气象与环境学报2025，Vol.41Issue(2)：64-73,10.DOI:10.3969/j.issn.1673-503X.2025.02.008
2022年湖北省梅雨期和盛夏期气候异常特征及成因分析
Analysis of climatic anomalies and their causes during the Meiyu season and midsummer in Hubei province in 2022
摘要
Abstract
Using daily meteorological station data from Hubei province,NCEP reanalysis data,and climate indices,this study analyzes the anomalous climate characteristics and their causes during the Meiyu season(May 31-July 8)and midsummer(July 9-August 31)in Hubei province in 2022.The results show that the onset of the Meiyu season was abnormally early with an extended duration in Hubei province in 2022.However,precipitation was une-venly distributed with unstable intensity and overall deficit in rainfall.After the Meiyu season,temperature was ab-normally high,with heatwaves that were exceptionally persistent and intense,breaking historical records in the province's meteorological observation history.The early northward shift of the East Asian subtropical westerly jet and the Western Pacific subtropical high(WPSH),combined with adjustments in mid-latitude and high-latitude circulation systems,were the primary reasons for the significantly early onset of the Meiyu season despite poor moisture conditions in Hubei province.Under the combined influence of multiple external forcing signals,including the continuing development of a double-peak La Niña event and warm sea surface temperature anomalies in the In-dian Ocean and equatorial Atlantic,jointly contributed to enhanced subsidence in the East Asian subtropical region via the Hadley circulation,resulting in significantly stronger high pressure in this area.During midsummer,the westward extension and intensification of the WPSH along with the abnormal eastward expansion of the South Asi-an high,caused Hubei province to remain under the prolonged influence of deep warm high-pressure system,lead-ing to persistent,extreme,hot,and high-temperature weather.关键词
东亚副热带西风急流/西太平洋副热带高压/拉尼娜事件/极端高温Key words
East Asian subtropical westerly jet/Western Pacific subtropical high/La Niña event/Extreme high temperature分类
大气科学引用本文复制引用
孙晨,徐卫立,杜良敏,李波,肖莺..2022年湖北省梅雨期和盛夏期气候异常特征及成因分析[J].气象与环境学报,2025,41(2):64-73,10.基金项目
国家重点研发计划(2018YFC150800)、湖北省自然科学基金(2023AFD103)、中国长江电力股份有限公司项目(2421020001)和中国气象局复盘总结专项(FPZJ2024-084)共同资助. （2018YFC150800）
