Paper Info
Title
On the assimilation of multispectral remote sensing data in a SVAT model
Abstract
Soil Vegetation Atmosphere Transfer(SVAT) models have been used for a long time to provide realistic descriptions of surface processes in order to simulate energy and water fluxes at the interface soil-vegetation-atmosphere. The initialization of biophysical variables of slow temporal variation, mainly root zone soil water content (w2) and biomass, has an operational interest in atmospheric and hydrological models since they condition the surface fluxes. Therefore their correct initialization constitutes an important issue for short to medium term meteorological modelling. In this paper a first approach to assimilate remote sensing data in the Interaction Soil Biosphere Atmosphere SVAT model of Meteo-France, modified to account for the carbon dioxide concentration (ISBA-A-gs) [J.-C Calvet, 1998], is addressed in order to describe the slow temporal evolution of w2 and the biomass. The experimental set-up at the south of Toulouse, SMOSREX (Surface Monitoring of the Soil Reservoir Experiment), is providing continuous data of meteorological forcing, energy fluxes, soil water content, soil temperature profiles and vegetation biomass. Moreover the addition in 2003 of a new very precise radiometer (LEWIS) is supplying radiometric measurements in L-band, reinforced by measurements in the infrared and solar domain by respectively an infrared radiometer and a reflectance-meter. All these continuous measurements will permit to test the assimilation techniques of multi-spectral remote sensing data in the surface models over fallow and bare soil with the goal of analyzing the soil water content in the root zone and the biomass.
Year
DOI
Venue
2004
10.1109/IGARSS.2004.1368663
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Keywords
Field
DocType
atmospheric boundary layer,atmospheric techniques,data assimilation,meteorology,moisture,radiometry,remote sensing,soil,AD 2003,ISBA-A-gs,Interaction Soil Biosphere Atmosphere,L-band,LEWIS radiometer,Meteo-France,SMOSREX,SVAT model,Soil Vegetation Atmosphere Transfer model,Surface Monitoring of the Soil Reservoir Experiment,bare soil,biophysical variable,carbon dioxide concentration,energy/water flux,infrared radiometer,infrared/solar measurement,meteorological forcing,multispectral remote sensing data assimilation,reflectance-meter,root zone soil water content,soil temperature profile,soil-vegetation-atmosphere interface,southern Toulouse,surface processes,temporal variation,vegetation biomass
Atmosphere,Vegetation,Computer science,Remote sensing,Radiometry,Multispectral pattern recognition,Data assimilation,Planetary boundary layer,Soil water,Radiometer
Conference
Volume
ISSN
ISBN
2
2153-6996
0-7803-8742-2
Citations 
PageRank 
References 
0
0.34
1
Authors
3
Name
Order
Citations
PageRank
Joaquín Munoz Sabater1184.66
Jean-Christophe Calvet215023.74
Patricia de Rosnay317523.79