The melting of mountain glaciers and ice caps is expected to contribute significantly to sea-level rise in the twenty-first century. Glaciers in the Patagonian Icefields of South America are thought to have contributed about 10% of the total sea-level rise attributable to mountain glaciers in the past 50 years. The melt rate and sea-level contribution of the Patagonian Icefields increased markedly in the twentieth century.
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