28 976.6 978.1 977.7 974.0 962.9 29 976.5 978.2 978.4 974.5 976.8 30 977.0 978.9 978.9 975.3 977.2 31
TOTAL 29392.5 29448.4 29454.5 29340.0 29387.6
Pm Mean 979.8 981.6 981.8 978.0 979.6 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
149
CLIMATOLOGICAL SUMMARY
TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : May Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 976.7 978.7 978.7 975.6 976.9 02 976.9 979.0 979.1 975.0 977.3 03 977.0 979.0 979.1 975.2 978.0 04 977.5 979.3 978.9 975.3 977.7 05 977.5 979.4 979.2 975.0 976.8 06 977.1 978.9 978.7 974.6 977.2 07 977.2 979.7 979.8 976.5 977.4 08 978.1 979.8 979.4 975.7 977.8 09 977.6 979.1 978.9 974.7 976.7 10 976.3 977.8 977.4 973.8 975.8 11 976.3 979.0 978.0 973.8 976.1 12 976.3 977.9 977.8 973.3 977.0 13 977.0 979.1 979.1 974.6 976.5 14 976.6 978.1 977.9 973.5 976.3 15 976.3 978.3 977.9 973.4 976.3 16 976.2 977.9 977.9 974.0 975.8 17 975.7 977.9 977.7 972.8 976.1 18 974.9 976.5 976.3 971.1 973.5 19 973.5 974.8 974.2 970.3 972.7 20 973.0 974.8 975.0 971.1 973.8 21 974.3 975.6 975.9 972.6 975.0 22 974.8 976.6 975.8 972.6 974.5 23 974.7 976.1 975.8 971.9 973.8 24 973.3 974.9 974.4 970.7 972.7 25 972.5 974.2 973.7 969.7 973.1 26 972.0 974.2 974.1 970.9 973.1 27 973.8 975.8 975.5 971.6 975.3 28 974.6 975.6 976.1 972.2 973.7 29 974.1 976.5 975.3 971.9 974.0 30 974.4 975.9 976.0 972.6 974.2 31 975.0 977.1 976.8 973.4 975.0
TOTAL 30241.2 30297.5 30290.4 30169.4 30240.1
Pm Mean 975.5 977.3 977.1 973.2 975.5 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
150
CLIMATOLOGICAL SUMMARY TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : June Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 975.0 977.0 976.9 973.5 975.1 02 975.0 976.8 976.9 973.5 976.0 03 975.3 977.5 977.3 973.4 974.9 04 975.5 977.4 977.2 974.2 976.1 05 975.9 977.6 977.3 973.4 974.7 06 974.9 976.0 976.3 972.3 974.1 07 973.6 975.6 975.5 971.5 973.2 08 972.6 974.1 974.1 970.6 973.4 09 973.2 975.2 975.2 971.1 973.3 10 973.3 974.4 974.3 970.7 973.0 11 974.1 975.4 975.5 971.5 974.3 12 974.3 976.0 975.3 971.6 973.8 13 973.4 974.8 974.9 971.5 974.0 14 973.5 974.9 975.6 971.9 973.8 15 973.7 974.9 974.6 970.6 973.2 16 972.8 974.6 975.1 971.2 973.3 17 972.6 974.5 974.6 971.5 973.6 18 973.4 974.8 974.8 971.1 973.3 19 973.4 974.8 974.9 970.8 972.9 20 972.1 973.4 973.2 969.4 971.2 21 971.0 972.2 971.8 968.4 970.5 22 970.7 971.8 971.5 968.6 971.5 23 971.7 972.8 973.0 970.5 972.2 24 972.1 973.4 974.0 970.7 972.8 25 972.3 973.3 973.1 977.4 972.3 26 971.6 973.0 973.3 970.1 972.8 27 972.7 974.6 974.7 971.2 974.3 28 974.5 975.5 975.7 971.6 974.0 29 973.7 975.0 974.9 971.7 973.6 30 973.0 974.4 974.1 971.4 973.8 31
TOTAL 29200.9 29245.7 29245.6 29146.9 29205.0
Pm Mean 973.4 974.9 974.9 971.6 973.5 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
