| 物理初值化与短时强对流降水数值模拟研究 |
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| 引用本文： | 李耀东,余政,暴冬玲,刘健文.物理初值化与短时强对流降水数值模拟研究[J].气象科学,2010,30(4):452-459. |
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| 作者姓名： | 李耀东 余政 暴冬玲 刘健文 |
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| 作者单位： | 1. 北京航空气象研究所,北京,100085
2. 九江市气象台,江西,九江,332000 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | ADAS(ARPS Data Assim ilation System)云综合分析采用的是一种物理初值化技术。本文以ARPS(Advanced Regional Pred iction System)云综合分析为基础,设计了一组非常规资料的应用试验,应用ARPS模式对一次典型的短时强降水个例进行了数值模拟研究。结果表明:(1)在ADAS云分析中引入雷达及卫星资料可对湿度场的水平、垂直结构有一定的调整,改善了与对流降水有重要关系的高湿区的分析;(2)引入雷达和卫星资料的云综合分析,可以明显改善强降水发生时间相对迟缓以及模拟前期降水量偏少和降水覆盖面积偏小的现象,使模拟降水场与实际观测较为接近;(3)物理初值化能有效提取非常规资料中的云微物理信息,提高了模式初值质量,从而明显改善模式对强对流降水系统的短时模拟效果。
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| 关 键 词： | 强对流降水 物理初值化 数值模拟 |
| 收稿时间： | 2009/7/12 0:00:00 |
Studies on simulating short-term severe convective precipitation in north China by using physical initialization method |
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| Li Yaodong,Yu Zheng,Bao Dongling and Liu Jianwen.Studies on simulating short-term severe convective precipitation in north China by using physical initialization method[J].Scientia Meteorologica Sinica,2010,30(4):452-459. |
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| Authors: | Li Yaodong Yu Zheng Bao Dongling and Liu Jianwen |
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| Institution: | Li Yaodong1 Yu Zheng2 Bao Dongling1 Liu Jianwen1(1 Beijing Aviation Meteorological Institute,Beijing 100085,China)(2 Jiujiang Meteorological Obsevatory,Jiangxi Jiujiang 332000,China) |
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| Abstract: | Based on ADAS(ARPS Data Assimilation System),an application test of a set of non-conventional data has been designed and ARPS(Advanced Regional Prediction System) has been used to simulate numerically a typical short-term severe convective precipitation case in north China.The results show:(1) Three-dimentional humidity field is modulated when radar and satellite data are used,and humidity field associated with rainfall is thus improved.(2) Heavy rainfall simulation is obviously improved both in amount and ... |
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| Keywords: | Severe convective precipitation Physical initializaton Numerical simulation |
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