EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS 15-18 November 2004, Geneva, Switzerland ZOLTÁN...

EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS

15-18 November 2004, Geneva, Switzerland

ZOLTÁN DUNKEL

OMSZ -Hungarian Meteorological ServiceH-1525 Budapest POB 38, [email protected]

Possibilities of using satellite

information in agrometeorology;

advantages and limitations


WMO/COST718 15-18 November 2004, Geneva, Switzerland

AGROMETEOROLOGY

MICROCLIMATEplant stand-canopy relief-configuration of

terrain

METEOROLOGICAL HAZARDSforest fire

droughtpests and diseases

CROP PRODUCTIONBIOMASS AND YIELD ESTIMATION

plant-soil-weather modelproduction model

The possible us of remote sensing

technique parametrisation and validation of

agrometeorological modelsyield estimationfluxes: radiation, sensible and latent heatevapotranspiration

climate change detectionclimate impact investigationphenological observation

EXPERT MEETING ON WEATHER, CLIMATE AND FARMERSWMO/COST718 15-18 November 2004, Geneva, Switzerland



Limitation:no or partly covering image

cloud coverno on time information

low frequencyresolution

the size of object too small



MARS Mission

Ensure Internal European Commission technical competence in the field of administration and control of area based aid declarations and rural zones (MARS-PAC project - 1992)

Independent and timely production estimates for the major European crops (MARS-STAT project - 1989)

Adequate warnings on food security for world-wide regions at risk (MARS food-Aid project - 2001)

Application of MSG

Simulated values of the Thermal Flux (outgoing long wave radiation),

emitted Thermal Flux in W/m2 units



Sea surface temperature obtained from METEOSAT data

Evapotranspiration data obtained from METEOSAT data




Radiation map for Hungary, METEOSAT

A. Rimóczy-Paál, J. Kerény



Vegetation index map for HungaryA. Rimóczy-Paál, J. Kerény



Yield estimation trial, using statistical methodsA. Rimóczy-Paál



NDVI map using NOAA/AVHRR images

after atmospheric correction

Búza 2000

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

Megyék

Rel

atív

hib

a analóg 4

analóg 6

regr 4

regr 6

Yield estimation, wheat, differences per counties


Daily evapotranspiration calculation scheme

ET = Rn + A + B·(TA – TC)




We need a ground-truth-continuous reference

station-expeditions

Surface temperature values along the scanning route




LST, NDVI, ET01 July 1998LST: 290 - 310 KNDVI: 0,1 - 0,7ET: 5,5 - 7,9 mm/day

Comparison of the measured, calculated,

and satellite born daily ET values




Pan A Antal Satellite A-Antal A-Satellite

mm/day mm/day mm/day %% %

1998.06.03 5,7 5,7 8,1 100 140 1391998.06.10 6,1 6,1 7,9 100 128 1301998.07.01 4,1 3,8 4,9 92 120 1291998.07.23 8,3 8,2 7,9 98 96 971998.07.25 13,2 12,9 12,6 98 96 971998.07.29 1,2 1,2 1,8 102 141 1371998.07.31 6,4 6,5 8,1 101 124 1231998.08.01 6,3 6,5 7,8 102 123 1201998.08.02 7,6 7,7 8,6 99 111 1111998.08.04 15, 15, 16,3 100 108 1081998.08.07 5,9 5,9 8,6 101 147 1451998.08.09 8,1 7,1 8,5 88 106 1191998.08.10 9,2 8,1 9,0 88 98 1121998.08.12 6,8 6,9 8,5 101 124 1221998.08.13 8,1 7,8 8,2 96 101 105



Limitations:- real time data access, no problem

- frequency, no problem, MSG very frequent, every 1/4

hour

- resolution, yes, sometimes too rough

and what about the phenological observation?

CONCLUDING:



Many thanks for your attention!

EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS 15-18 November 2004, Geneva, Switzerland ZOLTÁN...

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