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Analyzing the impact of using the SRP (Simplified roughness parameterization) method on soil moisture retrieval over different regions of the globe

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.identifierUniversitat de València = University of Valencia [UV]
dc.contributor.authorLOPEZ-BAEZA, Ernesto
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorAL-YAARI, Amen
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorBIRCHER, Simone
hal.structure.identifierUniversitat de València = University of Valencia [UV]
dc.contributor.authorCOLL-PAJARON, Amparo
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
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.authorRICHAUME, Philippe
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorKERR, Yann H.
dc.date.accessioned2024-04-08T11:58:21Z
dc.date.available2024-04-08T11:58:21Z
dc.date.issued2015
dc.date.conference2015-07-26
dc.identifier.isbn978-1-4799-799-5
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195923
dc.description.abstractEnThis paper focuses on a new approach to account for soil roughness effects in the retrieval of soil moisture (SM) at L-band in the framework of the SMOS (Soil Moisture and Ocean Salinity) mission: the Simplified Roughness Parameterization (SRP). While the classical retrieval approach considers SM and τ nad (vegetation optical depth) as retrieved parameters, this approach is based on the retrieval of SM and the TR parameter combining τ nad and soil roughness (TR τ nad + Hr /2). Different roughness parameterizations were tested to find the best correlation (R), bias and unbiased RMSE (ubRMSE) when comparing homogeneous retrievals of SM and in situ SM measurements carried out at the VAS (Valencia Anchor Station) vineyard field. The highest R (0.68) and lowest ubRMSE (0.056 m3 m-3) were found using the SRP method. Using the SMOS observations comparisons against several SM networks were also made: AACES, SCAN, watersheds and SMOSMANIA. SM was retrieved over all these stations. The SRP and another similar approach (SRP2) improved the averaged ubRMSE, while the SRP2 method leaded to higher correlation values (R). A global underestimation of SM was noticed, which may be linked to the differences in the sampling depths of the L-band observations ( ~ 0-3 cm for both Elbara-II and SMOS) and of the in situ measurements ( ~ 0-5 cm).
dc.language.isoen
dc.publisherIEEE Geoscience and Remote Sensing Society
dc.publisher.locationPiscataway (united states)
dc.source.titleIEEE International Geoscience and Remote Sensing Symposium Proceedings
dc.subjectsoil moisture
dc.subject.enL-band
dc.subject.enmathematical model
dc.subject.enmicrowave radiometry
dc.subject.ensoil measurements
dc.subject.envegetation mapping
dc.title.enAnalyzing the impact of using the SRP (Simplified roughness parameterization) method on soil moisture retrieval over different regions of the globe
dc.typeCommunication dans un congrès
dc.identifier.doi10.1109/IGARSS.2015.7327001
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.titleGeoscience and Remote Sensing Symposium (IGARSS), 2015 IEEE International
bordeaux.countryIT
bordeaux.title.proceedingIEEE International Geoscience and Remote Sensing Symposium Proceedings
bordeaux.conference.cityMilan
bordeaux.peerReviewedoui
hal.identifierhal-02743407
hal.version1
hal.invitednon
hal.conference.end2015-07-31
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02743407v1
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=2015&rft.au=FERNANDEZ-MORAN,%20Roberto&WIGNERON,%20Jean-Pierre&LOPEZ-BAEZA,%20Ernesto&AL-YAARI,%20Amen&BIRCHER,%20Simone&rft.isbn=978-1-4799-799-5&rft.genre=unknown


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