期刊
SCIENCE ADVANCES
卷 5, 期 3, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aau8507
关键词
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资金
- Leverhulme Early Career Fellowship
- Department of Geography, Durham University
- Natural Sciences and Engineering Research Council of Canada
- University of Ottawa
- Canada Foundation for Innovation
- Netherlands Earth System Science Centre (NESSSC)
- Polar Program of the Netherlands Organisation for Scientific Research (NWO/NPP)
The Canadian Arctic Archipelago contains >300 glaciers that terminate in the ocean, but little is known about changes in their frontal positions in response to recent changes in the ocean-climate system. Here, we examine changes in glacier frontal positions since the 1950s and investigate the relative influence of oceanic temperature versus atmospheric temperature. Over 94% of glaciers retreated between 1958 and 2015, with a region-wide trend of gradual retreat before similar to 2000, followed by a fivefold increase in retreat rates up to 2015. Retreat patterns show no correlation with changes in subsurface ocean temperatures, in clear contrast to the dominance of ocean forcing in western Greenland and elsewhere. Rather, significant correlations with surface melt indicate that increased atmospheric temperature has been the primary driver of the acceleration in marine-terminating glacier frontal retreat in this region.
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