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|a Large Decadal Decline of the Arctic Multiyear Ice Cover |h [electronic resource]. |
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|a [S.l.] : |b American Meteorological Society, |c 2012. |
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|a Journal of Climate Volume 25. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a The perennial ice area was drastically reduced to 38% of its climatological average in 2007 but recovered
slightly in 2008, 2009, and 2010 with the areas being 10%, 24%, and 11% higher than in 2007, respectively.
However, trends in extent and area remained strongly negative at 212.2% and 213.5% decade21, respectively.
The thick component of the perennial ice, called multiyear ice, as detected by satellite data during
the winters of 1979–2011 was studied, and results reveal that the multiyear ice extent and area are declining at
an even more rapid rate of 215.1% and 217.2% decade21, respectively, with a record low value in 2008
followed by higher values in 2009, 2010, and 2011. Such a high rate in the decline of the thick component of the
Arctic ice cover means a reduction in the average ice thickness and an even more vulnerable perennial ice
cover. The decline of the multiyear ice area from 2007 to 2008 was not as strong as that of the perennial ice
area from 2006 to 2007, suggesting a strong role of second-year ice melt in the latter. The sea ice cover is shown
to be strongly correlated with surface temperature, which is increasing at about 3 times the global average in
the Arctic but appears weakly correlated with the Arctic Oscillation (AO), which controls the atmospheric
circulation in the region. An 8–9-yr cycle is apparent in the multiyear ice record, which could explain, in part,
the slight recovery in the last 3 yr. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a surface temperature of the Earth. |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15042686/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/04/26/86/00001/FI15042686_thm.jpg |
