Validation (WP 4) Eddy Moors, Herbert ter Maat, Cor Jacobs

ELDAS first progress meeting Validation experiments Experiment Work- package PeriodAreaLand surface scheme Forcing data sources Validation data sources GSWP validation 4100variousVarious points and regions within Europe allOperational synops + precip/radiat/ satellite data Detailed physical model output Microwave soil moisture annual cycle TesselOperational synops + precip/radiat/ satellite data SSM/I Comparison to GLDAS annual cycle US river basins TesselGLDAS data Rhone basin climatology yrRhone basin AllRhone climatology Rhone basin discharge

ELDAS first progress meeting WP 4100 GSWP Validation Validate ELDAS products, in particular: soil moisture and flux data in Europe river runoff

ELDAS first progress meeting Validation GSWP Quality of input data Local scale measurements Regional scale measurements

ELDAS first progress meeting Variables to be analyzed (GSWP validation) Temporal scale: total soil moisture content total evaporation (E) Evaporative fraction (LE : (LE+H)) Bowen ratio (H : LE) Evaporation energy ratio (LE : R net ) Evaporation precipitation ratio (E : P) Relative soil storage capacity ( ). Spatial scale (auto-correlation, Vinnikov et al., 1996): soil moisture, precipitation and evaporation

ELDAS first progress meeting Validation data available

ELDAS first progress meeting GSWP - Data: 1 Oct – 31 Dec CarboEurope sites Scintillometer experiments by Department of Meteorology and Air Quality, Wageningen University Danish Pesticide Leaching Assessment Programma (PLAP) BALTEX (BALTic sea EXperiment) Dr. Claudia Notarnicola, Dip. Interateneo di Fisica, Via Amendola 173, I Bari, ITALY Maurice Borgeaud et al., 2002, ESA

ELDAS first progress meeting CarboEurope Autonomous experiments PLAP Scintillometer Experiments, WU BALTEX

ELDAS first progress meeting Model data required

ELDAS first progress meeting Area dependent parameters (Model data) Vegetation type (PELCOM classification) LAI and/or coverage Soil type (FAO soil map) Rooting depth Volumetric soil moisture content at wilting point for each layer (m 3 /m 3 ) Volumetric soil moisture content at field capacity for each layer (m 3 /m 3 ) Vertical discretisation (m)

ELDAS first progress meeting Temporal data (Model data) For all tiles within the pixel: –mean, –std deviation (over the requested time interval), –analysis error, –absolute error

ELDAS first progress meeting Temporal data (Model data) Meteorological output fields near the surface (i.e. the lowest modelling height, please indicate this height) in ASCII-format Every 3 hours: Net radiation (W m -2 ) Global radiation (W m -2 ) Shortwave outgoing radiation (W m -2 ) Longwave incoming radiation (W m -2 ) Longwave outgoing radiation (W m -2 ) Latent heat flux (W m -2 ) Sensible heat flux (W m -2 ) Soil heat flux (W m -2 ) Air temperature (K) Air humidity (g kg -1 ) Windspeed (m s -1 ) Surface resistance (s m -1 )

ELDAS first progress meeting Temporal data (Model data) Hydrological output fields in ASCII-format Every 6 hours: Evaporation (mm) Potential evapotranspiration (mm) Precipitation (mm) Net precipitation (mm) Runoff (mm) Drainage (mm) Water table depths (m) Total soil moisture (mm) Soil moisture in rooting zone (mm) Volumetric soil moisture content at different depths (m 3 / m 3, max. 5 layers) Soil temperature at different depths (K, max. 5 layers)

ELDAS first progress meeting Temporal data (Model data) Hydrological output fields in ASCII-format Every day: Evaporation (mm) Potential evapotranspiration (mm) Precipitation (mm) Net precipitation (mm) Runoff (mm) Drainage (mm) Water table depths (m) Total soil moisture (mm) Soil moisture in rooting zone (mm)

ELDAS first progress meeting Spatial data (Model data) Spatial data covering the complete model domain (15 W, 38 E, 35 N, 72 N, output for each pixel and NOT for each tile in GRIB -format): Every month: Precipitation (mm) Evaporation (mm) Total soil moisture (mm) Soil moisture in rooting zone (mm) Soil moisture for the first 2 layers (mm)

ELDAS first progress meeting Time table of the validation experiments (a) Area PeriodData preparation Validation activitiesRemark Data available ValidationStartEnd Various sites CarboEuroflux network Jan 2002Jan 2003Dec 2003More sites will become available Flevopolder, Netherlands, ESA2000 Jun 2002Jan 2003Dec 2003Data available Bari, ItalyJan, Apr, 2000 Jun 2002Jan 2003Dec 2003Data available Danish Pesticide Leaching Assessment Programma (PLAP) 2000 Jan-Mar 2003 Mar 2003Dec 2003 Spain Scintillometer experiments by Department of Meteorology and Air Quality, WUR 2000 Jan-Mar 2003 Mar 2003Dec 2003 Estonia Jun 2002Jan 2003Dec 2003Data available

ELDAS first progress meeting Time table of the validation experiments (b) Area PeriodData preparation Validation activitiesRemark Data available ValidationStartEnd Seine, France2000 Jun 2002Jan 2003Dec 2003 Garonne, France 2000 Jun 2002Jan 2003Dec 2003 Rhone, France Jan 2002Jan 2003Dec 2003Data are available South Europe Summer 2000 Jul 2002Jan 2004Dec 2004 SGP97, USJuly 1997 Jan 2002Jul 2002Dec 2002 Murex, France ?Jan 2002Jul 2002Dec 2002 McKenzie basin??Jul 2002Jan 2003Dec 2003Will be prepared by GLDAS, in concordance with KNMI Mississippi basin ??Jul 2002Jan 2003Dec 2003Will be prepared by GLDAS, in concordance with KNMI Europe?Oct 2000, Apr-Jun 2003 Jan 2004Dec 2004Will be prepared by GLDAS, in concordance with KNMI

ELDAS first progress meeting Questions related to the validation Time schedule? Accuracy? Validation: daily/3hourly precipitation - radiation - heating rates - observations radiation - “simple” equation Discharge (Runoff) data? (How) can we use the background error? Zero hypothesis: When do we accept/reject the results? < 4% soil moisture volume?