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| 4DVAR同化反演多普勒雷达资料在一次强降水中的应用 | |
| 引用本文： | 燕成玉,闵锦忠,裴宇杰,李宗涛,张宝贵.4DVAR同化反演多普勒雷达资料在一次强降水中的应用[J].气象与减灾研究,2012,35(2):31-36. |
| 作者姓名： | 燕成玉 闵锦忠 裴宇杰 李宗涛 张宝贵 |
| 作者单位： | 1. 秦皇岛市气象局,河北秦皇岛,066000 2. 南京信息工程大学大气科学学院,江苏南京,210044 3. 河北省气象局,河北石家庄,050021 |
| 摘 要： | 利用秦皇岛多普勒天气雷达资料,应用干模式的4DVAR系统反演发生在河北省昌黎县的一次强降水过程的二维风场,得到较为真实的中小尺度天气系统状况。强降水发生在"人"字形切变线的暖式切变线的前侧,当暖式切变线附近出现中-γ尺度闭合气旋性环流时,降水进一步增强。由于采用干模式的变分方法,每4 min就可完成一次风场的反演,其业务化前景非常乐观。 |
| 关 键 词： | 4DVAR 反演 雷达资料 低层风场 |
APPLICATION OF DOPPLER RADAR DATA RETRIEVED BY 4DVAR DURING A HEAVY RAINFALL PROCESS |
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| Yan Chengyu , Min Jinzhong , Pei Yujie , Li Zongtao , Zhang Baogui.APPLICATION OF DOPPLER RADAR DATA RETRIEVED BY 4DVAR DURING A HEAVY RAINFALL PROCESS[J].Meteorology and Disaster Reduction Research,2012,35(2):31-36. | |
| Authors: | Yan Chengyu Min Jinzhong Pei Yujie Li Zongtao Zhang Baogui |
| Institution: | 1. Qinhuangdao Meteorological Bureau, Qinhuangdao 066000, China 2. School of Atmospheric Sciences, NUIST, Nanjing 210044, China 3. Hebei Meteorological Bureau, Shijiazhuang 050021, China |
| Abstract: | Based on Qinhuangdao Doppler radar data, this paper retrieves two-dimension wind field of a heavy rainfall process in Changli county of Qinhuangdao by adopting 4DVAR method in dry model, and obtains more realistic situation of meso- and micro-scale weather system. The heavy rainfall occurred in the front side of the warm shear line. It is found that the precipitation became heavier when the cyclonic meso-γ-scale closed circulation appeared near the warm shear line. A retrieval of wind field can be completed per four minutes due to adopting the variational method of the dry model, and its operationlization prospect will be very optimistic. |
| Keywords: | 4DVAR Retrieval Doppler radar data Wind field in low layer |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |