气候变化领域集成服务门户(CCPortal): Tributaries affect the thermal response of lakes to climate change

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DOI	10.5194/hess-22-31-2018
	Tributaries affect the thermal response of lakes to climate change
	Vinnä L.R.; Wüest A.; Zappa M.; Fink G.; Bouffard D.
发表日期	2018
ISSN	1027-5606
起始页码	31
结束页码	51
卷号	22 期号:1
英文摘要	Thermal responses of inland waters to climate change varies on global and regional scales. The extent of warming is determined by system-specific characteristics such as fluvial input. Here we examine the impact of ongoing climate change on two alpine tributaries, the Aare River and the Rhône River, and their respective downstream peri-alpine lakes: Lake Biel and Lake Geneva. We propagate regional atmospheric temperature effects into river discharge projections. These, together with anthropogenic heat sources, are in turn incorporated into simple and efficient deterministic models that predict future water temperatures, river-borne suspended sediment concentration (SSC), lake stratification and river intrusion depth/volume in the lakes. Climate-induced shifts in river discharge regimes, including seasonal flow variations, act as positive and negative feedbacks in influencing river water temperature and SSC. Differences in temperature and heating regimes between rivers and lakes in turn result in large seasonal shifts in warming of downstream lakes. The extent of this repressive effect on warming is controlled by the lakes hydraulic residence time. Previous studies suggest that climate change will diminish deep-water oxygen renewal in lakes. We find that climate-related seasonal variations in river temperatures and SSC shift deep penetrating river intrusions from summer towards winter. Thus potentially counteracting the otherwise negative effects associated with climate change on deep-water oxygen content. Our findings provide a template for evaluating the response of similar hydrologic systems to on-going climate change. © Author(s) 2018.
语种	英语
scopus关键词	Atmospheric temperature; Lakes; Rivers; Suspended sediments; Temperature; Water resources; Anthropogenic heat source; Deterministic models; Hydraulic residence time; Hydrologic systems; Seasonal flow variations; Seasonal variation; Suspended sediment concentrations; Water temperatures; Climate change; air temperature; anthropogenic source; climate change; climate forcing; climate modeling; environmental response; fluvial process; heat source; hydrological regime; lake water; river discharge; river water; stratification; temperature effect; tributary; water temperature; Aare River; Bern [Switzerland]; Bielersee; Lake Geneva; Rhone River; Switzerland
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160165
作者单位	Vinnä, L.R., Physics of Aquatic Systems Laboratory - Margaretha Kamprad Department, École Polytechnique Fédérale de Lausanne, Institute of Environmental Engineering, Lausanne, Switzerland; Wüest, A., Physics of Aquatic Systems Laboratory - Margaretha Kamprad Department, École Polytechnique Fédérale de Lausanne, Institute of Environmental Engineering, Lausanne, Switzerland, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Surface Waters - Research and Management, Kastanienbaum, Switzerland; Zappa, M., Swiss Federal Institute for Forest, Snow and Landscape Research, WSL, Birmensdorf, Switzerland; Fink, G., Center for Environmental Systems Research, CESR, University of Kassel, Kassel, Germany; Bouffard, D., Physics of Aquatic Systems Laboratory - Margaretha Kamprad Department, École Polytechnique Fédérale de Lausanne, Institute of Environmental Engineering, Lausanne, Switzerland, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Surface Waters - Research and Management, Kasta...
推荐引用方式 GB/T 7714	Vinnä L.R.,Wüest A.,Zappa M.,et al. Tributaries affect the thermal response of lakes to climate change[J],2018,22(1).
APA	Vinnä L.R.,Wüest A.,Zappa M.,Fink G.,&Bouffard D..(2018).Tributaries affect the thermal response of lakes to climate change.Hydrology and Earth System Sciences,22(1).
MLA	Vinnä L.R.,et al."Tributaries affect the thermal response of lakes to climate change".Hydrology and Earth System Sciences 22.1(2018).