15th septmeber 2009 chart 0 wafs workshop – paris 2009 met services, hans-rudi sonnabend...

15th Septmeber 2009

Chart 1

WAFS Workshop – Paris 2009MET Services, Hans-Rudi Sonnabend

Application of WAFS Products

Hans-Rudi Sonnabend

Lufthansa System Aeronautics GmbH

On behalf of IATA

15th Septmeber 2009

Chart 2


Agenda

Introduction

Current application of WAFS products

UAD – HiRes Trial

New WAFS Products – New Opportunities

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Introduction

Safety

Passenger Comfort

Environmental Impact

Economic

Other

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Agenda

Introduction


UAD – HiRes Trial


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UAD

Flight plan and fuel calculation

SIGWX as charts and in BUFR code formDispatcher information and crew briefing

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Optimization process is separated in horizontal- and vertical forward optimization


Supported Optimization criteria:

MFT (minimum fuel track)

MTT (minimum time track)

MCT (minimum cost track)

MDT (minimum distance track)

Fixed or user defined tracks (predefined routes, OTS-tracks, route definition etc.)

Free Flight

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Meteorological Data Products – Wind Chart

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Meteorological Data Products – Cross Section

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Meteorological Data Products – Wind Components

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Meteorological Data Products – Icing Probability

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Meteorological Data Products – SIGWX Chart

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Agenda

Introduction


UAD – HiRes Trial


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UAD – HiRes Trial

Proposal for UAD improvement (WAFSOPSG/3 2006)

vertical resolution ― addition of two levels between FL 300 and 400-(12 hPa-levels + maxwind + tropopause)

horizontal resolution ― improvement to 60 km (appr. 0.5 degree)

temporal resolution ― increase to 3 hours or less (11 forecasts)

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Chart 15


UAD – HiRes Trial

HiRes Trial Conclusion:

Thinned GRIB as currently used, does lose details of the original forecast

A horizontal resolution of 0.625 degree does not have significant different results than the horizontal resolution of 1.25 degree

A temporal resolution of 3 hours does give some differences although this is not remarkable

(Reason: the trial was performed in a season with low variation in the atmosphere)

Influence of Maxwind and Tropopause level is lower than the statistical standard deviation

HiRes-Data is more consistent

15th Septmeber 2009

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UAD – HiRes Trial

HiRes Trial Recommendation:

Replace Thinned GRIB by a regular grid net

Introduce a 3 hourly temporal resolution

Keep the horizontal resolution by 1.25 degree in longitude and latitude

Add three additional levels between FL240 and FL400 (not included in the project)

15th Septmeber 2009

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Agenda

Introduction


UAD – HiRes Trial


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UAD in GRIB2:

Regular grid net

3 hourly temporal resolution

Horizontal resolution 1.25 x 1.25 degree in longitude and latitude

Add three additional levels between FL240 and FL400

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Advantages of UAD in GRIB2:

No loss of accuracy by thinning the grid

Improved description of rapid changes in the atmosphere

Improved forecast in the jet stream level band and for drift down

No changes in the weather products for dispatcher and pilots

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Disadvantages of UAD in GRIB2:

Longer distribution time

More storage capacity required

Possible more hardware performance required

Possible longer calculation time for optimization

New data decoder needed

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Additional WAFC gridded forecast:

icing

turbulence

cumulonimbus (CB) clouds

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Icing forecast:

Replacement of the simplified icing probability charts by more precise forecasts

Consideration of potential icing areas in optimistation for ETOPS flights

Once the reliability of the icing forecasts is approved, a reduction of the icing fuel penalties can be requested

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Turbulence and CB forecast:

Improved SIGWX information for dispatcher and pilots

Avoidance option in optimisation possible

Information also useable in EFB

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Turbulence Avoidance:

Passenger comfort

Reduction of turbulence induced incidents with injuries

Reduction of aircraft maintenance

Avoiding turbulence during planning has no significant impact in fuel, costs and flight time,

(Pre-requisit: Forecast is reliable)

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Turbulence Avoidance:

Flying under or over turbulence area

Flying around turbulence area

Additional fuel in the exampel 300 KG (under) resp. 1200 KG (around)

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Thank you for your attention !

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MET Services

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Algorithm to calculate wind component and temperature for a segment


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The upper air data contain the following flight planning relevant information in a grid resolution of 1.25 x 1.25 degree:

hPa 100 Wind, TemperaturehPa 150 Wind, TemperaturehPa 200 Wind, TemperaturehPa 250 Wind, TemperaturehPa 300 Wind, TemperaturehPa 400 Wind, TemperaturehPa 500 Wind, Temperature, rel. HumidityhPa 600 Wind, Temperature, rel. HumidityhPa 700 Wind, Temperature, rel. HumidityhPa 850 Wind, Temperature, rel. Humidity

Tropopause Level Height, Temperature

Maxwind Level Height, Wind

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Chart 35



TO_WPT FROM_WPT Costs

ABC

DEPDEPDEP

212523

AA

EB

5240

CG 45BB

EF

4953

GG

FJ

7379

EE

KH

8475

FF

HI

7067

II

LM

9685

HL 86JM 119KO 117KL 109MQ 115LP 118QDEST 134OP 136PDEST 130

DEP DEST

16

40

19

12

19

J

28

34

I14

17

O33

25

Q30

P32

F24

28

D

E

19

31

G22

A

B

C

2125

23

H

K

35

26L

M18

29

internal worklist

15th septmeber 2009 chart 0 wafs workshop – paris 2009 met services, hans-rudi sonnabend...

Documents

wafs workshop paris

met services

th septmeber

fl400 slide

weather products

probability slide

consistent slide

project slide