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Summary
| Description | September ice extent from 1979 to 2007 shows an obvious decline. At the end of each summer, the sea ice cover reaches its minimum extent and the ice that remains is called the perennial ice cover, which consists mainly of thick multi-year ice floes. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached around Sept. 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. This data visualization shows the annual sea ice minimum from 1979 through 2007. |
| Date | 09.25.07 |
| Source | http://www.nasa.gov/vision/earth/environment/arctic_minimum.html |
| Author | NASA |
Licensing
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:42, 20 June 2008 | | 3,840 × 2,160 (539 KB) | Sagredo | {{Information |Description={{en|1=|Description=September ice extent from 1979 to 2007 shows an obvious decline. At the end of each summer, the sea ice cover reaches its minimum extent and the ice that remains is called the perennial ice cover, which consi |
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