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| 一次强对流过程的三维数值模拟 | |
| 引用本文： | 于华英,顾松山,刘鹏,陈章法,黄小玉.一次强对流过程的三维数值模拟[J].南京气象学院学报,2006,29(3):305-313. |
| 作者姓名： | 于华英 顾松山 刘鹏 陈章法 黄小玉 |
| 作者单位： | 1. 南京信息工程大学,中美合作遥感中心,江苏,南京,210044 2. 南京信息工程大学,电子工程系,江苏,南京,210044 3. 南京大学,大气科学系,江苏,南京,210093 |
| 摘 要： | 利用中国科学院大气物理研究所建立的完全弹性三维雹云数值模式（IAP-CSM3D），模拟了2004年4月23日横扫湘中湘南大部分地区的飑线强对流过程的流场、雷达回波和含水量等宏、微观物理量的分布及其演变。分析了冰雹形成的微物理过程，结果表明，冰雹粒子主要由冻滴（CNfh）和霰（CNgh）转化形成，其中冻滴的贡献比较大，冰雹主要是通过撞冻过冷水过程（CLch、CLrh）长大。将多普勒雷达实测资料同模拟的气流结构进行比较可见，雷达观测到散度随高度的变化与模式模拟的气流结构一致；模式输出的雷达回波强度及回波顶高与雷达观测事实相近。 |
| 关 键 词： | 对流风暴云 数值模拟 成雹机制 多普勒雷达观测 |
| 文章编号： | 1000-2022（2006）03-0305-09 |
| 收稿时间： | 01 6 2005 12:00AM |
| 修稿时间： | 2005-01-062005-03-20 |
Three-Dimensional Numerical Simulation of a Strong Convective Storm |
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| YU Hua-ying,GU Song-shan,LIU Peng,CHEN Zhang-fa,HUANG Xiao-yu.Three-Dimensional Numerical Simulation of a Strong Convective Storm[J].Journal of Nanjing Institute of Meteorology,2006,29(3):305-313. | |
| Authors: | YU Hua-ying GU Song-shan LIU Peng CHEN Zhang-fa HUANG Xiao-yu |
| Institution: | 1 . China-America Cooperative Remote Sensing Center, NUIST, Nanjing 210044, China; 2. Department of Electronic Engineering, NUIST, Nanjing 210044, China; ; 3. Department of Atmospheric Science, NJU, Nanjing 210093 ,China |
| Abstract: | The fully elastic three-dimensional convective storm model(IAP-CSM3D) developed by the Institute of Atmospheric Physics(IAP),was used to simulate the strong convective storm occurred in Hunan Province on April 23,2004.A squall line swept over the most of Hunan Province,and the torrential rain(three-hour precipitation more than 50 mm) occurred in Shaoyang,Loudi,Changsha and Liuyang from 08:15 to 11:42BST.Meanwhile hailstones attacked Changsha and Zhuzhou from 12:37 to 14:25BST.The distribution and evolution of the macro-physical as well as micro-physical quantities of the strong convection process,such as wind field structure,radar echo,water content,etc.are simulated,and the formation mechanism of hailstones in the storm is analyzed.The simulation results indicate that the auto-conversion of frozen drops and graupels(CNfh,CNgh) are the main sources of the hailstones in the strong convective storm studied,but the contribution of frozen drops(CNfh) is greater than that of graupels(CNgh).The growth of hailstones mainly depends on collecting supercooled water(CLch,CLrh).The Doppler weather radar observations are compared with the simulated airflow structure,and results indicate that the change of divergence with height observed is consistent with the airflow structure simulated,and that the reflectivity and echo top output from the model are close to those observed. |
| Keywords: | strong convective storm numerical simulation formation mechanism of hailstones Doppler weather radar observations |
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