NASA Distributed Active Archive Center (DAAC) at NSIDC

Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS

Data from Defense Meteorological Satellite Program (DMSP) Sensors

GIS Sea Ice Maps

NSIDC is no longer producing monthly sea ice concentration files in ArcInfo GIS interchange file format (.e00) for the Arctic and Antarctic. However, please visit NSIDC's Sea Ice Index: Archive Web page where you can download GIS compatible files (shapefiles).