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投稿时间：2008-04-22 修订日期：2009-06-01
投稿时间：2008-04-22 修订日期：2009-06-01
中文摘要: 采用高分辨率中尺度数值模式WRF对2007年4月17日华南强飑线过程进行数值模拟，
并利用数值模拟结果对强飑线过程进行诊断分析，探讨其触发和维持机制。结果表明，低层
中尺度辐合线及切变线是本次飑线过程主要的触发系统和重要的维持机制之一，干侵入和对
流性不稳定以及低空辐合高空辐散对飑线的发展和维持有着重要的作用。此外，WRF模
式能成功地模拟出本次飑线过程的β中尺度结构特征，表明该模式对强对流天气系统有一定
的模拟能力。
Abstract:Using the high resolution mesoscale model WRF, a strong squall line process
on April 17, 2007 in South China was simulated.The numerical simulation results
were used to make the diagnostic analysis on the strong squall line process, a
nd to explore its trigger and maintenance mechanism. The results show that low l
evel mesoscale convergence line and shear line are one of the main trigger syste
ms of this squall line process and one of the important maintenance mechanisms.
And also the dry invasion and con
vective instability, and convergence and divergence from bottom to top play an i
mportant role in the development and maintenance of the squall line.In addition,
meso β scale structure characteristics of the strong squall line process are
successfully simulated, indicating that the WRF model has a certain simulation
capability of strong convective weather systems.
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基金项目:广西自然科学基金项目“桂科攻0632006 1D”、“桂科攻0816006
9”和广西气象局气象科学研究项目“桂气科200709”联合资助
引用文本：
陈业国,农孟松,黄海洪,沈桐立,2009.一次华南强飑线过程的数值模拟分析[J].气象,35(9):29-37.
Chen Yeguo,Nong Mengsong,Huang Haihong,Shen Tongli,2009.Numerical Simulation and Analysis on a Strong Squall Line in South China[J].Meteor Mon,35(9):29-37.
陈业国,农孟松,黄海洪,沈桐立,2009.一次华南强飑线过程的数值模拟分析[J].气象,35(9):29-37.
Chen Yeguo,Nong Mengsong,Huang Haihong,Shen Tongli,2009.Numerical Simulation and Analysis on a Strong Squall Line in South China[J].Meteor Mon,35(9):29-37.