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Mountain glaciers and ice caps around Antarctica make a large sea-level rise contribution
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Stockholms universitet.
University of Alaska.
Stockholms universitet.
2009 (English)In: Geophysical Research Letters, ISSN 0094-8276, Vol. 36, L07501- p.Article in journal (Refereed) Published
Abstract [en]

The Intergovernmental Panel on Climate Change (IPCC) estimates that the sum of all contributions to sea-level rise for the period 1961-2004 was 1.1 +/- 0.5 mm a(-1), leaving 0.7 +/- 0.7 of the 1.8 +/- 0.5 mm a(-1) observed sea-level rise unexplained. Here, we compute the global surface mass balance of all mountain glaciers and ice caps (MG&IC), and  find that part of this much-discussed gap can be attributed to a larger contribution than previously assumed from mass loss of MG&IC, especially those around the Antarctic Peninsula. We estimate global surface mass loss of all MG&IC as 0.79 +/- 0.34 mm a(-1) sea-level equivalent (SLE) compared to IPCC's 0.50 +/- 0.18 mm a(-1). The Antarctic MG&IC contributed 28% of the global estimate due to exceptional warming around the Antarctic Peninsula and high sensitivities to temperature similar to those we find in Iceland, Patagonia and Alaska.

Place, publisher, year, edition, pages
2009. Vol. 36, L07501- p.
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-119246DOI: 10.1029/2008GL037020ISI: 000264860400003OAI: oai:DiVA.org:uu-119246DiVA: diva2:299894
Available from: 2010-02-24 Created: 2010-02-24 Last updated: 2010-08-03Bibliographically approved

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