文章摘要
赵海军1,李柏2,潘玲3,吴志彦4,王庆华1.暴雨过程中逆风区特征及应用判据研究[J].海洋气象学报,2019,39(2):126-133
暴雨过程中逆风区特征及应用判据研究
Characteristics and application criteria of adverse wind area during torrential rain
投稿时间:2018-11-29  修订日期:2019-01-14
DOI:10.19513/j.cnki.issn2096-3599.2019.02.013
中文关键词: 暴雨  中尺度  逆风区  切变  垂直伸展
英文关键词: torrential rain  mesoscale  adverse wind area  shear  vertical stretch
基金项目:山东省气象局重点科研项目(2017sdqxz09);山东省气象局预报员专项(SDYBY2018-13)
作者单位
赵海军1,李柏2,潘玲3,吴志彦4,王庆华1 1. 临沂市气象局山东 临沂 2760042. 中国气象局气象探测中心北京 1000813. 日照市气象局山东 日照 2768004. 海南省气象台海南 海口 570203 
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中文摘要:
      为研究暴雨过程中逆风区特征及应用判据,统计分析2010—2017年山东临沂地区暴雨过程中的多普勒雷达观测资料,结果表明:暴雨过程中,风暴内的垂直环流是造成逆风区发生发展的直接原因;逆风区表现为β中尺度和γ中尺度,其形态在不同天气类型下有明显差异;逆风区持续阶段降水强度增大,持续时间与过程累积雨量呈正相关;当雷达最低仰角识别到逆风区,其厚度≥4.0 km、强度≥15 m·s-1、径向速度绝对值最大值≥5 m·s-1且持续30 min以上时,风暴常明显发展,相关特征可用于预报风暴和暴雨的发展。
英文摘要:
      The Doppler radar data of torrential rainfall processes in Linyi, Shandong from 2010 to 2017 are statistically analyzed to study the characteristics and its application criteria of adverse wind areas during these processes. Results reveal that: 1) the occurrence and development of adverse wind areas are direct results of the vertical circulations inside the storms during the torrential rainfall processes; 2) the adverse wind areas present meso-γ and meso-β scales with different shapes in different weather types; 3) the precipitation intensity tends to increase while the adverse wind areas persistently exist, and the duration of the adverse wind is positively correlated to the accumulated precipitation; 4) when the radar identifies the adverse wind area at the lowest elevation angle with the thickness equal to or greater than 4.0 km, the intensity equal to or greater than 15 m·s-1, the absolute value of the maximum radial velocity equal to or greater than 5 m·s-1, and the duration above 30 minutes, the storm generally significantly develops. Relevant characteristics can be reference in forecasting storms and torrential rainfall processes.
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