environmental agengy of the republic of slovenia

INTERCOMPARISON BETWEEN RA VI ( France, )

AND RA II (Australia)

REGIONAL INSTRUMENT CENTRES

ENVIRONMENTAL AGENGY

OF THE REPUBLIC OF SLOVENIA

Slovakia, Slovenia

4 W METHOD

W

W

W

W

HY

HO

ITH

HAT

WHY

METROLOGY LABORATORIES

MANUFACTURERS / PUBLIC

NATIONAL LABORATORY

BIPM

METROLOGY PYRAMID

WHY

NMHS

AWS / STATION

RIC

WMO

METEOROLOGY PYRAMID

WHY

DISSEMINATION TRACEABILITY

INTERCOMPARISON

WHY

WMO N°8 Guide to Meteorological Instruments And Methods of observation:

« Intercomparisons of instruments and observing systems, together with agreed quality control procedures, are essential for the establishment of compatible data sets. »

Term Of Reference for RICTerm Of Reference for RIC CapabilityCapability ““(f) A RIC must participate in, or organize inter-laboratory comparisons of (f) A RIC must participate in, or organize inter-laboratory comparisons of

standard calibration instruments and methods,standard calibration instruments and methods, » »

WHO

jerome.duvernoy@meteo.frdrago.groselj@gov.si

j.gorman@bom.gov.au jan.danc@shmu.sk

ENVIRONMENTAL AGENGY

OF THE REPUBLIC OF SLOVENIA

WHO

Slovak Hydrometeorological

InstituteJeséniova 17

833 15 BratislavaSlovakia

www.shmu.skjan.danc@shmu.sk

WHO

• Range: -30°C to +50°C,• Method of immediate comparison,• Reference standard: SPRT

Rosemount, model 162CE,• Resistance bridge: Hart Scientific,

model 1560, 2560 and 2562 for PRT calibrations,

• Standard resistors: 25, 100 Tinsley 5685A,

• Liquid bath Julabo FP40-HP,• Best Measure Capability 0.05°C.

TEMPERATURE

WHO

• Traceability to National Standard,• Range: 10% RH to 95% RH,• Method of immediate comparison,• Monitoring of the calibration process,• Best measure capability 2.5% RH

HYGROMETRY

WHO

Traceability to National Standard, Range: 600 hPa to 1100 hPa, Method of immediate comparison, Best Measure Capability is 0.11 hPa

PRESSURE

DH Instruments PPC2+

WHOENVIRONMENTAL AGENGY

OF THE REPUBLIC OF SLOVENIA

Environmental Agency of the Republic of Slovenia

Vojkova 1b1000 Ljubljana

Sloveniawww.arso.gov.si

Drago.Groselj@gov.si

WHOENVIRONMENTAL AGENGY

OF THE REPUBLIC OF SLOVENIA

HYGROMETRY

WHOENVIRONMENTAL AGENGY

OF THE REPUBLIC OF SLOVENIA

TEMPERATURE

WHOENVIRONMENTAL AGENGY

OF THE REPUBLIC OF SLOVENIA

PRESSURE

WHO

Quantities Range BMC (k=2)

