| 可降水量同化对初始湿度场调整的应用研究 |
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| 引用本文： | 何芬,赖绍钧,池艳珍,温珍治,许金镜.可降水量同化对初始湿度场调整的应用研究[J].气象科技,2008,36(2):164-167. |
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| 作者姓名： | 何芬 赖绍钧 池艳珍 温珍治 许金镜 |
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| 作者单位： | 1. 福建省气候中心,福州,350001
2. 福州市气象台,福州,350014 |
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| 基金项目： | 上海区域气象中心区域能力建设项目 |
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| 摘 要： | 设计了一个三维变分同化方案,利用非静力中尺度模式MM5和由实况观测反演得到的可降水量资料,运用该变分同化方法改善初始湿度场,并对2003年7月9～10日的暴雨过程进行数值模拟对比试验.结果表明,①可降水量资料的变分同化对初始湿度场具有较强的调整能力;②同化可降水量后,可以明显地改善模式初始湿度场,能够有效地提高降水模拟的准确率.
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| 关 键 词： | 可降水量 变分资料同化 暴雨 数值模拟 |
| 收稿时间： | 2007/1/29 0:00:00 |
| 修稿时间： | 2007年1月29日 |
Application of Precititable Water Data Assimilation to Adjustment of Initial Humidity Field |
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| He Fen,Lai Shaojun,Chi Yanzhen,Wen Zhenzhi and Xu Jinjing.Application of Precititable Water Data Assimilation to Adjustment of Initial Humidity Field[J].Meteorological Science and Technology,2008,36(2):164-167. |
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| Authors: | He Fen Lai Shaojun Chi Yanzhen Wen Zhenzhi and Xu Jinjing |
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| Affiliation: | Fujian Climate Center, Fuzhou 350001;Fuzhou Meteorological Bureau, Fuzhou 350014;Fujian Climate Center, Fuzhou 350001;Fujian Climate Center, Fuzhou 350001;Fujian Climate Center, Fuzhou 350001 |
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| Abstract: | Precipitable Water (PW) data obtained from retrieving observed data, is used to improve the initial humidity field with the variational assimilation method. The numerical simulation experiments are carried out with MM5 using different initial fields of a heavy rain event happened on 9 to 10 July 2003. The results indicate that the data assimilation of PW has a strong capability of adjusting the initial humidity field; after PW assimilation,the quality of the initial humidity field can be greatly improved,and the accuracy of precipitation forecast can be effectively enhanced. |
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| Keywords: | precipitable water variational assimilation heavy rain numerical simulation |
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