Glacier and Permafrost Signals of 20th-Century Warming
Open Access
- 1 January 1990
- journal article
- research article
- Published by International Glaciological Society in Annals of Glaciology
- Vol. 14, 99-101
- https://doi.org/10.1017/s026030550000834x
Abstract
Currently-available evidence of 20th-century warming from glaciers and permafrost is briefly reviewed. The signals are clear and strong: warming of polar firn and permafrost, and mass losses of glaciers at lower latitudes, were most striking towards the middle of the century. The easily observable length-reduction of mountain glaciers confirms the global character of the evolution. A probably intermittent reversal of the trend was observed in places after about 1950.Keywords
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