2023年台风“杜苏芮”残余水汽对吉林省暴雨成因分析  

Analysis of Residual Water Vapor of Typhoon“Dusurai”in 2023 on the Cause of Rainstorm in Jilin Province

作　　者：单岩超 张富龙[2] 李欣 阮文哲 Shan Yan-chao(Fuyu Meteorological Bureau,Fuyu,Jilin 131300)

机构地区：[1]扶余市气象局,吉林扶余131300 [2]松原市气象局,吉林松原138000

出　　处：《农业灾害研究》2023年第12期249-251,共3页Journal of Agricultural Catastrophology

摘　　要：利用NCEP/NCAR再分析资料以及吉林省降水量观测资料,分析了降水期间环流形式,应用HYSPLIT模型研究水汽来源与运动轨迹,得出以下结论:暴雨期间588线位于40°N附近,850 hPa存在明显低空风切变,雨区上空假相当位温随高度先增大后减小,垂直上升运动强烈;水汽主要来源于西太平洋,且水汽高度主要集中在中低层;水汽气团先向西北方向移动,到达山东半岛附近受西风急流影响将水汽输送至雨区;暴雨期间水汽输送较强,雨区水汽含量充沛。Based on the NCEP/NCAR reanalysis data and the precipitation observation data of Jilin Province,the circulation pattern during the precipitation period was analyzed,and the HYSPLIT model was used to study the water vapor source and movement trajectory.The following conclusions were drawn:during the rainstorm,the 588 line was located near 40°N,and there was an obvious low-level wind shear at 850 hPa.The pseudo equivalent potential temperature over the rain area first increases and then decreases with height,and the vertical upward movement was strong.Water vapor mainly comes from the western Pacific,and its height was mainly concentrated in the middle and lower layers.The water vapor mass first moves northwest and reaches the vicinity of the Shandong Peninsula,where it was transported to the rainy area by the influence of the westerly jet.During the rainstorm,the water vapor transmission was strong,and the rain area has abundant water vapor content.

关 键 词：暴雨 吉林省 水汽轨迹 水汽输送 

分 类 号：P458.121.1[天文地球—大气科学及气象学]