Evaluation of the most recent reprocessed SMOS soil moisture products: Comparison between SMOS level 3 V246 and V272
DUCHARNE, Agnès
Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
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Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
DUCHARNE, Agnès
Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
FERNANDEZ-MORAN, Roberto
Interactions Sol Plante Atmosphère [UMR ISPA]
Department of Earth Physics and Thermodynamics [Valencia]
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Interactions Sol Plante Atmosphère [UMR ISPA]
Department of Earth Physics and Thermodynamics [Valencia]
Langue
en
Communication dans un congrès
Ce document a été publié dans
IEEE International Geoscience and Remote Sensing Symposium Proceedings, IEEE International Geoscience and Remote Sensing Symposium Proceedings, Geoscience and Remote Sensing Symposium (IGARSS), 2015 IEEE International, 2015-07-26, Milan. 2015
IEEE Geoscience and Remote Sensing Society
Résumé en anglais
Soil Moisture and Ocean Salinity (SMOS) satellite has been providing surface soil moisture (SSM) and ocean salinity (OS) retrievals at L-band for five years (2010–2014). During these five years, the SSM retrieval ...Lire la suite >
Soil Moisture and Ocean Salinity (SMOS) satellite has been providing surface soil moisture (SSM) and ocean salinity (OS) retrievals at L-band for five years (2010–2014). During these five years, the SSM retrieval algorithm i.e. the L-MEB (L-Band Microwave Emission of the Biosphere [1] model has been progressively improved and hence results in different versions of the SMOS SSM products. This study aims at evaluating the last improvement in the SSM products of the most recent SMOS level 3 (SMOSL3) reprocessing (SMOSL3_2.72) vs. an earlier version (SMOSL3_246). Correlation, bias, Root Mean Square Difference (RMSD) and unbiased RMSD (unbRMSD) were used as performance criteria in this study using the ECMWF SM-DAS-2 product as a reference. Results show that the SMOS SSM estimates have been improved: (i) SMOSL3_272 was closer to SM-DAS-2 over most of the globe-with the exception of arid regions-in terms of unbRMSD (ii) SMOSL3_272 was closer to SM-DAS-2 over Spain, Brazil, parts of Sahel, high latitude and equator regions but comparable with SMOSL3_246 over most of the rest of the globe in terms of correlations.< Réduire
Mots clés
SMOS
hydrology
satellites
soil moisture
Mots clés en anglais
SM-DAS-2
correlation
land surface
microwave theory and techniques
remote sensing
Origine
Importé de halUnités de recherche