Changes to this version include: • A new 1-km land-water mask based on the MODIS44w V6 data is used to determine land-water Tb corrections. The mask: o more accurately portrays current coastal and inland water body boundaries o adds an ice shelf type to determine an ice shelf fraction for a given footprint or grid cell, reflected in new data elements ice_shelf_fraction_h and ice_shelf_fraction_v • The maximum Tb threshold has been reduced from 340K to 310K to further remove RFI contamination For the full major and minor version history, go to https://nsidc.org/data/smap/version-history