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The impact of lower sea-ice extent on Arctic greenhouse-gas exchange

Nature Climate Change

By:
, , , , , , and
DOI: 10.1038/nclimate1784

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Abstract

In September 2012, Arctic sea-ice extent plummeted to a new record low: two times lower than the 1979–2000 average. Often, record lows in sea-ice cover are hailed as an example of climate change impacts in the Arctic. Less apparent, however, are the implications of reduced sea-ice cover in the Arctic Ocean for marine–atmosphere CO2 exchange. Sea-ice decline has been connected to increasing air temperatures at high latitudes. Temperature is a key controlling factor in the terrestrial exchange of CO2 and methane, and therefore the greenhouse-gas balance of the Arctic. Despite the large potential for feedbacks, many studies do not connect the diminishing sea-ice extent with changes in the interaction of the marine and terrestrial Arctic with the atmosphere. In this Review, we assess how current understanding of the Arctic Ocean and high-latitude ecosystems can be used to predict the impact of a lower sea-ice cover on Arctic greenhouse-gas exchange.

Geospatial Extents

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The impact of lower sea-ice extent on Arctic greenhouse-gas exchange
Series title:
Nature Climate Change
DOI:
10.1038/nclimate1784
Volume
3
Year Published:
2013
Language:
English
Publisher:
Nature Publishing Group
Publisher location:
New York, NY
Contributing office(s):
Alaska Cooperative Fish and Wildlife Research Unit
Description:
8 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Nature Climate Change
First page:
195
Last page:
202
Other Geospatial:
Arctic Ocean