1 NSIDC SSM/I Cavalieri et al (1992) 1 001038 CMS (France) cloud mask used by Medspiration 4 001038 Missing value 31 001038 EUMETSAT OSI-SAF 5 001038 AMSR-E 2 001038 No sea ice set 0 001038 Source of sea ice fraction 2014-09-03T09:53:31.723Z ECMWF 3 001038