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DOI | 10.1029/2021GL093429 |
Ice-covered lakes of Tibetan Plateau as solar heat collectors | |
G. B. Kirillin; T. Shatwell; L. Wen | |
2021-06-19 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The Qinghai-Tibet Plateau possesses the largest alpine lake system, which plays a crucial role in the land-atmosphere interaction. We report first observations on the thermal and radiation regime under ice of the largest freshwater lake of the Plateau. The results reveal that freshwater lakes on the Tibetan Plateau fully mix under ice. Due to strong solar heating, water temperatures increase above the maximum density value 1-2 months before the ice break, forming stable thermal stratification with subsurface temperatures > 6 °C. The resulting heat flow from water to ice makes a crucial contribution to ice cover melt. After the ice breakup, the accumulated heat is released into the atmosphere during 1-2 days, increasing lake-atmosphere heat fluxes up to 500 W m−2. The direct biogeochemical consequences of the deep convective mixing are aeration of the deep lake waters and upward supply of nutrients to the upper photic layer. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/330697 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | G. B. Kirillin,T. Shatwell,L. Wen. Ice-covered lakes of Tibetan Plateau as solar heat collectors[J]. Geophysical Research Letters,2021. |
APA | G. B. Kirillin,T. Shatwell,&L. Wen.(2021).Ice-covered lakes of Tibetan Plateau as solar heat collectors.Geophysical Research Letters. |
MLA | G. B. Kirillin,et al."Ice-covered lakes of Tibetan Plateau as solar heat collectors".Geophysical Research Letters (2021). |
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