NSIDC sea ice area and extent

Antarctic sea ice

The graphs and data below are calculated from the gridded sea ice concentration data from the National Snow and Ice Data Center (NSIDC) .  This uses daily data, rather than the 5-day averages that are used on some other websites.

Antarctic sea ice area

Antarctic sea ice extent

Compactness

Sea ice compactness graph 

Regional NSIDC Antarctic sea ice area

Regional NSIDC Antarctic sea ice extent