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Uploaded on Saturday 25 Feb 2012 by GRID-Arendal

Rapid retreat of glaciers in the Cordillera Blanca, Peru

Year: 2005 Author: UNEP/GRID-Arendal
There is now ample evidence of a major retreat of most mountain glaciers during the last 100 years in response to widespread increases in temperature. In recent decades, the rate of glacial recession has increased tremendously. Mountain glaciers supply moisture to mountain forests during thedry and warm seasons. With retreating mountain glaciers, the risk of forest fires increases, with a subsequent reduction of forested areas. Smaller glaciers and diminishing forests lead to the drying up of rivers downstream during the dry seasons. Precipitation will more often come as rain during the winterand wash away at once instead of being stored as snow and then melt in the dry summer season
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