从全球气候变化角度看2021年河南“7·20”特大暴雨

Examining “7·20” Extreme rainstorm disaster in Henan Province in 2021 from global warming perspective

2021年7月17-23日,河南多地发生极端强降水,这次特大暴雨过程累计雨量大、强降水范围广、降水极端性强、短时强降水时段集中、持续时间长。河南“7·20”特大暴雨是东亚大气环流异常协同作用的直接结果,也是全球气候变暖背景下极端强降水事件频发的具体表现。近年来全球暴雨洪涝、高温热浪、干旱、台风等气象灾害频发强发,极端事件对经济社会发展造成的影响趋于严重,我国应对极端天气气候事件需坚持综合应对、科学应对、有效应对,不断提升应对极端灾害的能力。

Extreme rainstorm occurred in multiple places in Henan province from July 17 to 23, 2021. This extreme rainstorm process was characterized by large accumulative rainfall amount, wide coverage, strong precipitation extremes, concentrated periods and long duration of short-range rainstorm. The "7 · 20" extreme rainstorm in Henan is a direct result of collaborative effects of abnormal atmospheric circulations over East Asia, and also a specific manifestation of frequent extreme rainfall events under the background of global warming. In recent years, meteorological disasters such as rainstorms, floods, high temperature and heat waves, droughts, typhoons and so on have frequently occurred all over the world, and the impact of extreme events on economic and social development tends to be more serious. China should respond to these extreme weather and climate events in a comprehensive, scientific and effective manner, and continuously improve the ability to cope with extreme disasters.