Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station

Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station

16 páginas, 9 figuras, 5 tablas.

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Main Authors: Juglea, S., Kerr, Y., Mialon, A., Wigneron, J.P., López-Baeza, E., Cano, Aurelio, Albitar, A., Millán-Scheiding, C., Antolín Tomás, Carmen, Delwart, Steven
Other Authors: Institut national des sciences de l'Univers (France)
Format: artículo biblioteca
Language:English
Published: Copernicus Publications 2010
Subjects:ERS scatterometer, AMSR-E, Parameterization, Scheme, Space, Validation, Inclusion, Retrieval, Products, Hapex,
Online Access:http://hdl.handle.net/10261/32632
http://dx.doi.org/10.13039/501100004617
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spelling dig-cide-es-10261-326322022-04-07T14:29:47Z Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station Juglea, S. Kerr, Y. Mialon, A. Wigneron, J.P. López-Baeza, E. Cano, Aurelio Albitar, A. Millán-Scheiding, C. Antolín Tomás, Carmen Delwart, Steven Institut national des sciences de l'Univers (France) ERS scatterometer AMSR-E Parameterization Scheme Space Validation Inclusion Retrieval Products Hapex 16 páginas, 9 figuras, 5 tablas. The main goal of the SMOS (Soil Moisture and Ocean Salinity) mission is to deliver global fields of surface soil moisture and sea surface salinity using L-band (1.4 GHz) radiometry. Within the context of the Science preparation for SMOS, the Valencia Anchor Station (VAS) experimental site, in Spain, was chosen to be one of the main test sites in Europe for Calibration/Validation (Cal/Val) activities. In this framework, the paper presents an approach consisting in accurately simulating a whole SMOS pixel by representing the spatial and temporal heterogeneity of the soil moisture fields over the wide VAS surface (50x50 km(2)). Ground and meteorological measurements over the area are used as the input of a Soil-Vegetation-Atmosphere-Transfer (SVAT) model, SURFEX (Externalized Surface) - module ISBA (Interactions between Soil-Biosphere-Atmosphere) to simulate the spatial and temporal distribution of surface soil moisture. The calibration as well as the validation of the ISBA model are performed using in situ soil moisture measurements. It is shown that a good consistency is reached when point comparisons between simulated and in situ soil moisture measurements are made. Actually, an important challenge in remote sensing approaches concerns product validation. In order to obtain an representative soil moisture mapping over the Valencia Anchor Station (50x50 km(2) area), a spatialization method is applied. For verification, a comparison between the simulated spatialized soil moisture and remote sensing data from the Advanced Microwave Scanning Radiometer on Earth observing System (AMSR-E) and from the European Remote Sensing Satellites (ERS-SCAT) is performed. Despite the fact that AMSR-E surface soil moisture product is not reproducing accurately the absolute values, it provides trustworthy information on surface soil moisture temporal variability. However, during the vegetation growing season the signal is perturbed. By using the polarization ratio a better agreement is obtained. ERS-SCAT soil moisture products are also used to be compared with the simulated spatialized soil moisture. However, the lack of soil moisture data from the ERS-SCAT sensor over the area (45 observations for one year) prevented capturing the soil moisture variability. The authors wish to thank the European Space Agency (ESA), the Centre National d’Etudes Spatiales (CNES), the Centre National de la Recherche Scientifique – Institut National des Sciences de l’Univers (CNRS- INSU SIC) and the French National Programme TOSCA (Terre, Oc´eans, Surfaces Continentales et Atmosph´ere) for supporting this work. We also wish to thank the NASA National Snow and Ice Data Center (NSIDC) for providing AMSR-E data as well as the Institute for Photogrammetry and Remote Sensing, Vienna University of Technology, Vienna, Austria for providing the ERS-SCAT data. We thank also the Centre National de Recherches Météorologiques and Jean Christophe Calvet (CNRM) - Météo-France for the SURFEX model. The authors wish to thank also the Spanish Agency for Meteorology (AEMet) and to the Jucar River Basin Authority (CHJ) for the meteorological data. Edited by: N. Verhoest The publication of this article is financed by CNRS-INSU. Peer reviewed 2011-02-21T16:33:49Z 2011-02-21T16:33:49Z 2010 artículo http://purl.org/coar/resource_type/c_6501 Hydrology and Earth System Sciences 14(5): 831-846 (2010) 1027-5606 http://hdl.handle.net/10261/32632 10.5194/hess-14-831-2010 1607-7938 http://dx.doi.org/10.13039/501100004617 en Publisher’s version http://dx.doi.org/10.5194/hess-14-831-2010 Sí open Copernicus Publications
institution CIDE ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-cide-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del CIDE España
language English
topic ERS scatterometer
AMSR-E
Parameterization
Scheme
Space
Validation
Inclusion
Retrieval
Products
Hapex
ERS scatterometer
AMSR-E
Parameterization
Scheme
Space
Validation
Inclusion
Retrieval
Products
Hapex
spellingShingle ERS scatterometer
AMSR-E
Parameterization
Scheme
Space
Validation
Inclusion
Retrieval
Products
Hapex
ERS scatterometer
AMSR-E
Parameterization
Scheme
Space
Validation
Inclusion
Retrieval
Products
Hapex
Juglea, S.
Kerr, Y.
Mialon, A.
Wigneron, J.P.
López-Baeza, E.
Cano, Aurelio
Albitar, A.
Millán-Scheiding, C.
Antolín Tomás, Carmen
Delwart, Steven
Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station
description 16 páginas, 9 figuras, 5 tablas.
author2 Institut national des sciences de l'Univers (France)
author_facet Institut national des sciences de l'Univers (France)
Juglea, S.
Kerr, Y.
Mialon, A.
Wigneron, J.P.
López-Baeza, E.
Cano, Aurelio
Albitar, A.
Millán-Scheiding, C.
Antolín Tomás, Carmen
Delwart, Steven
format artículo
topic_facet ERS scatterometer
AMSR-E
Parameterization
Scheme
Space
Validation
Inclusion
Retrieval
Products
Hapex
author Juglea, S.
Kerr, Y.
Mialon, A.
Wigneron, J.P.
López-Baeza, E.
Cano, Aurelio
Albitar, A.
Millán-Scheiding, C.
Antolín Tomás, Carmen
Delwart, Steven
author_sort Juglea, S.
title Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station
title_short Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station
title_full Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station
title_fullStr Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station
title_full_unstemmed Modelling soil moisture at SMOS scale by use of a SVAT model over the Valencia Anchor Station
title_sort modelling soil moisture at smos scale by use of a svat model over the valencia anchor station
publisher Copernicus Publications
publishDate 2010
url http://hdl.handle.net/10261/32632
http://dx.doi.org/10.13039/501100004617
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AT delwartsteven modellingsoilmoistureatsmosscalebyuseofasvatmodeloverthevalenciaanchorstation
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