| Project/Area Number |
23710211
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Natural disaster science
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| Research Institution | National Research Institute for Earth Science and Disaster Prevention |
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Principal Investigator |
YAMAGUCHI Satoru 独立行政法人防災科学技術研究所, 観測・予測研究領域 雪氷防災研究センター, 主任研究員 (70425510)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 積雪 / 物理特性 / 積雪物理モデル / 気候依存性 / 積雪物性値 / 積雪変質モデル / シミュレーション / 積雪構造 / 積雪の物性値 |
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| Research Abstract |
Seasonal snow cover is one of the most extensive cryospheric phenomena, exerting significant climatic impacts not only in the high-latitude/ high-altitude regions but also in the mid-latitudes. However, Large-scale climate models such as global climate models (GCM), Earth System Models (ESM), or regional climate models (RCMs) on regional scales usually treat snow physical properties (e.g. density, thermal conductivity) to be independent of spatiotemporal fluctuation. In this study, spatiotemporal fluctuations of snow physical properties in Japan were estimated. The results demonstrate the spatiotemporal fluctuations of snow physical properties, and the dependence of the spatial distribution of snow physical properties on time. This study implies the problem to treat snow physical properties constantly in the GCM, ESM, RCMs models.
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