气候变化领域集成服务门户(CCPortal): Evaluating the cumulative rainfall deviation approach for projecting groundwater levels under future climate

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DOI	10.2166/wcc.2013.068
	Evaluating the cumulative rainfall deviation approach for projecting groundwater levels under future climate
	Emelyanova I.; Ali R.; Dawes W.; Varma S.; Hodgson G.; McFarlane D.
发表日期	2013
ISSN	20402244
起始页码	317
结束页码	337
卷号	4 期号:4
英文摘要	In south-western Australia (SWA) groundwater levels have been declining under the changing climate associated with a decline of rainfall. Possible future groundwater yields in SWA have been estimated under a range of climate change scenarios using a number of numerical groundwater models. For the Northern Perth Basin (NPB) in SWA, where no groundwater models were available, a relatively simple statistical method CDFM (Cumulative Deviation from Mean) has been applied using HARTT (Hydrograph Analysis and Rainfall Time Trends), an automated derivation of the CDFM. This study has evaluated the potential of the CDFM to project groundwater levels under various future climate scenarios in the NPB. Firstly, HARTT projections were validated by comparing with the modelled hydrographs in areas where numerical groundwater models were available. It was evident that HARTT may overestimate future declines or rises in groundwater levels depending on the time a new climate regime is imposed on the model. Secondly, HARTT was applied to suitable bores in the NPB under future climate scenarios. HARTT projected a slight decline under a drier future climate than under the historical future climate and a moderate or slight rise in groundwater levels under a wetter future climate. If historical climatic conditions continue until 2030, groundwater levels are expected to slightly rise in the NPB. © CSIRO 2013.
英文关键词	CDFM; Climate change; Groundwater hydrographs; Groundwater modelling; HARTT; Hydrograph analysis
语种	英语
scopus关键词	CDFM; Groundwater modelling; HARTT; Hydrograph analysis; Hydrographs; Climate change; Climate models; Rain; Groundwater; climate change; climate conditions; groundwater; hydrograph; numerical model; rainfall; water level; Australia; Perth Basin; Western Australia
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/148300
作者单位	CSIRO Land and Water, Private Bag 5, Wembley, WA 6913, Australia; CSIRO Earth Science and Resource Engineering, PO Box 1130, Bentley, WA 6102, Australia
推荐引用方式 GB/T 7714	Emelyanova I.,Ali R.,Dawes W.,et al. Evaluating the cumulative rainfall deviation approach for projecting groundwater levels under future climate[J],2013,4(4).
APA	Emelyanova I.,Ali R.,Dawes W.,Varma S.,Hodgson G.,&McFarlane D..(2013).Evaluating the cumulative rainfall deviation approach for projecting groundwater levels under future climate.Journal of Water and Climate Change,4(4).
MLA	Emelyanova I.,et al."Evaluating the cumulative rainfall deviation approach for projecting groundwater levels under future climate".Journal of Water and Climate Change 4.4(2013).