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Updated: Jun 9, 2025

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全球陆地水循环中的非静态性及其在人类世时期的相互联系

Wanshu Nie^1,2,3, Sujay V Kumar¹, Augusto Getirana^1,2

¹Hydrological Sciences Lab, National Aeronautics and Space Administration (NASA) Goddard Space Flight Center, Greenbelt, MD 20771.

Proceedings of the National Academy of Sciences of the United States of America

|October 28, 2024

概括

气候变化导致全球水循环发生变化,影响35%的人口和45%的灌土地. 了解这些非静止过程对于水资源管理和气候适应性至关重要.

科学领域:

地球系统科学地球系统科学
水文学的水文学
遥感遥感遥感遥感

背景情况:

全球淡水循环受到气候变化和人类活动的影响.
不稳定的过程和水资源分布的变化带来了挑战.
对这些水文变化的全面理解仍然是难以捉摸的.

研究的目的:

开发一种基于遥感的地面再分析技术.
评估全球水循环组件之间的非静止性和相互连接 (2003-2020年).
确定影响水资源的关键区域和主要变化类型.

主要方法:

开发了一个基于遥感的地面再分析数据集.
分析了全球水循环的组成部分,包括陆地储水,降水,蒸发,排水和初级生产总量.
识别和描述非静止模式及其主导类型 (长期趋势,季节性变化,极端变化).

主要成果:

突出了20个热点地区,陆地储水的不稳定性很强,影响全球35%的人口和45%的灌农业.
确定新兴的长期趋势 (48.2%) 是主要的非静止模式,其次是季节性变化 (32.8%) 和极端变化 (19%).
在不同的水循环组件中观察到不同的非静止性模式,并在热点区域中观察到独特的表现,特别是在中度地区 (亚洲和北美).

结论:

这些发现强调了在评估水循环时考虑非静态性的至关重要.
强调需要制定战略,解决可持续的水资源使用和应对极端事件的弹性问题.
强调了水循环组件对气候变化和人类水资源管理的复杂反应.

关键词:

气候变化气候变化气候变化数据同化数据同化全球水循环的全球水循环.人类干扰的人类干扰.不稳定性的不稳定性

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