气候变化领域集成服务门户(CCPortal): Assessing water demands and coverage sensitivity to climate change in the urban and rural sectors in central Chile

CCPortal

DOI	10.2166/wcc.2014.019
	Assessing water demands and coverage sensitivity to climate change in the urban and rural sectors in central Chile
	Meza F.J.; Vicuña S.; Jelinek M.; Bustos E.; Bonelli S.
发表日期	2014
ISSN	20402244
起始页码	192
结束页码	203
卷号	5 期号:2
英文摘要	Snow dominated basins in the subtropics are susceptible to climate change, since evaporation and streamflows are affected, impacting key water sectors and increasing the risk of water shortages. This paper shows an integrated assessment of the impacts of climate change on the major water users in the Maipo Basin of Chile, allowing a direct comparison between competing sectors, describing their sensitivity to future climate changes instead of focusing on individual scenarios, and assessing the effect of likely responses, such as pumping, that impact groundwater levels. We developed a statistical downscaling mechanism to correct biases in global circulation model projections and ran a hydrological model to determine the impacts of climate change on the ability of the system to meet water demands. Mean coverage and minimum coverage of urban and agricultural sectors are sensitive to climate change, particularly to larger changes in precipitation. The urban sector is less sensitive because of higher reliability standards and holds a greater fraction of water-use rights in comparison to actual withdrawals. In addition, groundwater pumping represents an additional source of water to meet population demands. However, this favorable condition could no longer be present if climate change also affects aquifer recharge dynamics. © IWA Publishing 2014.
英文关键词	Climate change; Hydrological models; Multiple water users; Water rights
语种	英语
scopus关键词	Aquifers; Hydrology; Water supply; Global circulation model; Hydrological modeling; Hydrological models; Integrated assessment; Reliability standard; Statistical downscaling; Water rights; Water users; Climate change; climate change; downscaling; flow modeling; hydrological modeling; hydrological response; streamflow; water demand; water supply; water use; Chile; Maipo Basin
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148287
作者单位	Centro Interdisciplinario de Cambio Global UC, Pontificia Universidad Católica de Chile, Santiago, Chile; Departamento de Ecosistemas y Medio Ambiente, Pontificia Universidad Católica de Chile, Santiago, Chile
推荐引用方式 GB/T 7714	Meza F.J.,Vicuña S.,Jelinek M.,et al. Assessing water demands and coverage sensitivity to climate change in the urban and rural sectors in central Chile[J],2014,5(2).
APA	Meza F.J.,Vicuña S.,Jelinek M.,Bustos E.,&Bonelli S..(2014).Assessing water demands and coverage sensitivity to climate change in the urban and rural sectors in central Chile.Journal of Water and Climate Change,5(2).
MLA	Meza F.J.,et al."Assessing water demands and coverage sensitivity to climate change in the urban and rural sectors in central Chile".Journal of Water and Climate Change 5.2(2014).