1. EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS 15-18 November 2004, Geneva, Switzerland ZOLTÁN DUNKEL OMSZ -Hungarian Meteorological Service H-1525 Budapest POB 38, dunkel.z@met.hu Possibilities of using satellite information in agrometeorology; advantages and limitations

2. EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland AGROMETEOROLOGY MICROCLIMATE plant stand-canopy relief-configuration of terrain METEOROLOGICAL HAZARDS forest fire drought pests and diseases CROP PRODUCTION BIOMASS AND YIELD ESTIMATION plant-soil-weather model production model

3. The possible us of remote sensing technique parametrisation and validation of agrometeorological models yield estimation fluxes: radiation, sensible and latent heat evapotranspiration climate change detection climate impact investigation phenological observation EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland

4. Limitation: no or partly covering image cloud cover no on time information low frequency resolution the size of object too small

5. EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland 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)

6. Application of MSG Simulated values of the Thermal Flux (outgoing long wave radiation), emitted Thermal Flux in W/m 2 units EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland

7. Sea surface temperature obtained from METEOSAT data

8. Evapotranspiration data obtained from METEOSAT data EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland

9. Radiation map for Hungary, METEOSAT A. Rimóczy-Paál, J. Kerény

10. EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland Vegetation index map for Hungary A. Rimóczy-Paál, J. Kerény

11. EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland Yield estimation trial, using statistical methods A. Rimóczy-Paál

12. EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland NDVI map using NOAA/AVHRR images after atmospheric correction

13. Yield estimation, wheat, differences per counties EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland

14. Daily evapotranspiration calculation scheme ET = R n + A + B·(T A – T C ) EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland

15. We need a ground-truth -continuous reference station -expeditions

16. Surface temperature values along the scanning route EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland

17. LST, NDVI, ET 01 July 1998 LST:290 - 310 K NDVI:0,1 - 0,7 ET: 5,5 - 7,9 mm/day

18. Comparison of the measured, calculated, and satellite born daily ET values EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland

19. Pan AAntalSatelliteA-AntalA-Satellite mm/daymm/daymm/day%% 1998.06.035,75,78,1100140139 1998.06.106,16,17,9100128130 1998.07.014,13,84,992120129 1998.07.238,38,27,9989697 1998.07.2513,212,912,6989697 1998.07.291,21,21,8102141137 1998.07.316,46,58,1101124123 1998.08.016,36,57,8102123120 1998.08.027,67,78,699111111 1998.08.0415,15,16,3100108108 1998.08.075,95,98,6101147145 1998.08.098,17,18,588106119 1998.08.109,28,19,08898112 1998.08.126,86,98,5101124122 1998.08.138,17,88,296101105

20. EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland 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:

21. EXPERT MEETING ON WEATHER, CLIMATE AND FARMERS WMO/COST718 15-18 November 2004, Geneva, Switzerland Many thanks for your attention!