Global Outlook for Ice & Snow
Northern Hemisphere, average sea ice extent 1979-2003
March
September
Southern Hemisphere, average sea ice extent 1979-2002
September
February
Figure 5.3: Maps of average sea-ice extent in the Arctic summer (September) and winter (March), and in the Antarctic summer (February) and winter (September). They represent average sea-ice extent from 1979 to 2002/2003, based on
passive microwave satellite observations. The two polar regions are drawn to the same scale. Source: Based on Stroeve and Meier 1999 updated 2005 3 (Antarctic); Armstrong and Brodzik 2005 4 (Arctic)
CHAPTER 5
ICE IN THE SEA
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