Analysis of the Composite Risk Grade for Multi Extreme Climate Events in China in Recent 60 Years

IF 3 Q2 METEOROLOGY & ATMOSPHERIC SCIENCES

Climate Pub Date : 2023-09-14 DOI:10.3390/cli11090191

Cunjie Zhang, Chan Xiao, Shuai Li, Yuyu Ren, Siqi Zhang, Xiuhua Cai, Zhujie Sangbu

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Abstract

Much attention has been given to the change rule of a single extreme event, and there are few reports on comprehensive characteristics of multiple extreme events in a certain region. Based on the analyzes of annual frequency of extreme high temperature, extreme low temperature, extreme drought, extreme precipitation, and extreme typhoon events in China from 1961 to 2020, a multi extreme events composite risk grade index (MXCI) was constructed and applied to the comprehensive characteristics analyzes of multiple extreme events in China. The results show that the high value areas of MXCI were mainly located in southeast China and southwest China. Over the past 60 years, the MXCI has shown a decreasing trend in western China and most of southeastern China, and an increasing trend in the middle zone from southwest China to northeast China. Through comparative analysis, MXCI can objectively reflect the comprehensive characteristics of multiple extreme climate events in a region, which is helpful to understand regional extreme climate characteristics and effectively cope with extreme climate risks.

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近60年来中国多次极端气候事件的综合风险等级分析

以往对单个极端事件变化规律的研究较多，对某一地区多个极端事件综合特征的研究较少。在分析1961 - 2020年中国极端高温、极端低温、极端干旱、极端降水和极端台风事件发生频次的基础上，构建了多极端事件综合风险等级指数(MXCI)，并将其应用于中国多极端事件的综合特征分析。结果表明，MXCI的高值区主要分布在中国东南部和西南部。近60年来，中国西部和东南部大部分地区的MXCI呈下降趋势，西南至东北中部呈上升趋势。通过对比分析，MXCI能够客观反映一个区域内多个极端气候事件的综合特征，有助于了解区域极端气候特征，有效应对极端气候风险。

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来源期刊

Climate Earth and Planetary Sciences-Atmospheric Science

CiteScore

5.50

自引率

5.40%

发文量

172

审稿时长

11 weeks

期刊介绍： Climate is an independent, international and multi-disciplinary open access journal focusing on climate processes of the earth, covering all scales and involving modelling and observation methods. The scope of Climate includes: Global climate Regional climate Urban climate Multiscale climate Polar climate Tropical climate Climate downscaling Climate process and sensitivity studies Climate dynamics Climate variability (Interseasonal, interannual to decadal) Feedbacks between local, regional, and global climate change Anthropogenic climate change Climate and monsoon Cloud and precipitation predictions Past, present, and projected climate change Hydroclimate.