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Radar altimetry backscattering signatures at Ka, Ku, C, and S bands over West Africa

dc.rights.licenseopenen_US
hal.structure.identifierGéosciences Environnement Toulouse [GET]
hal.structure.identifierLaboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
dc.contributor.authorFRAPPART, Frédéric
hal.structure.identifierGéosciences Environnement Toulouse [GET]
hal.structure.identifierONERA - The French Aerospace Lab [Toulouse]
dc.contributor.authorFATRAS, C.
hal.structure.identifierGéosciences Environnement Toulouse [GET]
dc.contributor.authorMOUGIN, Éric
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMARIEU, Vincent
hal.structure.identifierUniversité des Sciences, des Techniques et des Technologies de Bamako [USTTB]
dc.contributor.authorDIEPKILÉ, A.T.
hal.structure.identifierLaboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
dc.contributor.authorBLAREL, F.
hal.structure.identifierONERA - The French Aerospace Lab [Toulouse]
dc.contributor.authorBORDERIES, P.
dc.date.accessioned2024-05-15T13:24:37Z
dc.date.available2024-05-15T13:24:37Z
dc.date.issued2015
dc.identifier.issn1474-7065en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/199891
dc.description.abstractEnThis study presents a comprehensive comparison of radar altimetry signatures at Ka-, Ku-, C-, and S-bands using SARAL, ENVISAT and Jason-2 data over the major bioclimatic zones, soil and vegetation types encountered in West-Africa, with an emphasis on the new information at Ka-band provided by the recently launched SARAL–Altika mission. Spatio-temporal variations of the radar altimetry responses were related to changes in surface roughness, land cover and soil wetness. Analysis of time series of backscattering coefficients along the West African bioclimatic gradient shows that radar echoes at nadir incidence are well correlated to soil moisture in semi-arid savannah environments. Radar altimeters are able to detect the presence of water even under a dense canopy cover at all frequencies. But only measurements at Ka-band are able to penetrate underneath the canopy of non-inundated tropical evergreen forests.
dc.language.isoENen_US
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enRADAR ALTIMETRY
dc.subject.enSURFACE PROPERTIES
dc.subject.enWEST AFRICA
dc.subject.enBACKSCATTERING
dc.title.enRadar altimetry backscattering signatures at Ka, Ku, C, and S bands over West Africa
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.pce.2015.05.001en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph]en_US
dc.subject.halSciences de l'environnement/Ingénierie de l'environnementen_US
bordeaux.journalPhysics and Chemistry of the Earth. Parts A/B/Cen_US
bordeaux.page96-110en_US
bordeaux.volume83-84en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamMETHYSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-01414511
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physics%20and%20Chemistry%20of%20the%20Earth.%20Parts%20A/B/C&rft.date=2015&rft.volume=83-84&rft.spage=96-110&rft.epage=96-110&rft.eissn=1474-7065&rft.issn=1474-7065&rft.au=FRAPPART,%20Fr%C3%A9d%C3%A9ric&FATRAS,%20C.&MOUGIN,%20%C3%89ric&MARIEU,%20Vincent&DIEPKIL%C3%89,%20A.T.&rft.genre=article


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