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The sea ice around Antarctica on Sept. 27, 2004, as measured by QuikSCAT.
This image, taken by Moderate Resolution Imaging Spectroradiometer (MODIS) on Jan. 31, 2002, shows meltwater starting to form on the Antarctic Larsen Ice Shelf prior to its collapse.
Sea ice concentration
A look at the minimum sea ice concentration for September 2004 using data from the SSM/I sensor.
In addition, the red line indicates the average minimum extent of sea ice for September, derived from the average of monthly data between October 1978 and September 2002.