首页|期刊导航|大气和海洋科学快报（英文版）|Climatological characteristics of the extratropical transition of tropical cyclones along different tracks in the western North Pacific(1979-2022)
大气和海洋科学快报（英文版）2026，Vol.19Issue(2)：8-13,6.DOI:10.1016/j.aosl.2025.100652
Climatological characteristics of the extratropical transition of tropical cyclones along different tracks in the western North Pacific(1979-2022)
Climatological characteristics of the extratropical transition of tropical cyclones along different tracks in the western North Pacific(1979-2022)
摘要
Abstract
本研究基于国际气候管理最佳路径档案(IBTrACS)和欧洲中期天气预报中心第五代再分析数据集(ERA5),发现1979-2022年间西北太平洋有29％的热带气旋经历了温带变性(ET)过程,且ET事件的发生频率呈缓慢下降趋势.通过k-means聚类方法,将变性的热带气旋(ETCs)按路径特征划分为四类:转向路径ETCs,西移路径ETCs,西北移路径ETCs和异常路径ETCs.转向路径ETCs主要在完成转向后开始变性.西移路径ETCs大多数在登陆后完成变性(63.7％).异常路径ETCs通常在高纬度洋面完成变性.西北移路径ETCs在变性期间所用时间最长,移动速度较慢,因此影响持续时间较长.ET过程均发生在西太平洋副热带高压(WPSH)边缘,WPSH西伸时ET频率较高,东退时频率较低.除西移路径ETCs受地表摩擦主导外,其他类型多在WPSH西北侧的强斜压区完成转变.关键词
温带变性/热带气旋/西北太平洋/变性特征Key words
Extratropical transition/Tropical cyclones/Western North Pacific/Transition characteristics引用本文复制引用
Shanshan Li,Lei Chen,Xihui Gu..Climatological characteristics of the extratropical transition of tropical cyclones along different tracks in the western North Pacific(1979-2022)[J].大气和海洋科学快报（英文版）,2026,19(2):8-13,6.基金项目
This work was supported by the National Key Research and Devel-opment Program of China[grant number 2023YFF0807000]. （）
