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Calibration and evaluation of an optical-passive microwave approach to estimate soil moisture over several land cover types

hal.structure.identifierUniversidad de Chile = University of Chile [Santiago] [UCHILE]
dc.contributor.authorSANTAMARÍA-ARTIGAS, Andrès
hal.structure.identifierUniversidad de Chile = University of Chile [Santiago] [UCHILE]
dc.contributor.authorMATTAR, Cristian
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWIGNERON, Jean-Pierre
hal.structure.identifierUniversidad de Chile = University of Chile [Santiago] [UCHILE]
dc.contributor.authorOLIVERA-GUERRA, Luis Enrique
hal.structure.identifierUniversidad de Chile = University of Chile [Santiago] [UCHILE]
dc.contributor.authorDURAN-ALARCON, Claudio
dc.date.accessioned2024-04-08T11:59:46Z
dc.date.available2024-04-08T11:59:46Z
dc.date.issued2015
dc.date.conference2015-07-26
dc.identifier.isbn978-1-4799-7929-5
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196022
dc.description.abstractEnSoil moisture is one of the biosphere's most essential climatic variables. However, its periodical monitoring at regional scales using in-situ measurements is complex. In this context, L-band microwaves observations from passive remote sensors appear as an important tool for the periodical estimation of soil moisture at regional scales. In this work, a semi-empirical model to estimate soil moisture values from L-band observation was calibrated and evaluated over several land cover classes in a heterogeneous study area in Chile. For this, 3 years (2010, 2011 and 2012) of brightness temperature data from SMOS, soil temperature and volumetric water content from ERA-Interim, and NDVI from MODIS were used. Results showed an increase in the average r2 when a vegetation index was used in the calibration of the approach. These increases ranged from a 3% for Crops, to a 49% for Closed Shrublands. The ubRMSD showed a decrease in its value of up to 1% m3/m3 for Woodlands, Open Shrublands and Woody Shrublands and of up to 2% m3/m3 for Closed Shrublands.
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.subjectSMOS
dc.subjectcalibration
dc.subjectsoil moisture
dc.subject.enL-band
dc.subject.enland surface
dc.title.enCalibration and evaluation of an optical-passive microwave approach to estimate soil moisture over several land cover types
dc.typeCommunication dans un congrès
dc.identifier.doi10.1109/IGARSS.2015.7326188
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-02739586
hal.version1
hal.invitednon
hal.conference.organizerIEEE Geoscience and Remote Sensing Society (GRSS). USA.
hal.conference.end2015-07-31
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02739586v1
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=SANTAMAR%C3%8DA-ARTIGAS,%20Andr%C3%A8s&MATTAR,%20Cristian&WIGNERON,%20Jean-Pierre&OLIVERA-GUERRA,%20Luis%20Enrique&DURAN-ALARCON,%20Claudio&rft.isbn=978-1-4799-7929-5&rft.genre=unknown


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