Validation of Soil Moisture Data Products from the NASA SMAP Mission

Andreas Colliander, Rolf Reichle, Wade Crow, Michael H. Cosh, Fan Chen, Steven K. Chan, Narendra Narayan Das, Rajat Bindlish, Mario J Chaubell, Seungbum Kim, Qing Liu, Peggy E Oneill (+36 others)
2021 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
The National Aeronautics and Space Administration (NASA) Soil Moisture Active Passive (SMAP) mission has been validating its soil moisture (SM) products since the start of data production on March 31, 2015. Prior to launch, the mission defined a set of criteria for core validation sites (CVS) that enable the testing of the key mission SM accuracy requirement (unbiased root-mean-square error <0.04 m 3 /m 3 ). The validation approach also includes other ("sparse network") in situ SM measurements,
more » ... satellite SM products, model-based SM products, and field experiments. Over the past six years, the SMAP SM products have been analyzed with respect to these reference data, and the analysis approaches themselves have been scrutinized in an effort to best understand the products' performance. Validation of the
doi:10.1109/jstars.2021.3124743 fatcat:jlp43jv4fjfnrntmaru7bwsmji