2022年夏季中国高温干旱气候特征及成因探讨  

Characteristics and causes of the hot-dry climate anomalies in China during summer of 2022

作　　者：孙博[1,2,3] 王会军 黄艳艳[1,2,3] 尹志聪[1,2,3] 周波涛 段明铿[1] SUN Bo;WANG Huijun;HUANG Yanyan;YIN Zhicong;ZHOU Botao;DUAN Mingkeng(Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disasters,Ministry of Education/Joint International Research Laboratory of Climate and Environment Change,Nanjing University of Information Science and Technology,Nanjing 210044,China;Southern Marine Science and Engineering Guangdong Laboratory,Zhuhai 519080,China;Nansen-Zhu International Research Centre,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China)

机构地区：[1]南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心,江苏南京210044 [2]南方海洋科学与工程广东省实验室(珠海),广东珠海519080 [3]中国科学院大气物理研究所竺可桢-南森国际研究中心,北京100029

出　　处：《大气科学学报》2023年第1期1-8,共8页Transactions of Atmospheric Sciences

基　　金：国家基础科学中心项目(42088101)。

摘　　要：2022年夏季,中国中东部发生了极端高温干旱气候异常,给经济、农业、人民生活造成了严重影响。本文回顾了此次高温干旱气候异常的时空特征,分析了其主要成因。2022年夏季,中国中东部区域平均的极端高温频次、日最高温度平均值、高温日数等指标均达到了1979年以来的最大值,区域平均降水则达到了1979年以来的最低值。此次气候异常主要是由于夏季中国中东部受强大的高压系统控制,与偏强的西太副高、中纬度的西风带扰动以及热带海温的影响有关。此外,本文探讨了全球增暖趋势对极端高温事件增多的影响,以及未来中国地区高温和干旱事件的可能变化。Extreme hot and dry climate anomalies occurred in central-eastern China during the summer of 2022,w hich had a significant impact on the economy,agriculture,and human community.This paper review s the spatiotemporal characteristics and causes of this hot and dry event occurrence.During the summer of 2022,the areal mean extreme high temperature frequency,monthly mean daily maximum temperature,and high temperature days reached their highest values since 1979,w hile the areal mean monthly mean precipitation over central-eastern China reached its low est since 1979.These climate anomalies are caused by the combined effects of several factors,including anomalous strong w estern Pacific subtropical highs,increased disturbances in mid-latitude w esterlies,and tropical sea surface temperature anomalies.In addition,the paper explores the influence of global w arming trend on this extreme event,As w ell as the future changes in extreme heat and drought in China.

关 键 词：高温干旱 极端事件 西太副高 西风带 海温 全球变暖 

分 类 号：P426.616[天文地球—大气科学及气象学]