Snow and ice data provided by the National Center for Environmental Prediction/NOAA, NSIDC, U. Bremen send comments about this site
The 40Mb animation at the left shows the 2007 dramatic loss of multiyear sea ice throughout the year. Multiyear sea ice is older and generally thicker ice – sea ice that has survived at least one melt season (shown in brighter white).
Timeseries of annual and seasonal sea ice extent from 1901-2010.
Compare side-by-side images of Northern Hemisphere sea ice extent for any two dates in the satellite record (1979-present).
View the updated high resolution animation of the 2007 sea ice retreat (01/01/2007 – 09/23/2007). WARNING – This quicktime animation is very large at 200Mb, but it illustrates nicely the temporal evolution of the 2007 sea ice. Animation: 2007 sea ice minimum animation
Additional years: 2002, 2003, 2004, 2005, 2006
Peruse an archive of map displays of the atmospheric and radiative climatic conditions leading up to the record setting Northern Hemisphere sea ice minimum of 2007: sea ice autopsy