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| 多普勒雷达资料对暴雨定量预报的同化对比试验 | |
| 引用本文： | 潘敖大,王桂臣,张红华,姜有山,朱云凤.多普勒雷达资料对暴雨定量预报的同化对比试验[J].气象科学,2009,29(6):755-760. |
| 作者姓名： | 潘敖大 王桂臣 张红华 姜有山 朱云凤 |
| 作者单位： | 1. 江苏省气象局,南京,210008 2. 连云港市气象局,江苏,连云港,222006 3. 南京市气象局,南京,210008 |
| 基金项目： | 江苏省科学技术厅科技支撑计划-社会发展，教育部高校科技创新工程重大项目培育资金，科技部公益性行业(气象)专项 |
| 摘 要： | 基于NCEP/NCAR再分析资料和连云港雷达探测资料,利用WRF模式及其三维变分同化V2.1系统,对发生在2008年4月19日连云港地区一次区域性暴雨过程进行了三维变分同化数值模拟对比研究.结果表明,同化了雷达资料后,模式预报效果比单独使用NCEP做初始场效果明显改善,暴雨落区和量值更接近实况.同化了雷达资料后,模式预报的垂直运动区、最大上升区、水汽输送通道和高空涡度分布等更接近强降水区,结构也更精细,说明初始场增加雷达资料后,对初始风场的结构、强度和初始云水分布有实质性的改进,从而提高了对暴雨定量预报的效果. |
| 关 键 词： | 暴雨 WRF模式 三维变分同化 多普勒雷达 |
| 收稿时间： | 2008/3/10 0:00:00 |
Comparison experiment of quantitative rainfall prediction for rainstorm with assimilated Doppler radar data |
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| Pan Aod,Wang Guichen,Zhang Honghu,Jiang Youshan and Zhu Yunfeng.Comparison experiment of quantitative rainfall prediction for rainstorm with assimilated Doppler radar data[J].Scientia Meteorologica Sinica,2009,29(6):755-760. | |
| Authors: | Pan Aod Wang Guichen Zhang Honghu Jiang Youshan and Zhu Yunfeng |
| Institution: | Jiangsu Meteorological Bureau,Nanjing 210008, China;Lianyungang Meteorological Bureau, Jiangsu Lianyungang 222006, China;Lianyungang Meteorological Bureau, Jiangsu Lianyungang 222006, China;Nanjing Meteorological Bureau, Nanjing 210008, China;Lianyungang Meteorological Bureau, Jiangsu Lianyungang 222006, China |
| Abstract: | Based on NCEP/NCAR reanalysis data and Doppler radar data of Lianyungang, a local rainstorm process during April 19-20, 2008 over Lianyungang region was compared with Weather Research and Forecasting (WRF) Model and 3DVAR assimilation system of V2.1. The results showed that : the forecast efficiency with Doppler radar data had more significant improvement than that signal NCEP data. Rainstorm falling area and precipitation using WRF model with Doppler radar data were close to real data. The positions of the vertical movement region, the largest ascending region, the vapor transfer channel and the distribution of vorticity in altitude were close to heavy rain region after Doppler radar data was assimilated, the structure of them had also a more precise. So the wind structure with intensity and the cloud with moisture in initial fields had substantive improvement after Doppler radar data added into initial fields. The efficiency of quantitative rainfall prediction was improved. |
| Keywords: | Rainstorm WRF numerical model 3DVAR Doppler radar data |
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