Analysis of current trends in climate parameters,river discharge and glaciers in the Aksu River basin (Central Asia) |
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| Authors: | Valentina Krysanova Michel Wortmann Tobias Bolch Bruno Merz Doris Duethmann Judith Walter |
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| Institution: | 1. Potsdam Institute for Climate Impact Research, Potsdam, Germanykrysanova@pik-potsdam.de;3. Potsdam Institute for Climate Impact Research, Potsdam, Germany;4. Institute for Cartography, Technische Universit?t Dresden, Dresden, Germany;5. Department of Geography, University of Zürich, Zürich, Switzerland;6. GFZ German Research Centre for Geosciences, Potsdam, Germany |
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| Abstract: | AbstractClimate variability and change play a crucial role in the vulnerable system of the Aksu River basin located in Kyrgyzstan and northwest China, providing precious water resources for the intense oasis agriculture of the Xinjiang Province (China). Ubiquitous warming and increase in precipitation (in the lower part of the basin) have been detected. Glaciers in the region are retreating. Seasonal trends in river discharge show an increase. A clear link could be demonstrated between daily temperature and lagged river discharge at two headwater stations in summer. However, the correlation breaks over short periods in the end of summer or beginning of autumn at the Xiehela station, when the high (over 95th percentile) flow peaks caused by the glacier lake outburst floods of the Merzbacher Lake occur. This feature is a challenge for the climate impact assessment in the region, as these regular outbursts have to be represented in the projections for the future as well. Editor D. Koutsoyiannis |
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| Keywords: | Aksu River basin trend analysis climate parameters river discharge glaciers glacier lake outburst floods |
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