Comparison between SMOS, VUA, ASCAT, and ECMWF soil moisture products over four watersheds in U.S.

Abstract : As part of the Soil Moisture and Ocean Salinity (SMOS) validation process, a comparison of the skills of three satellites [SMOS, Advanced Microwave Scanning Radiometer- Earth Observing System (AMSR-E) or Advanced Microwave Scanning Radiometer, and Advanced Scatterometer (ASCAT)], and one-model European Centre for Medium Range Weather Forecasting (ECMWF) soil moisture products is conducted over four watersheds located in the U.S. The four products compared in for 2010 over four soil moisture networks were used for the calibration of AMSR-E. The results indicate that SMOS retrievals are closest to the ground measurements with a low average root mean square error of 0.061 m 3* m−3 for the morning overpass and 0.067 m 3* m−3 for the afternoon overpass, which represents an improvement by a factor of 2-3 compared with the other products. The ECMWF product has good correlation coefficients (around 0.78) but has a constant bias of 0.1-0.2 m 3* m−3 over the four networks. The land parameter retrieval model AMSR-E product gives reasonable results in terms of correlation (around 0.73) but has a variable seasonal bias over the year. The ASCAT soil moisture index is found to be very noisy and unstable.
Type de document :
Article dans une revue
IEEE Transactions on Geoscience and Remote Sensing, Institute of Electrical and Electronics Engineers, 2013, pp.1-20. 〈10.1109/TGRS.2013.2252468〉
Liste complète des métadonnées

Littérature citée [52 références]  Voir  Masquer  Télécharger

http://hal.ird.fr/ird-00828830
Contributeur : Dominique Bruel <>
Soumis le : vendredi 31 mai 2013 - 16:23:12
Dernière modification le : jeudi 11 janvier 2018 - 06:15:36
Document(s) archivé(s) le : dimanche 1 septembre 2013 - 06:40:15

Fichier

2013tgrs-leroux-2252468-proof....
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

D. Leroux, Y.H. Kerr, A. Albitar, R. Bindlish, T.J. Jackson, et al.. Comparison between SMOS, VUA, ASCAT, and ECMWF soil moisture products over four watersheds in U.S.. IEEE Transactions on Geoscience and Remote Sensing, Institute of Electrical and Electronics Engineers, 2013, pp.1-20. 〈10.1109/TGRS.2013.2252468〉. 〈ird-00828830〉

Partager

Métriques

Consultations de la notice

559

Téléchargements de fichiers

1156