Impacts of climate change on streamflow in the upper Yangtze River basin

Buda Su, Jinlong Huang, Xiaofan Zeng (), Chao Gao and Tong Jiang ()
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Buda Su: Chinese Academy of Sciences
Jinlong Huang: Chinese Academy of Sciences
Xiaofan Zeng: Huazhong University of Science and Technology
Chao Gao: Anhui Normal University
Tong Jiang: Nanjing University of Information Science &Technology

Climatic Change, 2017, vol. 141, issue 3, No 12, 533-546

Abstract: Abstract The impacts of climate change on streamflow in the upper Yangtze River basin were studied using four hydrological models driven by bias-corrected climate projections from five General Circulation Models under four Representative Concentration Pathways. The basin hydrological responses to climate forcing in future mid-century (2036–2065) and end-century (2070–2099) periods were assessed via comparison of simulation results in these periods to those in the reference period (1981–2010). An analysis of variance (ANOVA) approach was used to quantify the uncertainty sources associated with the climate inputs and hydrological model structures. Overall, the annual average discharge, seasonal high flow, and daily peak discharge were projected to increase in most cases in the twenty-first century but with considerable variability between models under the conditions of increasing temperature and a small to moderate increase in precipitation. Uncertainties in the projections increase over the time and are associated with hydrological model structures, but climate inputs represent the largest source of uncertainty in the upper Yangtze projections. This study assessed streamflow projections without considering water management practices within the basin.

Keywords: Hydrological modeling; Climate change; Uncertainty; The upper Yangtze River (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (9)

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DOI: 10.1007/s10584-016-1852-5

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