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Calibrating the effective scattering albedo in the SMOS algorithm: some first results

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierUniversitat de València = University of Valencia [UV]
dc.contributor.authorFERNANDEZ-MORAN, Roberto
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWIGNERON, Jean-Pierre
hal.structure.identifierNASA Goddard Space Flight Center [GSFC]
dc.contributor.authorDE LANNOY, Gabrielle
hal.structure.identifierUniversitat de València = University of Valencia [UV]
dc.contributor.authorLOPEZ-BAEZA, Ernesto
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorMIALON, Arnaud
hal.structure.identifierInstitut national des sciences de l'Univers [INSU - CNRS]
dc.contributor.authorMAHMOODI, Ali
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorPARRENS, Marie
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorAHMAD, Al Bitar
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorRICHAUME, Philippe
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorKERR, Yann H.
dc.date.accessioned2024-04-08T11:59:04Z
dc.date.available2024-04-08T11:59:04Z
dc.date.issued2016
dc.date.conference2016-07-10
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195972
dc.description.abstractEnThis study focuses on the calibration of the effective scattering albedo (ω) of vegetation in the soil moisture (SM) retrieval at L-Band. Currently, in the SMOS Level 2 and 3 algorithms, the value of ω is set to 0 for low vegetation and ∼ 0.06 – 0.08 for forests. Different parameterizations of vegetation (in terms of ω values) were tested in this study. The possibility of combining soil roughness and vegetation contributions as a single parameter (“combined” method) leads to an important simplification in the algorithm and was also evaluated here. Following these assumptions, retrieved values of SMOS SM were compared with SM data measured over many in situ sites worldwide from the International Soil Moisture Network. These validation sites were classified using the International Geosphere-Biosphere Programme (IGBP) classification scheme. In situ SM measurements and SM retrievals were compared, and statistical scores were computed. The optimum albedo configuration was then found for each class of the IGBP landcover classification. Preliminary results yield values of albedo between 0.07 to 0.12 under the assumption of homogeneous pixels.
dc.language.isoen
dc.publisherIEEE
dc.source.titleIEEE International Geoscience and Remote Sensing Symposium Proceedings
dc.subjectSMOS
dc.subjectsoil moisture
dc.subject.enSMAP
dc.subject.enscattering albedo
dc.subject.enL-MEB model
dc.title.enCalibrating the effective scattering albedo in the SMOS algorithm: some first results
dc.typeCommunication dans un congrès
dc.identifier.doi10.1109/IGARSS.2016.7729209
dc.subject.halSciences de l'ingénieur [physics]/Traitement du signal et de l'image
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.conference.titleIGARSS 2016 Advancing the understanding of our living planet
bordeaux.countryCN
bordeaux.title.proceedingIEEE International Geoscience and Remote Sensing Symposium Proceedings
bordeaux.conference.cityPékin
bordeaux.peerReviewednon
hal.identifierhal-02741253
hal.version1
hal.invitednon
hal.conference.organizerIEEE Geoscience and Remote Sensing Society (GRSS). USA.
hal.conference.end2016-07-15
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02741253v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=IEEE%20International%20Geoscience%20and%20Remote%20Sensing%20Symposium%20Proceedings&rft.date=2016&rft.au=FERNANDEZ-MORAN,%20Roberto&WIGNERON,%20Jean-Pierre&DE%20LANNOY,%20Gabrielle&LOPEZ-BAEZA,%20Ernesto&MIALON,%20Arnaud&rft.genre=unknown


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