气候变化领域集成服务门户(CCPortal): Modeling groundwater responses to climate change in the Prairie Pothole Region

CCPortal

DOI	10.5194/hess-24-655-2020
	Modeling groundwater responses to climate change in the Prairie Pothole Region
	Zhang Z.; Li Y.; Barlage M.; Chen F.; Miguez-Macho G.; Ireson A.; Li Z.
发表日期	2020
ISSN	1027-5606
起始页码	655
结束页码	672
卷号	24 期号:2
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.
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
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159501
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
推荐引用方式 GB/T 7714	Zhang Z.,Li Y.,Barlage M.,et al. Modeling groundwater responses to climate change in the Prairie Pothole Region[J],2020,24(2).
APA	Zhang Z..,Li Y..,Barlage M..,Chen F..,Miguez-Macho G..,...&Li Z..(2020).Modeling groundwater responses to climate change in the Prairie Pothole Region.Hydrology and Earth System Sciences,24(2).
MLA	Zhang Z.,et al."Modeling groundwater responses to climate change in the Prairie Pothole Region".Hydrology and Earth System Sciences 24.2(2020).