Title :
Surface soil moisture estimation using active microwave ERS wind scatterometer and SAR data
Author :
Zribi, M. ; Le Hégarat-Mascle, S. ; Ottle, Catherine ; Kammoun, B. ; Guerin, C.
Author_Institution :
CETP/IPSL, Velizy, France
Abstract :
This paper presents an original methodology to retrieve surface (< 5 cm) soil moisture over low vegetated regions using the two active microwave instruments of ERS satellite. The developed algorithm takes advantage of the multi-angular configuration and high temporal resolution of the Wind Scatterometer (WSC) combined with the SAR high spatial resolution. High correlations (R2 greater than 0.8) are observed for three studied watersheds in France with an rms error smaller than 4% between real and retrieved moistures.
Keywords :
hydrological techniques; microwave measurement; remote sensing by radar; soil; synthetic aperture radar; water resources; ERS satellite; France; SAR data; SAR high spatial resolution; WSC; Wind Scatterometer; active microwave instruments; continental water cycle; heat fluxes; high correlations; high temporal resolution; infiltration; low vegetated regions; microwave ERS wind scatterometer; multiangular configuration; precipitation; rms error; runoff; surface soil moisture estimation; watersheds; wind direction; wind speed; Electromagnetic heating; Instruments; Microwave theory and techniques; Radar measurements; Sea measurements; Sea surface; Soil measurements; Soil moisture; Spatial resolution; Surface soil;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1294122
