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Influence of weather conditions and spatial variability on glacier surface melt in Chilean Patagonia |
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| Authors: | Keiko Konya Takane Matsumoto |
| Institution: | 1. Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan 3. Research Institute of Global Change, Japan Agency for Marine–Earth Science and Technology, Yokosuka, Japan 2. Faculty of Science, Hokkaido University, Sapporo, Japan 4. Centro de Investigación en Ecosistemas de la Patagonia, Coyhaique, Chile |
| Abstract: | In order to clarify how differences in weather conditions affect the surface heat balance of a large maritime glacier, meteorological observations were carried out in the ablation area of Glaciar Exploradores in the Chilean Patagonia during the austral summer of 2006/2007. Under cloudy/rainy weather, when the air temperature and wind speed were high due to advection, the average melting heat was 18.8 MJ m?2 day?1 and the turbulent heat fluxes contributed 35% of the total melt. During clear weather, the average melting heat was 16.9 MJ m?2 day?1 and 13% of the total was the turbulent heat fluxes. A decrease in air temperature due to the development of the glacier boundary layer on clear days will lead to an overestimation of the melt using the air temperature at a weather station outside of the glacier. |
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