The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Paul Miller. Photo.

Paul Miller

Senior lecturer

Paul Miller. Photo.

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

Author

  • Frans-Jan Parmentier
  • Torben Christensen
  • Lise Lotte Sorensen
  • Soren Rysgaard
  • A. David McGuire
  • Paul Miller
  • Donald A. Walker

Summary, in English

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.

Department/s

  • Dept of Physical Geography and Ecosystem Science
  • MERGE: ModElling the Regional and Global Earth system
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publishing year

2013

Language

English

Pages

195-202

Publication/Series

Nature Climate Change

Volume

3

Issue

3

Document type

Journal article

Publisher

Nature Research

Topic

  • Physical Geography

Status

Published

ISBN/ISSN/Other

  • ISSN: 1758-6798