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

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Presentation on theme: "Progress ELDAS “Point” Validation (ELDAS Progress Meeting, 10-11 December 2003, Madrid) Cor Jacobs, Herbert Ter Maat, Eddy Moors."— Presentation transcript:

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 1 st progress meeting): radiation ELDORADO versus SAFFRAN radiation

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

5 Model data production for validation

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

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

8 Evapotransration: CarboEurope Sites / DWD model Albedo, r s, z o, soil, … ?

9 P-E: CarboEurope Sites / DWD model

10  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 ( ,  ) Temperature / humidity Soil moisture increments

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

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

15 Large Scale Irrigation! Scinty’s Flux Sites:  Soil Moisture Increment (noon)   Cumulatieve Soil Moisture Increment (mm)

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

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

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

24

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

26 Correlation and slope ELDORADO/SAFFRAN

27 Validation ELDORADO (Carpentras) longwaveshortwave x axis: model, y-axis: observations

28 Validation SAFFRAN (Carpentras) longwaveshortwave 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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