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Compared performances of SMOS-IC soil moisture and vegetation optical depth retrievals based on Tau-Omega and Two-Stream microwave emission models

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorLI, Xiaojun
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierMilieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
dc.contributor.authorAL-YAARI, Amen
hal.structure.identifierSwiss Federal Institute for Forest, Snow and Landscape Research WSL
hal.structure.identifierGamma Remote Sensing
dc.contributor.authorSCHWANK, M.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierNanjing University of Information Science and Technology [NUIST]
dc.contributor.authorFAN, Lei
hal.structure.identifierLaboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
dc.contributor.authorFRAPPART, Frédéric
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierNicholas School of the Environment
dc.contributor.authorSWENSON, Jennifer
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWIGNERON, Jean-Pierre
dc.date.accessioned2024-04-08T12:06:44Z
dc.date.available2024-04-08T12:06:44Z
dc.date.issued2020
dc.identifier.issn0034-4257
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196423
dc.description.abstractEnSince 2010, SMOS (Soil Moisture and Ocean Salinity) retrievals of surface soil moisture (SM) and vegetation optical depth (VOD) have been produced through the inversion of the so-called Tau-Omega (TO) vegetation emission model. Tau-Omega is a 0th-order solution of the radiative transfer equations that neglects multiple scattering, conversely to 1st -order solutions as Two-Stream (2S). To date, very little is known about the compared retrieval performances of these emission models. Here, we inter-compared (SM, VOD) retrievals using the SMOS-IC algorithm running with the TO and 2S emission models. Retrieval performances obtained from TO and 2S were found to be relatively similar, except that a larger dry bias and a slightly lower SM unbiased RMSD were obtained with 2S and the VOD values of the two models vary over dense vegetation areas, both in terms of magnitude and seasonal variations. Considering this and the enhanced physical background of 2S that allows its implementation as a unified emission model for different applications, our study reveals the high interest of using Two-Stream in global retrieval algorithms at L-band.
dc.language.isoen
dc.publisherElsevier
dc.subjectSMOS-IC
dc.subjecttau-omega
dc.subjectsoil moisture
dc.subject.enmicrowave emission model
dc.subject.entwo-stream
dc.subject.envegetation optical depth
dc.subject.englobal retrievals
dc.subject.enbiomass
dc.subject.enECMWF
dc.subject.enMODIS NDVI
dc.subject.enISMN
dc.title.enCompared performances of SMOS-IC soil moisture and vegetation optical depth retrievals based on Tau-Omega and Two-Stream microwave emission models
dc.typeArticle de revue
dc.identifier.doi10.1016/j.rse.2019.111502
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalRemote Sensing of Environment
bordeaux.page1-16
bordeaux.volume236
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02619460
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02619460v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote%20Sensing%20of%20Environment&rft.date=2020&rft.volume=236&rft.spage=1-16&rft.epage=1-16&rft.eissn=0034-4257&rft.issn=0034-4257&rft.au=LI,%20Xiaojun&AL-YAARI,%20Amen&SCHWANK,%20M.&FAN,%20Lei&FRAPPART,%20Fr%C3%A9d%C3%A9ric&rft.genre=article


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