Groundwater level response in US principal aquifers to ENSO, NAO, PDO, and AMO
Groundwater level response in US principal aquifers to ENSO, NAO, PDO, and AMO
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DOI：
10.1016/j.jhydrol.2014.09.069
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发表时间：
2014-11-27
影响因子：
6.4
通讯作者：
Gurdak, Jason J.
中科院分区：
文献类型：
--
作者：
Kuss, Amber Jean M.;Gurdak, Jason J.
地下水将在社会适应气候多变性和变化方面发挥重要作用。因此，了解地下水与年际至数十年气候变率的遥相关性尤为重要，因为这对水资源管理具有明显的近期影响。在这里，我们使用奇异谱分析（SSA），小波相干分析和滞后相关来量化厄尔尼诺南方涛动（ENSO）的影响。北大西洋涛动（NAO）（3-6年周期），太平洋十年涛动（PDO）（15-25年周期）和大西洋多年代际振荡（AMO）（50-70年周期）对整个区域广泛的中央谷、盆地和山脉的降水和地下水位的影响，和美国北大西洋沿岸平原主要含水层（PA）。结果进行了比较，从一个类似的高平原含水层的气候变率研究的最新发现，提供第一个国家规模的评估年际到几十年的气候变率对地下水资源的影响在美国PA。结果表明，地下水位部分控制年际到几十年的气候变率，并不仅仅是一个功能的时间模式抽水。ENSO和PDO比NAO和AMO对美国各地地下水位的变化有更大的控制，特别是在西部和中部保护区。这里提出的研究结果和方法扩展了知识和可用的创新方法工具箱，可供管理人员和科学家使用，以改善未来气候不确定性下的地下水资源规划和运营。(C)2014爱思唯尔有限公司版权所有。
Groundwater will play an important role in society's adaptation to climate variability and change. Therefore, it is particularly important to understand teleconnections in groundwater with interannual to multidecadal climate variability because of the tangible and near-term implications for water-resource management. Here we use singular spectrum analysis (SSA), wavelet coherence analysis, and lag correlation to quantify the effects of the El Nino Southern Oscillation (ENSO) (2-7 year cycle), North Atlantic Oscillation (NAO) (3-6 year cycle), Pacific Decadal Oscillation (PDO) (15-25 year cycle), and Atlantic Multidecadal Oscillation (AMO) (50-70 year cycle) on precipitation and groundwater levels across the regionally extensive Central Valley, Basin and Range, and North Atlantic Coastal Plain principal aquifers (PAs) of the United States (U.S.). Results are compared to recent findings from a similar climate variability study of the High Plains aquifer to provide the first national-scale assessment of the effects of interannual to multidecadal climate variability on groundwater resources in U.S. PAs. The results indicate that groundwater levels are partially controlled by interannual to multidecadal climate variability and are not solely a function of temporal patterns in pumping. ENSO and PDO have a greater control than NAO and AMO on variability in groundwater levels across the U.S., particularly in the western and central PAs. Findings and methods presented here expand the knowledge and usable toolbox of innovative approaches that can be used by managers and scientists to improve groundwater resource planning and operations under future climate uncertainty. (C) 2014 Elsevier B.V. All rights reserved.