低空切变线与低空急流共同影响下浙江梅汛期暴雨落区分型  

The Differentiation Pattern of Heavy Rainfall in the Meiyu Period in Zhejiang Province Influenced by Low Level Shear Line and Low Level Jet

作　　者：李悦 丁霖 徐亚钦 Li Yue(Wucheng District Meteorological Bureau of Jinhua City,Jinhua,Zhejiang 321000)

机构地区：[1]金华市婺城区气象局,浙江金华321000 [2]金华市气象局,浙江金华321000

出　　处：《农业灾害研究》2023年第2期114-117,共4页Journal of Agricultural Catastrophology

基　　金：浙江省气象科技计划青年项目“低空切变线与低空急流共同影响下梅汛期暴雨落区研究”(2021QN39)。

摘　　要：基于国家和区域自动气象站实况雨量资料、ERA5再分析资料、MICAPS常规观测资料,筛选出2015—2021年浙江地区12次梅汛期暴雨天气过程,对其暴雨落区进行分型,并对每一型暴雨影响系统的配置与变动情况进行分析总结。结果表明:浙江梅汛期暴雨落区与西太平洋副热带高压的变动、低空切变线的类型与强度、低空急流的强度和变动、高低空系统之间的相互配置密切相关,可以分为3类,即低空急流附近型、低空切变线附近型、低空急流与低空切变线之间型。Based on the actual rainfall data of national and regional automatic weather stations,ERA5 reanalysis data,and MICAPS conventional observation data,12 rainstorm weather processes in Zhejiang during the Meiyu flood season from 2015 to 2021 were selected,and the rainstorm areas were classified,and the configuration and changes of the impact system of each type of rainstorm were analyzed and summarized.The results showed that the rainstorm area during the plum flood season in Zhejiang Province was closely related to the variation of the subtropical high over the western Pacific,the type and intensity of the low-level shear line,the intensity and variation of the low-level jet,and the mutual configuration between the high-low level systems.It can be roughly divided into three types,namely,the low level jet stream proximity type,the low level shear line near type,and the low level jet stream and the low level tangent line type.

关 键 词：暴雨落区 低空急流 低空切变线 副热带高压 

分 类 号：P458.121.1[天文地球—大气科学及气象学]