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Progress ELDAS “Point” Validation (ELDAS Progress Meeting, 10-11 December 2003, Madrid)

Progress ELDAS “Point” Validation (ELDAS Progress Meeting, 10-11 December 2003, Madrid). Cor Jacobs, Herbert Ter Maat, Eddy Moors. Contents. Tasks Data collection Preliminary validation DWD results (TERRA, 2 months) CarboEurope Sites Scinty Sites Flevopolder ELDORADO and SAFFRAN

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Progress ELDAS “Point” Validation (ELDAS Progress Meeting, 10-11 December 2003, Madrid)

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  1. Progress ELDAS “Point” Validation(ELDAS Progress Meeting, 10-11 December 2003, Madrid) Cor Jacobs, Herbert Ter Maat, Eddy Moors

  2. Contents • Tasks • Data collection • Preliminary validation DWD results (TERRA, 2 months) • CarboEurope Sites • Scinty Sites • Flevopolder • ELDORADO and SAFFRAN • To be solved

  3. “Point” Validation: Tasks • WP4100: Check validity of ELDAS product • is there a relation between model output and reality? • Extra (agreed during 1st progress meeting): radiation • ELDORADO versus SAFFRAN radiation

  4.      CarboEurope Autonomous experiments  PLAP   Scintillometer Experiments, WU BALTEX Validation sites and data collection progress

  5. Model data production for validation

  6. Forest sites • On tall towers • Various fluxes, hardly any soil moisture observations  need moisture indicators (L, a,…) Flux Sites 1: CarboEurope Sites

  7. Net Radiation: CarboEurope Sites / DWD model Albedo?!

  8. Evapotransration: CarboEurope Sites / DWD model Albedo, rs, zo, soil, … ?

  9. P-E: CarboEurope Sites / DWD model

  10. S Soil Moisture Increments and P-E (Normalized)

  11. Soil Moisture Increments and Evaporative Fraction

  12. Further Actions (1): CarboEurope Sites • Complete data collection • Databases 1 ELDAS year • Comparison: timeseries, trends, quality indicators • Normalized fluxes (and gridbox adjustment?) • Moisture indicators (L,a) • Temperature / humidity • Soil moisture increments

  13. Sensible heat flux • Heterogeneous area, average over 1-5 km Flux Sites 2: Scintillometer Sites (WAU) • Latent heat flux: indirect (from surface energy balance)

  14. Scinty’s Flux Sites: H and G (noon)

  15. Cumulatieve Soil Moisture Increment (mm) Scinty’s Flux Sites: L / Soil Moisture Increment (noon) L L Large Scale Irrigation!

  16. Further Actions (2): Scinty Sites • Re-format data • Explore alternatives to compute lE • Comparison: timeseries, trends, quality indicators • Normalized fluxes (and gridbox adjustment?) • Moisture indicators (L,a) • Temperature / humidity • Irrigation data • Soil moisture increments

  17. Agricultural Area • Soil moisture measurements • Many details in space and/or time, but hardly any additional data Soil Moisture Sites: PLAP (Geus), Flevopolder (ESA)

  18. Soil moisture (-5cm): Flevopolder / DWD model (1)

  19. Soil moisture (-5cm): Flevopolder / DWD model (2)

  20. Soil moisture (-5cm): Flevopolder / DWD model (3)

  21. Further Actions (3): Soil Moisture Sites • Re-format data • Include BALTEX data • Comparison: timeseries, trends, quality indicators • Normalized soil moisture (and gridbox adjustment?) • Effect of soil type • Soil moisture in well-defined layers • Soil moisture increments • Effect of drainage? • Estimate P-E?

  22. Radiation schemes comparison

  23. Radiation schemes comparison

  24. Radiation schemes comparison

  25. A simple correlation diagram between ELDORADO and SAFFRAN for 10 July 2003 6:00 GMT Correlation diagram between radiation models

  26. Correlation and slope ELDORADO/SAFFRAN

  27. Validation ELDORADO (Carpentras) longwave shortwave • x axis: model, y-axis: observations

  28. Validation SAFFRAN (Carpentras) longwave shortwave • x axis: model, y-axis: observations

  29. Further Actions (4): Radiation Schemes • Include Hesse (Sarrebourgh CarboEurope site; shortewave only) • Further analyses radiation fields • Think about conclusions

  30. To be solved: defining “reality” • Model surface versus observation space (Gridpoint Adjustment?) • Land cover and characteristics • Soil Type • Irrigation, drainage • Trivial Matters (Define your data!) • Synchronisation • Height/Depth/Layers

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