| 资料同化对一次华南暴雨影响的数值试验研究 |
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| 引用本文： | 莫毅,潘晓滨,臧增亮,张兵.资料同化对一次华南暴雨影响的数值试验研究[J].湖北气象,2008,27(4). |
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| 作者姓名： | 莫毅 潘晓滨 臧增亮 张兵 |
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| 作者单位： | [1]解放军理工大学气象学院,南京211101 [2]中国气象局武汉暴雨研究所,武汉430074 |
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| 摘 要： | 针对一次华南暴雨过程,采用WRF区域中尺度模式进行了控制试验和同化试验.利用WRF-3DVAR同化系统同化了常规探空和地面观测资料,分析了两种资料对初值场的影响,以及对降水和各物理量预报效果的影响.结果表明:同化能改进初始场,并可改进暴雨落区和强度预报;同化可提高WRF模式对风场、温度场、高度场以及水汽场的预报能力.但有一定的时效性;同时同化探空和地面资料,比仅同化探空资料对大气低层物理量的预报能力要提高较多.
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| 关 键 词： | 资料同化 WRF模式 华南暴雨 初值场 |
Effect of Data Assimilation on a Numerical Simulation of a Heavy Rain in South China |
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| MO Yi,PAN Xiao-bin,ZANG Zeng-liang,ZHANG Bing.Effect of Data Assimilation on a Numerical Simulation of a Heavy Rain in South China[J].Meteorology Journal of Hubei,2008,27(4). |
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| Authors: | MO Yi PAN Xiao-bin ZANG Zeng-liang ZHANG Bing |
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| Institution: | MO Yi1,PAN Xiao-bin1,ZANG Zeng-liang1,ZHANG Bing2(1.Institute of Meteorology in PLA University of Science , Technology,Nanjing 211101,2.Wuhan Institue of Heavy Rain,CMA,Wuhan 430074) |
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| Abstract: | In this paper,the control and assimilation experiments of WRF regional mesoscale model prediction are verified in the South China during a course of heavy rain.Based on the WRF-3DVAR system,the sounding data and surface observations are assimilated into WRF model.The effect of the two kinds data on the initialization and the prediction of rain and physical variables are analyzed.Results show that the assimilation of the either data can well improve the initialization,and has positive impact on prediction of... |
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| Keywords: | WRF-3DVAR WRF Initialization |
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