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DIAGNOSTIC ANALYSIS OF ASYMMETRIC SPIRAL RAINBANDS AROUND THE LANDING OF TYPHOON HAITANG （2005）

ISSN号：1006-8775
期刊名称：《热带气象学报：英文版》
时间：0
分类：P444[天文地球—大气科学及气象学]
作者机构：[1]School of Atmospheric Science / Jiangsu Key Laboratory of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing 210044 China, [2]Meteorological Observatory of Hainan, Haikou 570203 China, [3]Yancheng Meteorological Observatory, Yancheng 224005 China
相关基金：National Program on Basic Research Project （973 Program）（2009CB421503）; National Natural Science Foundation of China （40775033）; National Natural Science Foundation of China （40975037） The authors would like to express our heart-felt gratitude to Ms Wu Wenjun （School of Language and Culture, NUIST） for her painstaking effort in rending this thesis from Chinese into English. Her excellent skill in Chinese-English translation has guaranteed the linguistic quality of this thesis in its English version. Our thanks also goes to Prof Fan Yong （School of Language and Culture, NUIST） for doing an arduous job in revising and finalizing the English version.

关键词：诊断分析, 不均匀的螺线雨乐队, 垂直砍风, 对流涡度向量, diagnostic analysis, asymmetrical spiral rain bands, vertical shear wind, convective vorticity vector

中文摘要：

由使用 WRF mesoscale 模型，这份报纸在在 7 月 19 日的时期期间登陆台风 Haitang 到 20 附近执行数字模拟和不对称的螺线雨乐队的结构的特征的诊断分析， 2005。结果显示与降水中心联系的二根雨线主要台风中心向东北被定位。南部的雨线的运动和紧张与 850-hPa 相应很好从 0200 ～ 1800 UTC 2005 年 7 月 19 日的积极涡度乐队。在气旋的循环的效果下面，在 850 hPa 的积极涡度乐队与一个南部的雨乐队一起连接了，导致在降水的南部的中心的降雨的增强。向南方的雨线逐渐地移动了向，加强在降水的北中心的降雨然后合并与向北方一个。而且，在重降雨之间的关系和分叉回答垂直砍在高高度的风被分析。最后，关系在低高度在降水的二个中心附近在对流涡度向量和降雨的垂直部件的发展之间被揭示。

英文摘要：

By using WRF mesoscale model, this paper carries out a numerical simulation and diagnostic analysis of the structural characteristics of the asymmetric spiral rain bands around the landing of Typhoon Haitang during the period of July 19 to 20, 2005. The result indicated that the two rainbands associated with the precipitation centre was mainly located northeast of the typhoon centre. The movement and intensity of the southern rainband corresponded well with the 850-hPa positive vorticity band from 0200 to 1800 UTC July 19, 2005. Under the effect of cyclonic circulation, the positive vorticity band at 850 hPa connected with a southern rain band, leading to the intensification of rainfall in the southern centre of the precipitation. The southward rainband gradually moved toward and then merges with the northward one, strengthening the rainfall in the northern centre of the precipitation. Besides, the relationship between the heavy rainfall and the divergence field of vertical shear wind in the high altitude is analyzed. Finally, the relationship is revealed between the development of the vertical component of convective vorticity vector and the rainfall near the two centres of precipitation in the low altitude.

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