SMOS-IC : a revised SMOS product based on a new effective scattering albedo and soil roughness parameterization
FERNÁNDEZ-MORÁN, Roberto
Interactions Sol Plante Atmosphère [UMR ISPA]
Universitat de València = University of Valencia [UV]
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Interactions Sol Plante Atmosphère [UMR ISPA]
Universitat de València = University of Valencia [UV]
FERNÁNDEZ-MORÁN, Roberto
Interactions Sol Plante Atmosphère [UMR ISPA]
Universitat de València = University of Valencia [UV]
< Reduce
Interactions Sol Plante Atmosphère [UMR ISPA]
Universitat de València = University of Valencia [UV]
Language
en
Communication dans un congrès
This item was published in
IEEE International Geoscience and Remote Sensing Symposium Proceedings, IEEE International Geoscience and Remote Sensing Symposium Proceedings, IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017-07-23, Fort Worth. 2017
IEEE Remote Sensing Society
English Abstract
This study presents a new SMOS (Soil Moisture and Ocean Salinity) soil moisture (SM) product based on a different scattering albedo and soil roughness parameterization: the SMOS-IC (SMOS INRA-CESBIO) data set. In this ...Read more >
This study presents a new SMOS (Soil Moisture and Ocean Salinity) soil moisture (SM) product based on a different scattering albedo and soil roughness parameterization: the SMOS-IC (SMOS INRA-CESBIO) data set. In this study, several parameterizations of the vegetation and soil roughness parameters (co, H-R and N-RP, P = H, V) were tested and the retrieved SM was compared against in situ observations obtained from the International Soil Moisture Network (ISMN). Firstly, values of omega = 0.10, H-R = 0.4 and N-RP = -1 (P = H, V) were found globally. Secondly, a calibration of these parameters was obtained for the different land cover categories of the International Geosphere-Biosphere Programme (IGBP) scheme. Depending on the IGBP land cover class, values of co and HR varied, respectively, in the ranges 0.08 - 0.12 and 0.1 - 0.5. The IGBP-based calibration is currently used in the SMOS-IC product algorithm. Using as reference the ISMN sites, a better performance of the SMOS-IC product over the operational SMOSL3 (SMOS level 3) SM product was found: R = 0.62, bias = -0.019 m3/m3, ubRMSE = 0.061 m3/m3 for SMOS-IC; against R = 0.54, bias = -0.037 m3/m3 and ubRMSE = 0.069 m3/m3 for SMOSL3.Read less <
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