globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-1721-2020
论文题名:
Long-term changes in central European river discharge for 1869-2016: Impact of changing snow covers; reservoir constructions and an intensified hydrological cycle
作者: Rottler E.; Francke T.; Bürger G.; Bronstert A.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:4
起始页码: 1721
结束页码: 1740
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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162735
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Hydrology and Earth System Sciences,2020-01-01,24(4)
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