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Published byLee Armstrong Modified over 9 years ago
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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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Contents Tasks Data collection Preliminary validation DWD results (TERRA, 2 months) CarboEurope Sites Scinty Sites Flevopolder ELDORADO and SAFFRAN To be solved
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“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
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Validation sites and data collection progress CarboEurope Autonomous experiments PLAP Scintillometer Experiments, WU BALTEX
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Model data production for validation
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Flux Sites 1: CarboEurope Sites Forest sites On tall towers Various fluxes, hardly any soil moisture observations need moisture indicators ( , ,…)
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Net Radiation: CarboEurope Sites / DWD model Albedo?!
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Evapotransration: CarboEurope Sites / DWD model Albedo, r s, z o, soil, … ?
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P-E: CarboEurope Sites / DWD model
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Soil Moisture Increments and P-E (Normalized)
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Soil Moisture Increments and Evaporative Fraction
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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
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Flux Sites 2: Scintillometer Sites (WAU) Sensible heat flux Heterogeneous area, average over 1-5 km Latent heat flux: indirect (from surface energy balance)
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Scinty’s Flux Sites: H and G (noon)
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Large Scale Irrigation! Scinty’s Flux Sites: Soil Moisture Increment (noon) Cumulatieve Soil Moisture Increment (mm)
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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
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Soil Moisture Sites: PLAP (Geus), Flevopolder (ESA) Agricultural Area Soil moisture measurements Many details in space and/or time, but hardly any additional data
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Soil moisture (-5cm): Flevopolder / DWD model (1)
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Soil moisture (-5cm): Flevopolder / DWD model (2)
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Soil moisture (-5cm): Flevopolder / DWD model (3)
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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?
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Radiation schemes comparison
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Correlation diagram between radiation models A simple correlation diagram between ELDORADO and SAFFRAN for 10 July 2003 6:00 GMT
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Correlation and slope ELDORADO/SAFFRAN
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Validation ELDORADO (Carpentras) longwaveshortwave x axis: model, y-axis: observations
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Validation SAFFRAN (Carpentras) longwaveshortwave x axis: model, y-axis: observations
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Further Actions (4): Radiation Schemes Include Hesse (Sarrebourgh CarboEurope site; shortewave only) Further analyses radiation fields Think about conclusions
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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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