CHARACTERISTICS OF EVAPORATION FROM SNOW AND TUNDRA SURFACE IN SPITSBERGEN IN THE SNOWMELT SEASON 1993
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概要
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Meteorological conditions and evaporation from snow and tundra surfaces were measured in the tundra area in Spitsbergen from the end of May to the end of June in 1993. In this period, three types of ground surface were seen, i.e. dry snow, melting snow and snow-free tundra. Clear changes in evaporation as well as the meteorological conditions were seen with the changes in surface condition. During the dry snow period, evaporation predominated at the snow surface and the latent heat loss by evaporation suppressed the snowmelt. During the snowmelt period, the temperature of the snow cover was 0℃ from the surface to the bottom, and condensation predominated due to the increase of vapor pressure in the air. The latent heat by condensation contributed to the snowmelt. After the seasonal snow was gone and the meltwater was still abundant at the tundra surface, intense evaporation of about 3.7 mmday^<-1> occurred with the rapid surface temperature increase, while condensation occurred on the remaining snow surface.
- 国立極地研究所の論文
著者
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Kodama Yuji
Institute of Low Temperature Science, Hokkaido University
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TAGUCHI Yuji
Japan Meteorological Agency
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TAKEUCHI Yukari
Institute of Low Temperature Science, Hokkaido University
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NAKABAYASHI Hironori
Institute of Low Temperature Science, Hokkaido University
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Nakabayashi Hironori
Japan Weather Association
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Kodama Yuji
Institute Of Low Temperature Science Hokkaido University
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Takeuchi Yukari
Nagaoka Institute Of Snow And Ice Studies National Research Institute For Earth Science And Disaster
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