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|a Estimating the global radiative impact of the sea ice-albedo feedback in the Arctic |h [electronic resource]. |
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|a [S.l.] : |b American Geophysical Union, |c 2011-08-16. |
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|a Journal of Geophysical Research Volume 116. |
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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 Asimple method for estimating the global radiative forcing caused by the sea ice–albedo
feedback in the Arctic is presented. It is based on observations of cloud cover, sea ice
concentration, and top‐of‐atmosphere broadband albedo. The method does not rely on any
sort of climate model, making the assumptions and approximations clearly visible and
understandable and allowing them to be easily changed. Results show that the globally and
annually averaged radiative forcing caused by the observed loss of sea ice in the Arctic
between 1979 and 2007 is approximately 0.1 W m−2; a complete removal of Arctic sea ice
results in a forcing of about 0.7 W m−2, while a more realistic ice‐free summer scenario
(no ice for 1 month and decreased ice at all other times of the year) results in a forcing of
about 0.3 W m−2, similar to present‐day anthropogenic forcing caused by halocarbons.
The potential for changes in cloud cover as a result of the changes in sea ice makes the
evaluation of the actual forcing that may be realized quite uncertain since such changes could
overwhelm the forcing caused by the sea ice loss itself, if the cloudiness increases in the
summertime. |
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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 dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15052578/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/05/25/78/00001/FI15052578_thm.jpg |
