Sunlight, water, and ice: Extreme Arctic sea ice melt during the summer of 2007

Details Sunlight, water, and ice: Extreme Arctic sea ice melt during the summer of 2007 Sunlight, water, and ice: Extreme Arctic sea ice melt during the summer of 2007

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3511501p&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 11, CiteID L11501

Physics

60

Cryosphere: Sea Ice (4540), Cryosphere: Mass Balance (1218, 1223), Cryosphere: Energy Balance

Scientific paper

The summer extent of the Arctic sea ice cover, widely recognized as an indicator of climate change, has been declining for the past few decades reaching a record minimum in September 2007. The causes of the dramatic loss have implications for the future trajectory of the Arctic sea ice cover. Ice mass balance observations demonstrate that there was an extraordinarily large amount of melting on the bottom of the ice in the Beaufort Sea in the summer of 2007. Calculations indicate that solar heating of the upper ocean was the primary source of heat for this observed enhanced Beaufort Sea bottom melting. An increase in the open water fraction resulted in a 500% positive anomaly in solar heat input to the upper ocean, triggering an ice-albedo feedback and contributing to the accelerating ice retreat.

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