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SMOS-IC: an alternative SMOS soil moisture and vegetation optical depth product

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierDepartment of Earth Physics and Thermodynamics [Valencia]
dc.contributor.authorFERNANDEZ MORAN, Roberto
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorAL YAARI, Amen
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
hal.structure.identifierCentre National d'Études Spatiales [Toulouse] [CNES]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
hal.structure.identifierInstitut de Recherche pour le Développement [IRD [France-Ouest]]
hal.structure.identifierUniversité Toulouse III - Paul Sabatier [UT3]
dc.contributor.authorMIALON, Arnaud
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
hal.structure.identifierCentre National d'Études Spatiales [Toulouse] [CNES]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
hal.structure.identifierInstitut de Recherche pour le Développement [IRD [France-Ouest]]
hal.structure.identifierUniversité Toulouse III - Paul Sabatier [UT3]
dc.contributor.authorMAHMOODI, Ali
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
hal.structure.identifierCentre National d'Études Spatiales [Toulouse] [CNES]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
hal.structure.identifierInstitut de Recherche pour le Développement [IRD [France-Ouest]]
hal.structure.identifierUniversité Toulouse III - Paul Sabatier [UT3]
dc.contributor.authorAHMAD, Al Bitar
hal.structure.identifierDepartment of Earth and Environmental Sciences [Leuven] [EES]
dc.contributor.authorDE LANNOY, Gabrielle
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
hal.structure.identifierCentre National d'Études Spatiales [Toulouse] [CNES]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
hal.structure.identifierInstitut de Recherche pour le Développement [IRD [France-Ouest]]
hal.structure.identifierUniversité Toulouse III - Paul Sabatier [UT3]
dc.contributor.authorRODRIGUEZ‐FERNANDEZ, Nemesio
hal.structure.identifierDepartment of Earth Physics and Thermodynamics [Valencia]
dc.contributor.authorLOPEZ-BAEZA, Ernesto
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
hal.structure.identifierCentre National d'Études Spatiales [Toulouse] [CNES]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
hal.structure.identifierInstitut de Recherche pour le Développement [IRD [France-Ouest]]
hal.structure.identifierUniversité Toulouse III - Paul Sabatier [UT3]
dc.contributor.authorKERR, Yann H.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWIGNERON, Jean-Pierre
dc.date.accessioned2024-04-08T12:04:48Z
dc.date.available2024-04-08T12:04:48Z
dc.date.issued2017
dc.identifier.issn2072-4292
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196324
dc.description.abstractEnThe main goal of the Soil Moisture and Ocean Salinity (SMOS) mission over land surfaces is the production of global maps of soil moisture (SM) and vegetation optical depth (tau) based on multi-angular brightness temperature (TB) measurements at L-band. The operational SMOS Level 2 and Level 3 soil moisture algorithms account for different surface effects, such as vegetation opacity and soil roughness at 4 km resolution, in order to produce global retrievals of SM and t. In this study, we present an alternative SMOS product that was developed by INRA (Institut National de la Recherche Agronomique) and CESBIO (Centre d'Etudes Spatiales de la BIOsphere). One of the main goals of this SMOS-INRA-CESBIO (SMOS-IC) product is to be as independent as possible from auxiliary data. The SMOS-IC product provides daily SM and t at the global scale and differs from the operational SMOS Level 3 (SMOSL3) product in the treatment of retrievals over heterogeneous pixels. Specifically, SMOS-IC is much simpler and does not account for corrections associated with the antenna pattern and the complex SMOS viewing angle geometry. It considers pixels as homogeneous to avoid uncertainties and errors linked to inconsistent auxiliary datasets which are used to characterize the pixel heterogeneity in the SMOS L3 algorithm. SMOS-IC also differs from the current SMOSL3 product (Version 300, V300) in the values of the effective vegetation scattering albedo (omega) and soil roughness parameters. An inter-comparison is presented in this study based on the use of ECMWF (European Center for Medium range Weather Forecasting) SM outputs and NDVI (Normalized Difference Vegetation Index) from MODIS (Moderate-Resolution Imaging Spectroradiometer). A six-year (2010-2015) inter-comparison of the SMOS products SMOS-IC and SMOSL3 SM (V300) with ECMWF SM yielded higher correlations and lower ubRMSD (unbiased root mean square difference) for SMOS-IC over most of the pixels. In terms of tau, SMOS-IC t was found to be better correlated to MODIS NDVI in most regions of the globe, with the exception of the Amazonian basin and the northern mid-latitudes.
dc.language.isoen
dc.publisherMDPI
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subjecthumidité du sol
dc.subjectsalinité des océans
dc.subjectluminosité
dc.subjecttempérature
dc.subject.enSMOS
dc.subject.enL-band
dc.subject.enlevel 3
dc.subject.enECMWF
dc.subject.enSMOS-IC
dc.subject.ensoil moisture
dc.subject.envegetation optical depth
dc.subject.enMODIS
dc.subject.enNDVI
dc.subject.enluminosity
dc.title.enSMOS-IC: an alternative SMOS soil moisture and vegetation optical depth product
dc.typeArticle de revue
dc.identifier.doi10.3390/rs9050457
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalRemote Sensing
bordeaux.page1-21
bordeaux.volume9
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue5
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01606578
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01606578v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote%20Sensing&rft.date=2017&rft.volume=9&rft.issue=5&rft.spage=1-21&rft.epage=1-21&rft.eissn=2072-4292&rft.issn=2072-4292&rft.au=FERNANDEZ%20MORAN,%20Roberto&AL%20YAARI,%20Amen&MIALON,%20Arnaud&MAHMOODI,%20Ali&AHMAD,%20Al%20Bitar&rft.genre=article


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