气候变化领域集成服务门户(CCPortal): Thermal stratification and mixing processes response to meteorological factors in a monomictic reservoir

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DOI	10.1016/j.jenvman.2024.120205
	Thermal stratification and mixing processes response to meteorological factors in a monomictic reservoir
	Wang, Yaning; Li, Yiping; Cheng, Yue; Wang, Yu; Zhu, Ya; Li, Ronghui; Acharya, Kumud; Ibrahim, Muhammad
发表日期	2024
ISSN	0301-4797
EISSN	1095-8630
起始页码	354
卷号	354
英文摘要	Formation and extinction of thermal stratifications impact the reservoir ecosystems and have been closely influenced by meteorological and hydrological factors. However, quantifying the relative importance of these crucial environmental factors and mechanisms in reservoir regions characterized by various depths remain comparatively uninvestigated. Tianbao Reservoir is a typical monomictic warm and drinking water source reservoir in Southwest China. This study supplemented field observations with a three-dimensional numerical simulation model to quantitatively analyze mixing and turnover events. Air temperature and wind were two important meteorological factors resulting in hydrodynamics during stratification and mixing processes. Air temperature led to variations in stratification strength and wind-induced fluctuations of thermocline depth. A 10% rise in air temperature increased stratification strength by 18%, and a 3 m/s rise in wind speed induced the deepening of the thermocline by 2.09 m. Two hydrodynamics involved penetrative convection caused by temperature plummets and wind-induced mixing during winter turnover events were identified. Penetrative convection was the main driving force, and wind shear mixed the upper 21% of the mixed layer, which was contributed by convection. Response of water temperature to air temperature in shallow regions was faster (58 d), and the mixing depth caused by the wind was smaller than that in deep regions. Research on physical processes during stratification and mixing processes can provide support for further study on water quality deterioration distributions.
英文关键词	Schmidt stability; EFDC; Temperature gradient; Wind shear; Convection
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001185780000001
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296687
作者单位	Hohai University; Guangxi University; Nevada System of Higher Education (NSHE); Desert Research Institute NSHE
推荐引用方式 GB/T 7714	Wang, Yaning,Li, Yiping,Cheng, Yue,et al. Thermal stratification and mixing processes response to meteorological factors in a monomictic reservoir[J],2024,354.
APA	Wang, Yaning.,Li, Yiping.,Cheng, Yue.,Wang, Yu.,Zhu, Ya.,...&Ibrahim, Muhammad.(2024).Thermal stratification and mixing processes response to meteorological factors in a monomictic reservoir.JOURNAL OF ENVIRONMENTAL MANAGEMENT,354.
MLA	Wang, Yaning,et al."Thermal stratification and mixing processes response to meteorological factors in a monomictic reservoir".JOURNAL OF ENVIRONMENTAL MANAGEMENT 354(2024).