Temperature

Water triple point 0.01 °C 1 mK

Gallium melting point 29.7646 °C 1.5 mK

Resistance thermometers -40 °C ÷ 50 °C 15 mK

Liguid-in-glass

thermometers

-20 °C ÷ 50 °C 70 mK

Thermographs -20 °C ÷ 0 °C

0 °C ÷ 50 °C

0.3 °C

0.2 °C

Relative humidity 10 % ÷ 95 % 3 %

Air pressure 600 hPa ÷ 1200 hPa 5.4·10-5·p + 5 Pa

Air quality quantities

CO concentration 0 -15 ppmv 0.07 ppm + 0.016 · cCO

SO2 concentration 0 - 500 ppbv 0.8 ppb + 0.021· cSO2

NO concentration 0 - 500 ppbv 0.9 ppb + 0.031· cNO

NO2 concentration 0 - 500 ppbv 1.5 ppb + 0.02 · cNO2

O3 concentration 0 - 500 ppbv 2.6 ppb + 0.024 · cO3

ENVIRONMENTAL AGENGY

OF THE REPUBLIC OF SLOVENIA

WHO

Bureau of MeteorologyGPO Box 1289

Melbourne VIC 3001Australia

Phone +03 9669 4000Fax +03 9669 4699

j.gorman@bom.gov.au

WHO

PRESSURE

WHO

WHO

WHO

Domain Type of standard Type Manufacturer Range U (k=2)95%

Temperature

ITS-90 fixed points Hg, H2O, Ga, In Isotech -38 – 156oC 20 mK

Pressure Dead Weight Tester Gas piston gauge

Ruska 500 – 1100 hPa

2 Pa

Humidity Dew Point Hygrometer

Chilled mirror Eastern General

DP -70 -+40 0.15oC DP

WHO

Météo-FranceDSO/LM

7 Rue Teisserenc de Bort78195 TRAPPES France

Phone +33130136350Fax +33130136020

WHO

HUMIDITY 11 % : LiCl 33 % : MgCl 54 % : N2O6Mg 75 % : NaCl 95 % : K2SO4

Uncertainty: 2.4 %

WHO

2 temperature benchHumidity generation with a circulating bench called “2 temperature bench”

From -50°C to +50°C From 0% to 99% Uncertainty 1.6 %.U

WHO

PRESSURE

range 500 to 1060 hPa Uncertainty: 8.8 + 5.4.10-5 P Pa.

WHO

TEMPERATURE

-50 à +50°C ASL resistor bridge Uncertainty 0.03 °C

WITH

Set of instruments developed by

Australian Bureau

WITH

THERMOMETER

Instrulab 4312A-15-07 (PT100)

WITH

HYGROMETER

Vaisala HM-70 humidity sensor

WITH

BAROMETER

PTB 220A 3 cells

WITH

NORMALISED BIAS

22

21

21

UU

BBBN

B1 and B2 are respectively the bias (True value – Instrument value)U1 and U2 are the associated expanded uncertainties.

WHAT

-0,15

-0,10

-0,05

0,00

0,05

0,10

0,15

0,20

0,25

0,30

France Australie Slovakia Slovenia

PRESSURE

PRESSURE (hPa)

BIAS (hPa)

WHAT

-4

-3

-2

-1

0

1

2

3

4

0 10 20 30 40 50 60 70 80 90 100

Correction Australie France salt France 2 temp Slovakia Slovenia

HUMIDITY

U (%)BIAS (%)

WHAT

-0.0020

-0.0010

0.0000

0.0010

0.0020

0.0030

0.0040

0.0050

0.0060

0.0070

0.0080

0.0090

-60 -40 -20 0 20 40 60

AUSTRALIA

SLOVAKIA

SLOVENIA

FRANCE

TEMPERATURE

(°C)

BIAS (°C)

CONCLUSION

RIC’s UNCERTAINTIES

  PRESSURE TEMPERATURE HUMIDITY

AUSTRALIA 0.06 0.02 1

SLOVENIA 0.05 0.02 2.4

SLOVAKIA 0.12 0.05 2.6

FRANCE 0.16 0.03 2.5

CONCLUSION

INSTRUMENTS

STABLE

SUITABLE

CONCLUSION

PROCEDURES

AND

METHODS

ARE SUITABLE FOR INTERCOMPARISONS

CONCLUSION

ORGANISED BY RIC

INTERCOMPARISONS

PROMOTED BY WMO

THANKS

jan.danc@shmu.sk

THANKSENVIRONMENTAL AGENGY

OF THE REPUBLIC OF SLOVENIA

THANKS

THE END ?

TO BE CONTINUED…

THANKS FOR YOUR ATTENTION