降水
环境科学
气候变化
生态系统
气候学
气候变异性
大气(单位)
大气科学
地理
地质学
气象学
海洋学
生态学
生物
作者
Wenxia Zhang,Tianjun Zhou,Peili Wu
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2024-07-26
卷期号:385 (6707): 427-432
被引量:1
标识
DOI:10.1126/science.adp0212
摘要
As the climate warms, the consequent moistening of the atmosphere increases extreme precipitation. Precipitation variability should also increase, producing larger wet-dry swings, but that is yet to be confirmed observationally. Here we show that precipitation variability has already grown globally (over 75% of land area) over the past century, as a result of accumulated anthropogenic warming. The increased variability is seen across daily to intraseasonal timescales, with daily variability increased by 1.2% per 10 years globally, and is particularly prominent over Europe, Australia, and eastern North America. Increased precipitation variability is driven mainly by thermodynamics linked to atmospheric moistening, modulated at decadal timescales by circulation changes. Amplified precipitation variability poses new challenges for weather and climate predictions, as well as for resilience and adaptation by societies and ecosystems.
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