气象与环境学报2026，Vol.42Issue(3)：54-62,9.DOI:10.3969/j.issn.1673-503X.2026.03.006
京津冀极端高温天气等级评估及其环流特征
Evaluation and circulation diagnosis of extreme heat events in the Beijing-Tianjin-Hebei region
摘要
Abstract
Fine classification of Climate standard period,for 1961-1990,1971-2000,1981-2010,and 1991-2020,is adopted to calculate the extreme heat threshold at each station over the Beijing-Tianjin-Hebei region during 1961-2023.For each decade,the corresponding Climate standard period is adopted,and the time series and spatial distri-bution of extreme heat events are obtained.Results show that:The southern part of the Beijing-Tianjin-Hebei re-gion has the highest extreme heat threshold,followed by the central part,with the northern part being the lowest.Thresholds in all three parts exhibit an upward trend with the evolution of Climate standard period.The total sta-tion-days during 1961-2023 over the Beijing-Tianjin-Hebei region show an upward trend with the speed of 0.24 d·(10 a)-1.Extreme heat events occured mostly in June during 1960s and 1970s,while they occured mostly in June and July in 1990s and backwards.Atmospheric circulation diagnosis of 17 extreme heat events in 1972,2002 and 2023,The result shows that the warm high at 500 hPa over North China,along with the westward exten-sion of the West Pacific Subtropical High,constitutes the typical circulation pattern for extreme heat events in the Beijing-Tianjin-Hebei region.关键词
气候标准期演变/高温阈值/环流分析Key words
Climate standard period evolution/Extreme heat threshold/Circulation diagnosis分类
天文与地球科学引用本文复制引用
闫语真,于长文,高旭旭,许启慧,邵丽芳,李晓帆,许康..京津冀极端高温天气等级评估及其环流特征[J].气象与环境学报,2026,42(3):54-62,9.基金项目
河北省气象局青年基金项目(23ky03)资助. （23ky03）
