HIGH-RESOLUTION ENHANCED PRODUCT BASED ON SMAP ACTIVE-PASSIVE APPROACH USING SENTINEL 1A AND 1B SAR DATA

N. N. Das, D. Entekhabi, S. Kim, T. Jagdhuber, S. Dunbar, S. Yueh, P. E. O'Neill, A. Colliander, J. Walker, T. J. Jackson
2018 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
<p><strong>Abstract.</strong> SMAP project released a new enhanced high-resolution (3km) soil moisture active-passive product. This product is obtained by combining the SMAP radiometer data and the Sentinel-1A and -1B Synthetic Aperture Radar (SAR) data. The approach used for this product draws heavily from the heritage SMAP active-passive algorithm. Modifications in the SMAP active-passive algorithm are done to accommodate the Copernicus Program's Sentinel-1A and -1B multi-angular C-band SAR
more » ... ta. Assessment of the SMAP and Sentinel active-passive algorithm has been conducted and results show feasibility of estimating surface soil moisture at high-resolution in regions with low vegetation density (&amp;sim;<span class="thinspace"></span>&amp;lt;<span class="thinspace"></span>3<span class="thinspace"></span>kg<span class="thinspace"></span>m<sup>&amp;minus;2</sup>). The beta version of this product is released to public on Nov 1st, 2017. This high resolution (3<span class="thinspace"></span>km) soil moisture product is useful for agriculture, flood mapping, watershed/rangeland management, and ecological/hydrological applications.</p>
doi:10.5194/isprs-archives-xlii-5-203-2018 fatcat:3zoptz5yovamtl6ledftni6ezu