Characteristics and climatic sensitivities of glacier mass balance on the Asian highland.

  • FUJITA Koji
    Institute for Hydrospheric-Atmospheric Sciences, Nagoya University

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  • アジア高山域における氷河質量収支の特徴と気候変化への応答
  • アジア コウザンイキ ニ オケル ヒョウガ シツリョウ シュウシ ノ トクチョウ ト キコウ ヘンカ エ ノ オウトウ

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The characteristics and climatic sensitivities of glaciers in the Nepal Himalayas and on the Tibetan Plateau, where glaciers are accumulated by the summer monsoon, have been observed, analyzed and discussed since 1970s. Studies clarified that glaciers could maintain their mass since the monsoon provided precipitation during the melting season. Snowfall in summer keeps surface albedo high and largely restrains ablation. Nevertheless, it was also clarified that glaciers would respond to temperature change more sensitively than the winter-accumulation type glaciers. Under the monsoon climate, warming would cause a drastic increase in ablation in combination with surface albedo lowering. Therefore, although glaciers on/around the Asian highland can be sustained by summer accumulation, they are more vulnerable to warming than winter-accumulation type glaciers in other regions.

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