气候变化领域集成服务门户(CCPortal): Ice-Covered Lakes of Tibetan Plateau as Solar Heat Collectors

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DOI	10.1029/2021GL093429
	Ice-Covered Lakes of Tibetan Plateau as Solar Heat Collectors
	Kirillin, Georgiy B.; Shatwell, Tom; Wen, Lijuan
通讯作者	Kirillin, GB (通讯作者)，Leibniz Inst Freshwater Ecol & Inland Fisheries I, Dept Ecohydrol, Berlin, Germany.
发表日期	2021
ISSN	0094-8276
EISSN	1944-8007
卷号	48 期号:14
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 degrees 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.
关键词	THERMAL REGIME RADIATION TRENDS FLUX
英文关键词	alpine lakes; extreme environments; lake-atmosphere interaction; lake ice; radiatively driven convection; winter limnology
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000711496700007
来源期刊	GEOPHYSICAL RESEARCH LETTERS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254502
作者单位	[Kirillin, Georgiy B.] Leibniz Inst Freshwater Ecol & Inland Fisheries I, Dept Ecohydrol, Berlin, Germany; [Shatwell, Tom] UFZ Helmholtz Ctr Environm Res, Dept Lake Res, Magdeburg, Germany; [Wen, Lijuan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Kirillin, Georgiy B.,Shatwell, Tom,Wen, Lijuan. Ice-Covered Lakes of Tibetan Plateau as Solar Heat Collectors[J]. 中国科学院西北生态环境资源研究院,2021,48(14).
APA	Kirillin, Georgiy B.,Shatwell, Tom,&Wen, Lijuan.(2021).Ice-Covered Lakes of Tibetan Plateau as Solar Heat Collectors.GEOPHYSICAL RESEARCH LETTERS,48(14).
MLA	Kirillin, Georgiy B.,et al."Ice-Covered Lakes of Tibetan Plateau as Solar Heat Collectors".GEOPHYSICAL RESEARCH LETTERS 48.14(2021).