|
|||||
|
|
| 多普勒雷达径向速度同化在淮河暴雨数值模拟中的应用 | |
| 引用本文： | 赵文斌,齐琳琳,邓文彬.多普勒雷达径向速度同化在淮河暴雨数值模拟中的应用[J].气象与减灾研究,2010,33(1):23-30. |
| 作者姓名： | 赵文斌 齐琳琳 邓文彬 |
| 作者单位： | 1. 总参气象水文空间天气总站,北京,100081 2. 空军装备研究院,航空气象防化研究所,北京,100085 3. 总参气象水文空间天气总站海口站,海南,海口,570100 |
| 摘 要： | 针对2007年7月淮河流域的一次强降雨过程,利用WRF中尺度数值模式及其三维变分同化系统(WRF-3DVAR),开展了多普勒雷达径向速度的三维变分同化对暴雨过程模拟效果的影响研究。结果表明:WRF-3DVAR能够有效地同化多普勒雷达径向速度资料,同化后使得模式初始场出现了一定的调整,包含更详尽的中尺度特征信息,进而显著改善模式对大暴雨过程前12h降水的模拟效果。在高分辨率中尺度数值模式中有效地利用多普勒天气雷达资料,能较好地提高中尺度降雨预报。 |
| 关 键 词： | 暴雨 雷达径向速度 中尺度模式 三维变分同化 |
APPLICATION OF DOPPLER RADAR RADIAL VELOCITY ASSIMILATION TO NUMERICAL SIMULATION OF HEAVY RAINFALL IN THE HUAI RIVER |
|
| Zhao Wenbin,Qi Linlin,Deng Wenbin.APPLICATION OF DOPPLER RADAR RADIAL VELOCITY ASSIMILATION TO NUMERICAL SIMULATION OF HEAVY RAINFALL IN THE HUAI RIVER[J].Meteorology and Disaster Reduction Research,2010,33(1):23-30. | |
| Authors: | Zhao Wenbin Qi Linlin Deng Wenbin |
| Institution: | 1.No.61741 of PLA,Beijing 100081,China 2.Institute of Aviation Weather,Air force Academy of Arming,Beijing 100085,China 3.No.61936 of PLA,Haikou 570100,China |
| Abstract: | In this paper,the WRF and WRF-3DVAR system is employed to study the influence of Doppler radar velocity 3DAR assimilation on the numerical simulation of a heavy rainfall process occurred in in Huai River in July 2007.The results show that radial velocity can be assimilated effectively by WRF-3DVAR.And the mesoscale characteristic of the initial field has been adjusted some.Moreover,for the rainfall simulation,assimilation experiment is better than those of non-assimilation,which is more close to the observed rainfall in the previous 12 h. |
| Keywords: | Heavy rainfall Doppler radar radial velocity Mesoscale model Three-dimensional variational assimilation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |