Product Specification DocumentsCollectionsSMAPDataset Id and VersionSPL4SMGP1SPL4SMLM1SPL4SMAU1SPL4SMGP2SPL4SMGP3SPL4SMLM2SPL4SMLM3SPL4SMAU2SPL4SMAU3SPL4SMAU/SMGP/SMLM Product Specification Document Version 1 [2015]Data Programnasa_nsidc_daac