必赢nn699net

必赢nn699net学报 ?? 2022, Vol. 40 ?? Issue (2): 6-13.

? 民用航空 ? 上一篇    下一篇

必赢nn699net: 导致航班延误的暴雨研究——以 2018 年 7 月 11 日四川盆地暴雨为例

刘海文  ,侯劭禹 ,毛江南  ,巩远发   

  1. (1. 必赢nn699net空中交通管理学院, 天津 300300; 2. 河北省人工影响天气办公室,石家庄 050021; 3. 成都信息工程大学大气科学学院, 成都 610225)
  • 收稿日期:2021-03-29 修回日期:2021-03-29 接受日期:2020-11-11 出版日期:2022-06-05 发布日期:2022-06-05
  • 作者简介:刘海文(1969—),男,山西晋城人,教授,博士,研究方向为航空气象.
  • 基金资助:
    国家自然科学基金项目(42075008);民航安全能力建设资金项目(20600822)

必赢nn699net: A study on the rainstorm that causes flight delays——An event of rainstorm over Sichuan Basin on July 11, 2018

LIU Haiwen , HOU Shaoyu , MAO Jiangnan , GONG Yuanfa   

  1. (1. College of Air Traffic Management, CAUC, Tianjin 300300, China; 2. Hebei Weather Modification Office, Shijiazhuang 050021, China; 3. School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China)
  • Received:2021-03-29 Revised:2021-03-29 Accepted:2020-11-11 Online:2022-06-05 Published:2022-06-05

摘要: 暴雨是导致航班发生大面积延误的主要恶劣天气之一。 利用中国气象局逐小时降水加密观测资料、美国环 境预报中心(NCEP,National Centers for Environmental Prediction)再分析数据(FNL,final reanalysis data)全 球分析资料以及 FY-2E 卫星红外云图,采用天气分析和中尺度数值模拟等方法对 2018 年 7 月 11 日四川 盆地暴雨(简称 7.11 暴雨)进行研究。 研究结果表明:强降水主要发生在 7 月 11 日 02 时和 7 月 11 日 08 时, 前者属于夜间降水, 后者属于白天降水;500 hPa 高度上贝加尔湖低涡延伸至四川盆地的西风槽、700 hPa 高度上位于四川盆地的西南低涡和切变线、西太平洋副热带高压(简称副高)和台风“玛莉亚”是导致 7.11 暴雨的主要天气系统;WRF(weather research forecast)模式能够较好地模拟 24 h 累积降水的空间分 布,但其对 7.11 暴雨的日变化模拟不佳,且其模拟的西南低涡维持时间比实际情况要短。

关键词: 暴雨, 诊断分析, 数值模拟, 四川盆地, 西南低涡, 航班延误

Abstract: Rainstorm is one of the main bad weathers that cause large-scale flight delays. The rainstorm in Sichuan Basin on July 11, 2018 (7.11 rainstorm hereafter) was analyzed using the national hourly encrypted precipitation data, National Centers for Environmental Prediction (NCEP)-final reanalysis data(FNL) and FY-2E infrared cloud chart, by the methods of weather analysis and medium scale numerical simulation.The results showed that the heavy rainfall on July 11 occurred at 02 ∶ 00 am and 08 ∶ 00 am on the 11th. The former is a night rain, and the latter is a daytime precipitation. At 500 hPa, the Baikal Lake vortex extends to the Westerly trough of Sichuan Basin, at 700 hPa, the Southwest vortex and shear line located in the basin, the West Pacific Subtropical High (WPSH) and typhoon Maria are the main weather patterns that affect the 7.11 rainstorm. The mesoscale numerical model weather research forecast(WRF) can better simulate the spatial distribution of the 24-hour accumulated precipitation, but the simulation result of daytime precipitation is not good. In addition, the duration of the southwest vortex simulated by the model is shorter than that of the actual situation.

Key words: rainstorm, diagnostic analysis, numerical simulation, Sichuan Basin, Southwest vortex, flight delay

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