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espace at MMU > Faculties > Faculty of Science and Engineering > Department of Environmental and Geographical Sciences: Centre for Air Transport and the Environment (CATE) > The potential for sea level rise: new estimates from glacier and ice cap area and volume distributions

Please use this identifier to cite or link to this item: http://hdl.handle.net/2173/96506
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Title: The potential for sea level rise: new estimates from glacier and ice cap area and volume distributions
Authors: Raper, Sarah C. B.
Braithwaite, Roger J.
Citation: Geophysical research letters, 2005, vol. 32, L05502
Publisher: American Geophysical Union
Issue Date: 2005
URI: http://hdl.handle.net/2173/96506
DOI: 10.1029/2004GL021981
Additional Links: http://www.agu.org/journals/gl/
Abstract: Projections of sea‐level rise from mountain glaciers and ice caps for the next century and beyond should be based on an assessment of the ice available for melting. Projections to date are based on all regions except Greenland and Antarctica (the latter are considered separately by the IPCC), yet no sound estimates for the appropriate volume of ice and its potential for sea level rise are evident in the literature. An ice cap data set is compiled allowing the separate treatment of glacier area coverage data. Glacier inventory data are comprehensive enough in some regions to allow the estimation of glacier size distributions. The differences in the distributions are related to a metric of the regional topographic variability, allowing glacier size distributions to be estimated on a 1° latitude longitude grid of cells containing glaciers. Appropriate volume‐area scaling for glaciers and for ice caps gives global estimates of glacier and ice cap volumes by size class. This leads to an estimate of the total ice volume of 0.087 ± 0.010 106 km3 and a sea level rise equivalent of 0.241 ± 0.026 m. The glaciers and ice caps contribute 41% and 59% to these estimates respectively. These values are based on data sets compiled during several decades, mainly in the second half of the 20th Century. We compare our results to published results that include the glaciers and icecaps at the margins of the Greenland and Antarctic ice sheets.
Type: Article
Language: en
Description: Full-text of this article is not available in this e-prints service. This article was originally published following peer-review in Geophysical Research Letters, published by and copyright American Geophysical Union.
Keywords: Glaciers
Glaciology
Cryospheric Change
Sea Level Change
Cryosphere
ISSN: 0094-8276
1944-8007
Appears in Collections: Department of Environmental and Geographical Sciences: Centre for Air Transport and the Environment (CATE)

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