Trends for the future
Sea Ice
Sea ice extent trend for the northern hemisphere for the
month of September.
Source
Year |
Sea
Ice Extent |
Sea
Ice Concentration |
1980 |
7.8 |
4.8 |
1985 |
6.9 |
4.2 |
1990 |
6.2 |
4.5 |
1995 |
6.1 |
4.4 |
2000 |
6.3 |
4.3 |
2002 |
6.0 |
4.0 |
2004 |
6.1 |
4.4 |
Figures
are in million sq. km. Source |
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Arctic sea ice that survives the summer and remains year round - called perennial sea ice - is melting at the alarming rate of 9 percent per decade. Satellite measurements show that most of the Arctic warmed significantly in the 1990s compared to the 1980s. Such shifts in the Arctic are likely early indications of a global climate in a state of flux.
