气象与环境学报2024，Vol.40Issue(4)：72-79,8.DOI:10.3969/j.issn.1673-503X.2024.04.009
基于ETCCDI指数的1991-2021年辽宁省极端降水和气温特征分析
Analysis of extreme precipitation and temperature characteristics in Liaoning province from 1991 to 2021 based on ETCCDI indices
摘要
Abstract
Daily temperature and precipitation data from 60 stations in Liaoning province from 1991 to 2021 were used to calculate 26 extreme climate indices defined by the Expert Team on Climate Change Detection and Indices(ETCCDI).The changes in extreme climate events over the past 30 years and the characteristics of extreme pre-cipitation and temperature in 2021 in Liaoning province were analyzed.The results showed that the average intensi-ty of single extreme cold(warm)events in Liaoning province has increased,but their frequency has decreased,and the frequency of persistent extreme events has also decreased.The number of low-temperature days has de-creased.The length of the growing season has increased,and the indices of warm nights and summer days have in-creased.Extreme precipitation amounts showed significant decadal variations from decrease to increase.In 2021,both extreme cold and warm events in Liaoning province were colder than normal,with extreme cold events being consistently colder across the province,while warm events were colder in western Liaoning province and warmer in the east.The growing season in 2021 was longer than in previous years.Total precipitation and extreme precipitati-on events were both above average,with prolonged wet periods and shortened dry spells.关键词
气候变化/冷事件/暖事件Key words
Climate change/Cold events/Warm events分类
天文与地球科学引用本文复制引用
张婉莹,孙秀博,林毅,宋健,李冰,张萌萌,李嘉宁,吕家欣..基于ETCCDI指数的1991-2021年辽宁省极端降水和气温特征分析[J].气象与环境学报,2024,40(4):72-79,8.基金项目
辽宁省气象局开放基金项目"精细化表征夏季电力负荷的气象数据产品研发(202304)"、辽宁省气象局科研项目"基于ETCCDI指数的辽宁地区极端高温事件与东北亚环流关系研究"(202205)、辽宁省气象服务中心能源气象与安全生产保障研究团队项目和辽宁省气象局金融保险气象灾害风险减量关键技术青年创新团队项目共同资助. （202304）