151
CLIMATOLOGICAL SUMMARY
TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : July Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 973.0 973.7 973.5 970.8 972.4 02 971.6 972.9 977.3 970.3 972.3 03 971.9 973.4 973.8 970.3 973.0 04 972.5 973.9 973.8 970.7 973.2 05 973.0 974.5 974.4 970.7 972.9 06 972.0 973.6 973.7 970.1 972.4 07 971.8 973.5 973.6 970.7 973.0 08 972.6 973.9 973.8 969.8 972.4 09 971.7 973.0 973.2 969.6 971.8 10 971.3 972.9 973.0 968.8 971.4 11 970.7 972.0 972.0 969.4 971.9 12 971.6 972.9 973.6 970.5 973.4 13 972.7 974.1 974.4 970.8 973.0 14 972.7 973.8 973.7 970.8 973.1 15 972.4 973.8 973.7 970.4 972.5 16 972.0 973.7 973.8 970.9 973.2 17 972.6 974.2 974.1 971.0 973.3 18 973.1 974.8 975.1 971.6 974.0 19 972.2 973.8 974.6 971.0 973.3 20 972.2 973.3 974.1 970.0 972.9 21 972.2 973.6 974.2 971.0 973.1 22 972.5 974.3 974.3 971.9 974.1 23 973.3 974.8 974.9 971.9 973.6 24 972.8 973.9 974.2 971.1 972.8 25 972.9 974.6 974.6 971.7 973.8 26 973.3 974.5 974.7 971.7 973.5 27 972.7 974.2 974.5 971.6 973.4 28 973.1 974.6 975.2 972.3 974.2 29 973.8 975.5 975.6 972.4 974.6 30 974.0 975.4 975.6 972.4 972.9 31 972.3 976.3 976.4 973.6 975.6
TOTAL 30146.5 30193.4 30203.4 30099.8 30167.0
Pm Mean 972.5 974.0 974.3 971.0 973.1 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
152
CLIMATOLOGICAL SUMMARY TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : August Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 975.5 976.8 976.6 973.0 974.6 02 974.2 975.4 975.3 971.6 973.8 03 973.9 975.3 975.8 972.4 975.2 04 974.9 976.3 976.6 973.5 975.2 05 974.9 976.2 976.2 972.9 974.9 06 974.2 975.4 975.8 972.7 975.1 07 974.6 975.7 975.6 972.3 974.8 08 974.3 975.8 975.2 971.9 974.3 09 974.1 975.4 975.9 972.3 975.2 10 974.6 975.9 976.4 973.4 975.6 11 974.5 975.7 975.9 972.6 974.5 12 974.2 975.3 975.5 971.8 973.9 13 973.7 974.8 975.0 972.0 974.6 14 974.4 976.1 976.9 973.7 976.7 15 976.3 978.0 978.2 974.5 977.0 16 975.8 976.8 977.1 973.8 975.7 17 974.7 976.2 976.4 972.8 974.8 18 974.6 976.1 976.6 974.3 976.7 19 976.4 977.3 978.3 975.7 977.6 20 976.7 978.3 978.5 975.1 977.1 21 976.0 977.4 977.5 974.2 976.5 22 976.0 977.4 977.7 974.2 977.1 23 976.9 978.5 978.8 975.6 977.7 24 977.2 978.3 978.3 974.8 976.9 25 976.9 978.0 978.0 974.2 976.4 26 975.9 977.7 977.8 974.7 976.8 27 976.8 977.7 980.1 974.1 975.4 28 974.2 975.6 975.5 971.6 974.3 29 974.7 976.1 976.2 972.3 974.8 30 974.4 975.6 975.8 972.3 974.8 31 974.4 975.7 976.3 973.1 975.5
TOTAL 30229.9 30270.8 30279.8 30173.4 30243.5
Pm Mean 975.2 976.5 976.8 973.3 975.6 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
153
CLIMATOLOGICAL SUMMARY
TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : September Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 975.8 977.6 977.8 974.7 977.4 02 976.8 978.2 978.4 975.1 981.6 03 977.5 978.7 978.8 976.4 978.5 04 978.2 979.5 979.6 976.0 978.6 05 977.8 979.2 979.3 975.9 978.2 06 976.9 978.7 978.9 975.5 977.7 07 977.3 979.0 979.4 976.6 978.8 08 978.9 980.1 980.3 977.1 979.3 09 978.6 979.8 979.8 977.2 978.2 10 977.5 979.0 979.0 976.0 977.9 11 977.8 979.2 979.4 976.0 978.5 12 978.1 979.9 979.6 977.0 979.0 13 978.4 979.8 979.8 976.9 979.5 14 978.9 980.5 980.7 977.8 979.1 15 978.7 980.3 980.5 977.0 978.9 16 978.3 979.9 980.0 976.7 978.9 17 978.5 979.8 980.1 976.8 978.9 18 978.7 980.3 980.5 977.5 979.9 19 980.1 981.7 981.9 978.9 981.5 20 981.0 982.5 982.4 979.6 981.5 21 981.2 982.8 983.0 979.0 981.2 22 981.3 982.9 983.0 979.5 981.3 23 981.1 983.0 983.1 979.5 981.7 24 980.8 982.6 982.5 979.2 981.5 25 981.4 982.5 982.9 979.1 981.3 26 981.4 983.3 983.6 980.0 982.1 27 981.9 981.5 983.6 970.0 982.1 28 982.2 983.7 983.6 980.1 982.0 29 982.3 984.5 983.6 980.0 982.4 30 982.0 983.5 983.5 980.1 982.3 31
TOTAL 29379.4 29424.0 29428.6 29321.2 29399.8
Pm Mean 979.3 980.8 981.0 977.4 980.0 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
154
CLIMATOLOGICAL SUMMARY TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : October Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 982.2 983.6 983.9 980.5 983.0 02 982.8 984.4 985.2 980.7 978.6 03 981.9 983.5 983.5 979.9 981.9 04 982.0 983.9 984.1 980.5 982.6 05 982.2 984.3 984.3 981.5 982.9 06 983.2 984.8 984.8 981.6 983.5 07 983.4 985.0 984.8 981.5 983.3 08 983.3 985.1 984.9 981.2 982.7 09 982.4 984.1 984.1 980.8 982.7 10 983.1 985.1 984.7 981.3 982.9 11 983.0 984.5 984.6 981.0 982.3 12 982.5 984.4 984.6 981.4 983.3 13 983.4 985.3 985.2 981.9 983.4 14 983.4 985.3 985.0 981.6 983.2 15 983.7 985.5 985.4 982.7 984.2 16 983.7 985.5 985.3 981.9 983.7 17 982.7 984.1 983.8 980.7 982.1 18 981.1 982.4 982.5 977.9 981.4 19 981.1 983.0 983.1 980.5 982.1 20 981.9 984.0 984.1 982.0 983.8 21 983.3 984.9 984.2 982.1 983.7 22 983.7 985.9 985.8 983.1 984.9 23 984.5 986.4 986.0 983.1 985.0 24 984.7 986.9 986.7 984.5 985.1 25 984.6 986.5 986.6 983.7 985.2 26 984.9 986.8 986.7 983.8 985.0 27 984.5 986.4 986.4 983.6 985.0 28 984.7 986.4 986.1 983.0 984.6 29 984.3 986.0 985.9 982.9 984.7 30 983.9 985.8 986.2 982.9 984.5 31 984.0 986.0 986.0 983.4 985.5
TOTAL 30480.1 30535.8 30534.5 30437.2 30486.8
Pm Mean 983.2 985.0 985.0 981.8 983.4 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
155
CLIMATOLOGICAL SUMMARY
TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : November Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 985.7 987.5 987.5 984.9 986.9 02 986.9 989.1 989.1 986.0 987.4 03 986.8 988.9 988.7 985.5 987.0 04 986.2 988.1 988.1 985.7 986.8 05 986.2 988.1 988.2 985.2 986.7 06 985.8 988.0 987.9 985.8 987.5 07 986.6 988.9 989.0 985.8 987.5 08 987.3 988.9 988.9 986.3 987.9 09 987.4 988.9 988.8 986.1 987.4 10 987.0 989.0 988.8 986.0 987.6 11 987.5 989.4 989.5 986.3 987.8 12 987.2 988.8 989.0 985.4 987.6 13 986.8 988.5 988.5 985.4 986.9 14 986.6 988.7 988.5 985.8 987.1 15 986.6 988.5 988.9 986.9 988.5 16 988.0 989.9 989.9 986.8 988.1 17 987.3 793.3 989.5 986.5 987.5 18 987.0 988.5 988.7 985.6 986.9 19 986.5 988.4 988.3 985.3 987.0 20 986.8 989.0 989.1 986.5 988.2 21 987.8 990.0 989.9 987.1 988.7 22 987.9 989.9 992.3 987.3 988.8 23 988.2 990.3 990.5 987.0 988.4 24 987.3 989.2 989.5 987.0 988.0 25 987.6 989.0 989.1 986.2 987.6 26 987.2 989.3 989.6 986.9 988.4 27 987.9 990.1 990.5 987.8 988.9 28 988.5 990.6 990.6 987.4 988.9 29 988.5 990.4 990.7 987.6 989.2 30 988.5 990.6 990.8 988.0 989.5 31
TOTAL 29615.6 29477.8 29678.4 29590.1 29634.7
Pm Mean 987.2 982.6 989.3 986.3 987.8 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I
156
CLIMATOLOGICAL SUMMARY
TABLE – VI
Station : NEW DELHI (IGI) AIRPORT Latitude : 28o 34’ N Elevation : 233 metres above MSL
Month : December Longitude : 077° 07’ E
Period : 1998 - 2002
Mean monthly atmospheric pressure (in hPa) at the reference level/mean sea level (for low level stations) at the standard times for surface synoptic observation.
TIME IN UTC
DATE 0000 0300 0600 1200 1800
01 988.9 990.6 991.1 988.2 989.7 02 988.9 990.8 991.2 988.4 990.1 03 989.6 991.7 992.0 989.9 990.5 04 989.5 991.2 991.1 987.5 988.8 05 987.8 989.8 989.9 987.1 988.7 06 988.2 990.1 990.6 987.9 990.1 07 988.9 990.7 991.1 987.9 989.3 08 988.7 990.7 991.2 988.4 990.2 09 988.9 990.7 991.0 988.4 989.8 10 988.8 990.8 991.2 988.6 990.3 11 990.0 992.0 992.5 989.6 991.1 12 990.4 992.4 992.7 990.5 992.0 13 991.3 992.9 992.9 990.0 991.3 14 990.3 992.1 992.3 989.5 990.8 15 989.8 991.3 991.6 988.6 989.8 16 989.5 991.5 992.0 989.1 990.4 17 989.4 991.1 991.7 988.8 989.9 18 988.1 989.6 990.7 987.7 989.4 19 988.5 990.3 991.0 988.1 989.3 20 988.5 990.1 990.8 987.9 989.4 21 988.8 990.5 991.0 988.4 990.2 22 989.9 991.9 992.3 989.6 991.1 23 990.0 991.9 992.3 989.1 990.5 24 991.0 991.9 992.5 989.4 991.0 25 990.0 991.7 992.3 989.6 991.0 26 990.1 991.9 992.5 989.9 991.0 27 990.2 991.9 992.8 990.2 991.8 28 990.9 992.9 993.4 989.8 992.0 29 990.7 992.0 991.9 989.3 990.3 30 988.9 990.5 990.9 988.3 989.5 31 988.3 989.8 990.4 988.0 990.3
TOTAL 30672.8 30727.3 30740.9 30653.7 30699.6
Pm Mean 989.4 991.2 991.6 988.8 990.3 • Required only if summary refers to a station at an international aerodrome Notes
a) The pressure observations (expressed in hPa) reduced to the reference level / msl upon which the above table is based, are those made at the meteorological pressure observation site at the station
b) An entry in the column headed Pm gives the mean reference level / m.s.l. pressure for the specified month and the specified time.
T A
B L
E - V
I