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Climate Change Impact on the Hydrology of a Typical Watershed in the Tianshan Mountains
Fang G. H.; Yang, J.; Chen, Y. N.; Zhang, S. H.; Deng, H. J.; Liu, H. M.; De Maeyer, P.
Source PublicationAdvances in Meteorology
Keywordheadwater catchment northwest china central-asia arid region river-basin tien-shan model future runoff uncertainty
AbstractTo study the impact of future climatic changes on hydrology in the Kaidu River Basin in the Tianshan Mountains, two sets of future climatic data were used to force a well-calibrated hydrologic model: one is bias-corrected regional climate model (RCM) outputs for RCP4.5 and RCP8.5 future emission scenarios, and the other is simple climate change (SCC) with absolute temperature change of -1 similar to 6 degrees C and relative precipitation change of -20%similar to 60%. Results show the following: (1) temperature is likely to increase by 2.2 degrees C and 4.6 degrees C by the end of the 21st century under RCP4.5 and RCP8.5, respectively, while precipitation will increase by 2%similar to 24%, with a significant rise in the dry season and small change in the wet season; (2) flow will change by -1%similar to 20%, while evapotranspiration will increase by 2%similar to 24%; (3) flow increases almost linearly with precipitation, while its response to temperature depends on the magnitude of temperature change and flow decrease is significant when temperature increase is greater than 2 degrees C; (4) similar results were obtained for simulations with RCM outputs and with SCC for mild climate change conditions, while results were significantly different for intense climate change conditions.
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GB/T 7714
Fang G. H.,Yang, J.,Chen, Y. N.,et al. Climate Change Impact on the Hydrology of a Typical Watershed in the Tianshan Mountains. 2015.
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