Relative soil moisture from C- and L-band SAR time series
نویسنده
چکیده
Soil moisture is a key element in the global hydrologic, energy and carbon cycle. Knowledge about the location specific sensitivity of radar backscatter can be used for operational determination of relative soil moisture over large regions. This approach has been developed for C-Band scatterometer and transferred to C-Band ScanSAR within the ESA Tiger Innovator project SHARE (ENVISAT ASAR WS/GM; www.ipf.tuwien.ac.at/radar/share). This method relies on a high number of acquisitions in order to get a realistic estimate of a dry and a wet reference value and thus sensitivity. The performance of L-Band SAR has not been tested so far for this approach. A first comparison of ENVISAT ASAR Wide Swath and ALOS PALSAR Fine Beam Mode data over the Duero Basin in Spain is presented in this paper.
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