气候变化领域集成服务门户(CCPortal): Understanding the potential of climate teleconnections to project future groundwater drought

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DOI	10.5194/hess-23-3233-2019
	Understanding the potential of climate teleconnections to project future groundwater drought
	Rust W.; Holman I.; Bloomfield J.; Cuthbert M.; Corstanje R.
发表日期	2019
ISSN	1027-5606
起始页码	3233
结束页码	3245
卷号	23 期号:8
英文摘要	Predicting the next major drought is of paramount interest to water managers globally. Estimating the onset of groundwater drought is of particular importance, as groundwater resources are often assumed to be more resilient when surface water resources begin to fail. A potential source of long-term forecasting is offered by possible periodic controls on groundwater level via teleconnections with oscillatory ocean-atmosphere systems. However, relationships between large-scale climate systems and regional to local-scale rainfall, evapotranspiration (ET) and groundwater are often complex and non-linear so that the influence of long-term climate cycles on groundwater drought remains poorly understood. Furthermore, it is currently unknown whether the absolute contribution of multi-annual climate variability to total groundwater storage is significant. This study assesses the extent to which multi-annual variability in groundwater can be used to indicate the timing of groundwater droughts in the UK. Continuous wavelet transforms show how repeating teleconnection-driven 7-year and 16-32-year cycles in the majority of groundwater sites from all the UK's major aquifers can systematically control the recurrence of groundwater drought; and we provide evidence that these periodic modes are driven by teleconnections. Wavelet reconstructions demonstrate that multi-annual periodicities of the North Atlantic Oscillation, known to drive North Atlantic meteorology, comprise up to 40 % of the total groundwater storage variability. Furthermore, the majority of UK recorded droughts in recent history coincide with a minimum phase in the 7-year NAO-driven cycles in groundwater level, providing insight into drought occurrences on a multi-annual timescale. Long-range groundwater drought forecasts via climate teleconnections present transformational opportunities to drought prediction and its management across the North Atlantic region. © 2019 Author(s).
语种	英语
scopus关键词	Aquifers; Atmospheric pressure; Drought; Hydrogeology; Oceanography; Surface water resources; Surface waters; Water conservation; Wavelet transforms; Weather forecasting; Annual variability; Climate variability; Continuous Wavelet Transform; Groundwater storage; Long-term forecasting; North Atlantic oscillations; Ocean-atmosphere system; Wavelet reconstruction; Groundwater resources; aquifer; atmosphere-ocean coupling; climate change; climate cycle; drought; evapotranspiration; groundwater; groundwater resource; North Atlantic Oscillation; rainfall; surface water; teleconnection; Atlantic Ocean; Atlantic Ocean (North); United Kingdom
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/159633
作者单位	Rust, W., Cranfield Water Science Institute (CWSI), Cranfield University, Bedford, MK43 0AL, United Kingdom; Holman, I., Cranfield Water Science Institute (CWSI), Cranfield University, Bedford, MK43 0AL, United Kingdom; Bloomfield, J., British Geological Survey, Wallingford, OX10 8ED, United Kingdom; Cuthbert, M., School of Earth and Ocean Sciences, Cardiff University, Park Place, Cardiff, CF10 3AT, United Kingdom; Corstanje, R., Centre for Environment and Agricultural Informatics, Cranfield University, Bedford, MK43 0AL, United Kingdom
推荐引用方式 GB/T 7714	Rust W.,Holman I.,Bloomfield J.,et al. Understanding the potential of climate teleconnections to project future groundwater drought[J],2019,23(8).
APA	Rust W.,Holman I.,Bloomfield J.,Cuthbert M.,&Corstanje R..(2019).Understanding the potential of climate teleconnections to project future groundwater drought.Hydrology and Earth System Sciences,23(8).
MLA	Rust W.,et al."Understanding the potential of climate teleconnections to project future groundwater drought".Hydrology and Earth System Sciences 23.8(2019).