Quality Assessment ReportsCollectionsSMAPDataset Id and VersionSPL4SMAU2SPL4SMGP2SPL4SMLM2SPL4SMLM3SPL4SMGP3SPL4SMAU3Global Assessment of the SMAP Level-4 Surface and Root-Zone Soil Moisture Product Using Assimilation DiagnosticsData Programnasa_nsidc_daac