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Record Mass Loss from Greenland's Best-observed Local Glacier : Volume 5, Issue 1 (04/02/2011)

By Mernild, S. H.

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Book Id: WPLBN0004017086
Format Type: PDF Article :
File Size: Pages 17
Reproduction Date: 2015

Title: Record Mass Loss from Greenland's Best-observed Local Glacier : Volume 5, Issue 1 (04/02/2011)  
Author: Mernild, S. H.
Volume: Vol. 5, Issue 1
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Jakobsen, B. H., Lipscomb, W. H., Knudsen, N. T., Hasholt, B., Yde, J. C., Malmros, J. K., & Mernild, S. H. (2011). Record Mass Loss from Greenland's Best-observed Local Glacier : Volume 5, Issue 1 (04/02/2011). Retrieved from http://nook-library.net/


Description
Description: Climate, Ocean, and Sea Ice Modeling Group, Computational Physics and Methods, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. Warming in the Arctic during the past several decades has caused glaciers to thin and retreat, resulting in increased freshwater runoff to the ocean. Local glaciers peripheral to the ice sheet are also retreating, but few mass-balance observations are available to quantify that retreat and determine the extent to which these glaciers are out of equilibrium with present-day climate. Here, we document record mass loss in 2009/2010 for the Mittivakkat Glacier (henceforth MG), the only local glacier in Greenland for which there exist long-term observations of both the surface mass balance and glacier front fluctuations. We attribute this mass loss to record high mean summer (June–August) and higher-than-average winter (September–May) temperatures and to lower-than-average winter precipitation. Also, we use the 15-year mass-balance record to estimate present-day and equilibrium accumulation-area ratios for the MG. We show that the glacier is significantly out of balance and will likely lose approximately 70% of its current area and 80% of its volume even in the absence of further climate changes. Temperature records from coastal stations in Southeast Greenland suggest that recent MG mass losses are not merely a local phenomenon, but are indicative of glacier changes in the broader region. Mass-balance observations for the MG therefore provide unique documentation of the general retreat of Southeast Greenland's local glaciers under ongoing climate warming.

Summary
Record mass loss from Greenland's best-observed local glacier

Excerpt
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