Authors
Anna Balenzano, Francesco Mattia, Giuseppe Satalino, Francesco P Lovergine, Davide Palmisano, Jian Peng, Philip Marzahn, Urs Wegmüller, Oliver Cartus, Katarzyna Dąbrowska-Zielińska, Jan P Musial, Malcolm WJ Davidson, Valentijn RN Pauwels, Michael H Cosh, Heather McNairn, Joel T Johnson, Jeffrey P Walker, Simon H Yueh, Dara Entekhabi, Yann H Kerr, Thomas J Jackson
Publication date
2021/9/15
Journal
Remote Sensing of Environment
Volume
263
Pages
112554
Publisher
Elsevier
Description
This study presents an assessment of a pre-operational soil moisture product at 1 km resolution derived from satellite data acquired by the European Radar Observatory Sentinel-1 (S-1), representing the first space component of the Copernicus program. The product consists of an estimate of surface soil volumetric water content Θ [m3/m3] and its uncertainty [m3/m3], both at 1 km. The retrieval algorithm relies on a time series based Short Term Change Detection (STCD) approach, taking advantage of the frequent revisit of the S-1 constellation that performs C-band Synthetic Aperture Radar (SAR) imaging. The performance of the S-1 Θ product is estimated through a direct comparison between 1068 S-1 Θ images against in situ Θ measurements acquired by 167 ground stations located in Europe, America and Australia, over 4 years between January 2015 and December 2020, depending on the site. The paper …
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A Balenzano, F Mattia, G Satalino, FP Lovergine… - Remote Sensing of Environment, 2021