沙漠与绿洲气象2025，Vol.19Issue(5)：78-84,7.DOI:10.12057/j.issn.2097-6801.2312.21002
甘肃东南部武都涡暴雨天气及中尺度特征
Rainstorm Events and Mesoscale Characteristics of the Wudu Vortex in Southeastern Gansu
摘要
Abstract
This study investigates the Wudu vortex rainstorms during flood seasons(April-September)from 2009 to 2023 in southeastern Gansu Province,using conventional meteorological observations,NCEP FNL 1°×1° reanalysis data,MICAPS data,and precipitation datasets.The results indicate that:(1)The Wudu vortex was associated with 192 rainstorm days,accounting for 61.7%of total rainstorm occurrences.The vortex originated from four source regions(northwestern,northern,local Wudu,and southwestern)and followed four primary tracks:southeastward,eastward,northeastward,and localized dissipation around Wudu.(2)Annual frequency of Wudu vortex events varied significantly,peaking in 2013/2018 and reaching minimum in 2021.Most events occurred between June-August(maximum in July).The vortex lifespan reached 72 hours(most frequently 12-24 hours),strongly correlated with precipitation coverage and intensity.(3)Synoptic patterns were classified into four types:Mongolian low-vortex,subtropical high,low-trough,and plateau-vortex patterns.The subtropical-high type exhibited the longest lifespan,while Mongolian-low-vortex and low-trough types showed shorter durations.Mesoscale conceptual models and convective parameters were established for different vortex types.关键词
暴雨/武都涡/中尺度/甘肃东南部Key words
rainstorm/Wudu vortex/mesoscale/southeastern Gansu分类
天文与地球科学引用本文复制引用
刘丽,苏军锋,王亦涵..甘肃东南部武都涡暴雨天气及中尺度特征[J].沙漠与绿洲气象,2025,19(5):78-84,7.基金项目
甘肃省气象局气象科研项目(Ms2021-12) （Ms2021-12）
甘肃省陇南市科技局科研项目(2025-CX-10) （2025-CX-10）
