Seasonal differences in future climate and streamflow variation in a watershed of Northern China

Study region: The Chaohe watershed is a meso-scale watershed in northern China, and the primary reservoir watershed for Beijing's drinking water supply. Study focus: This research aims to evaluate the effects of climate change on future seasonal streamflow regimes and understand the challenges...

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Autores principales:	Wenxu Cao, Zhiqiang Zhang, Yongqiang Liu, Lawrence E. Band, Shengping Wang, Hang Xu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Climate change Hydrological regime RHESSys Summer season Return period Watershed management Physical geography GB3-5030 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/bc9ceb02bf1d4de3b0cebeec0b4a277c
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spelling	oai:doaj.org-article:bc9ceb02bf1d4de3b0cebeec0b4a277c2021-11-14T04:33:04ZSeasonal differences in future climate and streamflow variation in a watershed of Northern China2214-581810.1016/j.ejrh.2021.100959https://doaj.org/article/bc9ceb02bf1d4de3b0cebeec0b4a277c2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214581821001889https://doaj.org/toc/2214-5818Study region: The Chaohe watershed is a meso-scale watershed in northern China, and the primary reservoir watershed for Beijing's drinking water supply. Study focus: This research aims to evaluate the effects of climate change on future seasonal streamflow regimes and understand the challenges to watershed management. The Regional Hydro-Ecological Simulation System (RHESSys) was applied to investigate the watershed's future hydrographic characteristics under the forcing of the downscaled precipitation and temperature projected by General Circulation Models (GCMs) under three emissions scenarios. New hydrological insights for the region: The future climate exhibits a drier and warmer trend in the summer monsoon period contrasting with other seasons in the watershed. Precipitation will decrease by 47.5–57.2 mm during the summer monsoon period while increasing annually. Future summer streamflow will decrease accordingly, which is also driven by increased evapotranspiration due to rising temperature. An increased dispersion coefficient of streamflow also indicates more dramatic variations in summer. The annual streamflow magnitude with a 5-year return period increases significantly (p < 0.01), indicating a reduced risk for future water shortages. However, the magnitude of streamflow will decrease with the prolonged return periods (p < 0.01). This study emphasizes the critical significance of predicting the seasonal variability of streamflow and other hydrological property changes at the local scale to provide valuable information for developing adaptive resource management and hazard relief strategies.Wenxu CaoZhiqiang ZhangYongqiang LiuLawrence E. BandShengping WangHang XuElsevierarticleClimate changeHydrological regimeRHESSysSummer seasonReturn periodWatershed managementPhysical geographyGB3-5030GeologyQE1-996.5ENJournal of Hydrology: Regional Studies, Vol 38, Iss , Pp 100959- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Climate change Hydrological regime RHESSys Summer season Return period Watershed management Physical geography GB3-5030 Geology QE1-996.5
spellingShingle	Climate change Hydrological regime RHESSys Summer season Return period Watershed management Physical geography GB3-5030 Geology QE1-996.5 Wenxu Cao Zhiqiang Zhang Yongqiang Liu Lawrence E. Band Shengping Wang Hang Xu Seasonal differences in future climate and streamflow variation in a watershed of Northern China
description	Study region: The Chaohe watershed is a meso-scale watershed in northern China, and the primary reservoir watershed for Beijing's drinking water supply. Study focus: This research aims to evaluate the effects of climate change on future seasonal streamflow regimes and understand the challenges to watershed management. The Regional Hydro-Ecological Simulation System (RHESSys) was applied to investigate the watershed's future hydrographic characteristics under the forcing of the downscaled precipitation and temperature projected by General Circulation Models (GCMs) under three emissions scenarios. New hydrological insights for the region: The future climate exhibits a drier and warmer trend in the summer monsoon period contrasting with other seasons in the watershed. Precipitation will decrease by 47.5–57.2 mm during the summer monsoon period while increasing annually. Future summer streamflow will decrease accordingly, which is also driven by increased evapotranspiration due to rising temperature. An increased dispersion coefficient of streamflow also indicates more dramatic variations in summer. The annual streamflow magnitude with a 5-year return period increases significantly (p < 0.01), indicating a reduced risk for future water shortages. However, the magnitude of streamflow will decrease with the prolonged return periods (p < 0.01). This study emphasizes the critical significance of predicting the seasonal variability of streamflow and other hydrological property changes at the local scale to provide valuable information for developing adaptive resource management and hazard relief strategies.
format	article
author	Wenxu Cao Zhiqiang Zhang Yongqiang Liu Lawrence E. Band Shengping Wang Hang Xu
author_facet	Wenxu Cao Zhiqiang Zhang Yongqiang Liu Lawrence E. Band Shengping Wang Hang Xu
author_sort	Wenxu Cao
title	Seasonal differences in future climate and streamflow variation in a watershed of Northern China
title_short	Seasonal differences in future climate and streamflow variation in a watershed of Northern China
title_full	Seasonal differences in future climate and streamflow variation in a watershed of Northern China
title_fullStr	Seasonal differences in future climate and streamflow variation in a watershed of Northern China
title_full_unstemmed	Seasonal differences in future climate and streamflow variation in a watershed of Northern China
title_sort	seasonal differences in future climate and streamflow variation in a watershed of northern china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/bc9ceb02bf1d4de3b0cebeec0b4a277c
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_version_	1718429982725767168

Seasonal differences in future climate and streamflow variation in a watershed of Northern China

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