globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-655-2020
论文题名:
Modeling groundwater responses to climate change in the Prairie Pothole Region
作者: Zhang Z.; Li Y.; Barlage M.; Chen F.; Miguez-Macho G.; Ireson A.; Li Z.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:2
起始页码: 655
结束页码: 672
语种: 英语
Scopus关键词: Climate models ; Recharging (underground waters) ; Soils ; Ground water recharge ; Groundwater modeling ; Groundwater simulations ; Hydrological cycles ; Land surface models ; Seasonal variation ; Shallow groundwater ; Water table depths ; Climate change ; White tip die-back phytoplasma
英文摘要: Shallow groundwater in the Prairie Pothole Region (PPR) is predominantly recharged by snowmelt in the spring and supplies water for evapotranspiration through the summer and fall. This two-way exchange is underrepresented in current land surface models. Furthermore, the impacts of climate change on the groundwater recharge rates are uncertain. In this paper, we use a coupled land-groundwater model to investigate the hydrological cycle of shallow groundwater in the PPR and study its response to climate change at the end of the 21st century. The results show that the model does a reasonably good job of simulating the timing of recharge. The mean water table depth (WTD) is well simulated, except for the fact that the model predicts a deep WTD in northwestern Alberta. The most significant change under future climate conditions occurs in the winter, when warmer temperatures change the rain/snow partitioning, delaying the time for snow accumulation/soil freezing while advancing early melting/thawing. Such changes lead to an earlier start to a longer recharge season but with lower recharge rates. Different signals are shown in the eastern and western PPR in the future summer, with reduced precipitation and drier soils in the east but little change in the west. The annual recharge increased by 25&% and 50&% in the eastern and western PPR, respectively. Additionally, we found that the mean and seasonal variation of the simulated WTD are sensitive to soil properties; thus, fine-scale soil information is needed to improve groundwater simulation on the regional scale. © 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/162791
Appears in Collections:气候变化与战略

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作者单位: Zhang, Z., Global Institute for Water Security, University of Saskatchewan, Saskatoon, SK, Canada, School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK, Canada; Li, Y., Global Institute for Water Security, University of Saskatchewan, Saskatoon, SK, Canada, School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK, Canada; Barlage, M., National Center for Atmospheric Research, Boulder, CO, United States; Chen, F., National Center for Atmospheric Research, Boulder, CO, United States; Miguez-Macho, G., Nonlinear Physics Group, Faculty of Physics, Universidade de Santiago de Compostela, Galicia, Spain; Ireson, A., Global Institute for Water Security, University of Saskatchewan, Saskatoon, SK, Canada, School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK, Canada; Li, Z., Global Institute for Water Security, University of Saskatchewan, Saskatoon, SK, Canada

Recommended Citation:
Zhang Z.,Li Y.,Barlage M.,et al. Modeling groundwater responses to climate change in the Prairie Pothole Region[J]. Hydrology and Earth System Sciences,2020-01-01,24(2)
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