University of Illinois Sea Ice Dataset

Northern Hemisphere : 1870 - 2011

Please contact William Chapman with any questions.

Historical grids of Northern Hemisphere sea ice concentration on a 1 degree X 1 degree cylindrical latitude/lontidude grid are available below for the period 1870 - 12/2011. The data are in ascii text format with associated documentation. Please feel free to contact us with any questions you may have regarding this data.

latest files available for sea ice data
1 documentation
2 sea ice concentration dataset

Historical grids of Northern Hemisphere sea ice concentration are available below for the period 1901-2005. The data are in ascii text format with associated documentation, latititude and longitude descriptions, and grid cell area descriptions. Please feel free to contact us with any questions you may have regarding this data.

latest files available for sea ice data
1 documentation
2 sea ice concentration dataset
3 gridpoint latitudes and longitudes
4 gridpoint area descriptions

Historical timeseries of annual and seasonal Northern Hemisphere sea ice extent are available below for the period 1870-2008. The data are in ascii text format. Please feel free to contact us with any questions you may have regarding this data.

latest seasonal sea ice extent timeseries
1 seasonal sea ice extent timeseries