气候变化领域集成服务门户(CCPortal): Long-term changes in central European river discharge for 1869-2016: Impact of changing snow covers; reservoir constructions and an intensified hydrological cycle

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DOI	10.5194/hess-24-1721-2020
	Long-term changes in central European river discharge for 1869-2016: Impact of changing snow covers; reservoir constructions and an intensified hydrological cycle
	Rottler E.; Francke T.; Bürger G.; Bronstert A.
发表日期	2020
ISSN	1027-5606
起始页码	1721
结束页码	1740
卷号	24 期号:4
英文摘要	Recent climatic changes have the potential to severely alter river runoff, particularly in snow-dominated river basins. Effects of changing snow covers superimpose with changes in precipitation and anthropogenic modifications of the watershed and river network. In the attempt to identify and disentangle long-term effects of different mechanisms, we employ a set of analytical tools to extract long-term changes in river runoff at high resolution. We combine quantile sampling with moving average trend statistics and empirical mode decomposition and apply these tools to discharge data recorded along rivers with nival, pluvial and mixed flow regimes as well as temperature and precipitation data covering the time frame 1869-2016. With a focus on central Europe, we analyse the long-term impact of snow cover and precipitation changes along with their interaction with reservoir constructions. Our results show that runoff seasonality of snow-dominated rivers decreases. Runoff increases in winter and spring, while discharge decreases in summer and at the beginning of autumn. We attribute this redistribution of annual flow mainly to reservoir constructions in the Alpine ridge. During the course of the last century, large fractions of the Alpine rivers were dammed to produce hydropower. In recent decades, runoff changes induced by reservoir constructions seem to overlap with changes in snow cover. We suggest that Alpine signals propagate downstream and affect runoff far outside the Alpine area in river segments with mixed flow regimes. Furthermore, our results hint at more (intense) rainfall in recent decades. Detected increases in high discharge can be traced back to corresponding changes in precipitation.. © 2020 BMJ Publishing Group. All rights reserved.
语种	英语
scopus关键词	Reservoirs (water); Rivers; Sampling; Snow; Anthropogenic modification; Different mechanisms; Empirical Mode Decomposition; Hydrological cycles; Long-term impacts; Precipitation change; Precipitation data; Reservoir constructions; Runoff; decomposition analysis; hydrological cycle; long-term change; precipitation (climatology); rainfall; reservoir; river discharge; runoff; seasonality; snow cover; watershed; Europe
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/159445
作者单位	Rottler, E., Institute of Environmental Science and Geography, University of Potsdam, Karl-Liebknecht-Straße 24-25, Potsdam, 14476, Germany; Francke, T., Institute of Environmental Science and Geography, University of Potsdam, Karl-Liebknecht-Straße 24-25, Potsdam, 14476, Germany; Bürger, G., Institute of Environmental Science and Geography, University of Potsdam, Karl-Liebknecht-Straße 24-25, Potsdam, 14476, Germany; Bronstert, A., Institute of Environmental Science and Geography, University of Potsdam, Karl-Liebknecht-Straße 24-25, Potsdam, 14476, Germany
推荐引用方式 GB/T 7714	Rottler E.,Francke T.,Bürger G.,et al. Long-term changes in central European river discharge for 1869-2016: Impact of changing snow covers; reservoir constructions and an intensified hydrological cycle[J],2020,24(4).
APA	Rottler E.,Francke T.,Bürger G.,&Bronstert A..(2020).Long-term changes in central European river discharge for 1869-2016: Impact of changing snow covers; reservoir constructions and an intensified hydrological cycle.Hydrology and Earth System Sciences,24(4).
MLA	Rottler E.,et al."Long-term changes in central European river discharge for 1869-2016: Impact of changing snow covers; reservoir constructions and an intensified hydrological cycle".Hydrology and Earth System Sciences 24.4(2020).