台风云娜 (2004) 的敏感性数值试验及其对涡旋罗斯贝波的影响 明 　杰 , 舒守娟

南京大学学报(自然科学版) ›› 2010, Vol. 46 ›› Issue (3): 296–304.

台风云娜 (2004) 的敏感性数值试验及其对涡旋罗斯贝波的影响

明　杰 , 舒守娟

( 南京大学大气科学学院中尺度灾害性天气教育部重点实验室 , 南京 ,210093)

出版日期:2015-03-30 发布日期:2015-03-30
作者简介:
基金资助:

The sensitivity numerical test of typhoon Rananim(2004) andits impact on the vortex rossby waves

Ming J ie , S hu S hou 2 J uan

Online:2015-03-30 Published:2015-03-30
About author: ( Key Laboratory of Mesoscale Severe Weather of Ministry of Education , School of Atmospheric Sciences ,
Nanjing University , Nanjing , 210093 , China)

摘要/Abstract

摘要： 台风 “云娜” (Rananim) 是 1996 年之后近 8 年中登陆我国大陆最强的台风 , 并且带来很严重的灾害 , 造成了很大的经济损失 . 利用新一代的中尺度模式 (WRF) , 最低的水平分辨率达到 1 1 667 km , 对
“云娜” 进行了地形敏感性数值模拟试验 . 根据数值模拟结果 , 分析了地形对台风路径、强度和降水分布的影响 , 结果表明地形对改变台风登陆后的移动速度及降水分布不均匀都起了很重要的作用 . 并且进一
步分析了地形对于台风环流内涡旋罗斯贝波的传播的影响 .

Abstract: Typhoon Rananim (2004) was one of the severest typhoons landfalling the mainland of China from 1996 to 2004. It brought serious damage and induced prodigious economical loss. Using the new generation mesoscale
model , named the Weather Research and Forecasting (WRF) modeling system with 1 1 667 km grid horizontal spacing on the finest nested mesh. Rananim was successfully sumulated in terms of track , intensity and structures.
The simulated results are compared against to the observations to assess the validity of simulation. The numerical sensitivity tests of terrain effect on Rananim (2004) were also implemented. Based on the numerical simulations , the
effect of terrain on typhoon track , intensity and rainfall were analysed. It was found that the terrain played an important role in changing moving speed of typhoon after landfall and the asymmetry of rainfall. The focus is on the
investgation of the characteristics of the vortex ross waves in sersitivity experiments. The terrain effect on the propagation of vortex rossby waves in the circulation of Rananim (2004) is studied. We found that the vortex rossby
waves propagate azimuthally upussd agavnst the azimathal mean targential flow around the eyewall , and their pervod was longer than that of an air parcel moving within the azimathal mean tangehtial flow. The terriain can change the
propagation of vortex Rossby wave and the diseribation of heavy rainfall.

( 南京大学大气科学学院中尺度灾害性天气教育部重点实验室 , 南京 ,210093). 台风云娜 (2004) 的敏感性数值试验及其对涡旋罗斯贝波的影响

明　杰 , 舒守娟
[J]. 南京大学学报(自然科学版), 2010, 46(3): 296–304.

Ming J ie , S hu S hou 2 J uan
. The sensitivity numerical test of typhoon Rananim(2004) andits impact on the vortex rossby waves
[J]. Journal of Nanjing University(Natural Sciences), 2010, 46(3): 296–304.

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