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了解全球地下水与气候的相互作用

Christopher E Ndehedehe¹, Oluwafemi E Adeyeri², Alex O Onojeghuo³

¹School of Environment & Science, Griffith University, Nathan, QLD 4111, Australia; Australian Rivers Institute, Griffith University, Nathan, QLD 4111, Australia.

The Science of the total environment

|August 30, 2023

概括

全球气候变化对全球地下水补充和水的可用性产生重大影响. 了解这些联系,就像太平洋十年振荡一样.

科学领域:

水文学和气候学
环境科学环境科学
水资源管理水资源管理

背景情况:

全球变暖加剧了水文极端现象,影响了可用水和地下水资源.
了解气候对地下水的影响对于水政策和淡水供应管理至关重要.
干旱等水文极端事件加剧了水资源获取方面的社会不平等.

研究的目的:

增强对气候变化对全球地下水系统的影响的理解.
评估地下水对气候变化的反应,并确定地下水与气候相互作用的热点.
探索气候远程连接在调节全球地下水流中的作用.

主要方法:

使用了统计分析,包括多线性回归和波形分析.
该研究分析了从2003年到2017年的地下水气候相互作用.
评估了地下水充电和降雨之间的关系,以及气候远程连接.

主要成果:

气候变化显著影响地下水补充,在亚马逊和刚果盆地等地区观察到强烈的地下水-降雨关系.
在干旱地区没有发现与化石地下水的直接关系,例如努比亚砂岩含水层.
全球气候远程连接,特别是太平洋十年振荡 (PDO),强烈调节全球地下水流,PDO显示最强的相关性 (r=0.80).

结论:

气候变化是全球地下水补充和分配的关键驱动力.
太平洋气候模式,特别是PDO,为预测气候变化对淡水系统的影响提供了潜力.
干旱地区在干旱期间面临地下水短缺,影响了地表地下水相互作用和水的可用性.

关键词:

气候远程连接气候远程连接干旱干旱在干旱中水文学的水文学补充充电的情况.表面的水是表面的水.

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