气候变化领域集成服务门户(CCPortal): Analysis of Lake Stratification and Mixing and Its Influencing Factors over High Elevation Large and Small Lakes on the Tibetan Plateau

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DOI	10.3390/w15112094
	Analysis of Lake Stratification and Mixing and Its Influencing Factors over High Elevation Large and Small Lakes on the Tibetan Plateau
	Wang, Binbin; Ma, Yaoming; Wang, Yan; Lazhu; Wang, Lu; Ma, Weiqiang; Su, Bob
发表日期	2023
EISSN	2073-4441
卷号	15 期号:11
英文摘要	Lake stratification and mixing processes can influence gas and energy transport in the water column and water-atmosphere interactions, thus impacting limnology and local climate. Featuring the largest high-elevation inland lake zone in the world, comprehensive and comparative studies on the evolution of lake stratification and mixing and their driving forces are still quite limited. Here, using valuable temperature chain measurements in four large lakes (Nam Co, Dagze Co, Bangong Co, and Paiku Co) and a small lake adjacent to Nam Co, our objectives are to investigate the seasonal and diurnal variations of epilimnion depth (E-p, the most important layer in stratification and mixing process) and to analyze the driving force differences between small lake and Nam Co. Results indicate that E-p estimated by the methods of the absolute density difference (<0.1 kg m(-3)) from the surface and the Lake-Analyzer were quite similar, with the former being more reliable and widely applicable. The stratification and mixing in the four large lakes showed a dimictic pattern, with obvious spring and autumn turnovers. Additionally, the stratification form during heat storage periods, with E-p quickly locating at depths of approximately 10-15 m, and, after that, increasing gradually to the lake bottom. Additionally, the diurnal variation in E-p can be evidenced both in the large and small lakes when temperature measurements above 3 m depth are included. For Nam Co, the dominant influencing factors for the seasonal variation of E-p were the heat budget components (turbulent heat fluxes and radiation components), while wind speed only had a relatively weak positive correlation (r = 0.23). In the small lake, radiation components and wind speed show high negative (r = -0.43 to -0.59) and positive (r = 0.46) correlation, with rare correlations for turbulent heat flux. These reported characteristics have significance for lake process modeling and evaluation in these high-elevation lakes.
关键词	lake stratification epilimnion depth large and small lake high-elevation lakes Tibetan Plateau
英文关键词	EPILIMNION DEPTH; TEMPERATURE; CLIMATE; VARIABILITY; SHALLOW; CO
WOS研究方向	Environmental Sciences ; Water Resources
WOS记录号	WOS:001006417900001
来源期刊	WATER
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283918
作者单位	Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Lanzhou University; Chinese Academy of Sciences; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS; Tibet University; University of Twente
推荐引用方式 GB/T 7714	Wang, Binbin,Ma, Yaoming,Wang, Yan,et al. Analysis of Lake Stratification and Mixing and Its Influencing Factors over High Elevation Large and Small Lakes on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2023,15(11).
APA	Wang, Binbin.,Ma, Yaoming.,Wang, Yan.,Lazhu.,Wang, Lu.,...&Su, Bob.(2023).Analysis of Lake Stratification and Mixing and Its Influencing Factors over High Elevation Large and Small Lakes on the Tibetan Plateau.WATER,15(11).
MLA	Wang, Binbin,et al."Analysis of Lake Stratification and Mixing and Its Influencing Factors over High Elevation Large and Small Lakes on the Tibetan Plateau".WATER 15.11(2023).