轴对称模型台风的改进方案及其对0425号台风数值模拟的效果

袁金南; 刘春霞

轴对称模型台风的改进方案及其对0425号台风数值模拟的效果

中国气象局广州热带海洋气象研究所, 广东, 广州, 510080

基金项目: 热带海洋气象科学研究基金项目“南海台风-浪-风暴潮耦合试验及台风灾害预估”资助

计量
- 文章访问数: 832
- HTML全文浏览量: 0
- PDF下载量: 800
- 被引次数: 0
出版历程
- 收稿日期: 2006-02-06
- 修回日期: 2006-05-09

IMPROVED SCHEME OF AXISYMMETRIC TYPHOON BOGUS MODEL AND ITS IMPACT ON NUMERICAL SIMULATION OF NO.0425 TYPHOON

Guangzhou Institute of Tropical and Marine Meteorology, CMA, Guangzhou 510080, China

摘要

摘要: 西北太平洋台风切向风廓线存在明显的差异,目前MM5中尺度数值模式NCAR-AFWA的模型台风(bogus)方案中仅使用了最大风速和最大风速半径两个参数,有时不能准确地描述台风的外围结构。通过引入十级风圈平均半径和七级风圈平均半径对NCAR-AFWA的bogus切向风廓线进行改进,然后对0425号台风"洛坦"的路径和强度进行模拟,结果发现:在台风bogus切向风廓线中同时引入十级风圈平均半径和七级风圈平均半径对台风路径和强度模拟均有改进,同时对台风大风范围的模拟也有改进。
- 切向风廓线的改进 /
- MM5模式 /
- 0425号台风“洛坦” /
- 路径和强度模拟
Abstract: There is distinct difference in the tangential wind profile between different typhoons in the western North Pacific. At present,only two parameters,maximum wind and radius of maximum wind,are used in NCAR-AFWA bogus for MM5 mesoscale numerical model. So sometimes the outer structure of typhoon cannot be described accurately. The tangential wind profile of NCAR-AFWA bogus is improved by introducing radii of 25.7 m/s and 15.4 m/s,and then the track and intensity of No.0425 typhoon(NOCKTEN) are simulated. The results show that the simulations of track and intensity of typhoon both have been improved by introducing the radii at the same time in the tangential wind profile of typhoon bogus. At the same time,there is improvement in the gale wind range of typhoon simulated.
- improvement of tangential wind profile /
- MM5 model /
- NO0425 typhoon NOCKTEN /
- Simulations of track and intensity

HTML全文

参考文献(16)

[1]	袁金南,万齐林.台风"玛姬"(9903)数值模拟试验[J].热带气象学报,2003,19(3):317-322.
[2]	FIORINO M,ELSBERRY R L.Some aspects of vortex structure related to tropical cyclone motion[J].J Atmos Sci,1989,46(7):975-990.
[3]	孟智勇,徐祥德,陈联寿.一种适于较强台风的切向风廓线方案及其对异常台风路径的数值模拟研究[J].大气科学,2001,25(2):193-199.
[4]	CHAN J C-L,WILLIAMS R T.Analytical and numerical studies of the beta-effect in tropical cyclone motion Ⅰ:Zero Mean Flow[J].J Atmos Sci,1987,44(9):1257-1265.
[5]	GAO Shanhong,YANG Bo,WU Zengmao.A tangential wind profile for simulating strong tropical cyclones with MM5[J].J Ocean University of China,2005,4(1):21-28.
[6]	RIEHL H.Some relations between wind and thermal structure of steady state hurricanes[J].J Atmos Sci,1963,20(4):276-287.
[7]	MILLER B I.Characteristics of hurricanes[J].Science,1967,157(3795):1389-1399.
[8]	CHRISTOPHER A D,NAM S L.The NCAR-AFWA tropical cyclone bogussing scheme[R].Colorado:Rep NCAR,Boulder,2001:13.
[9]	ZHAO X P,BRAUN S A.Evaluation of bogus vortex technique with four-dimensional variational data assimilations[J].Mon Wea Rev,2001,129(8):2023-2039.
[10]	RANDHIR S,PAL P K,KISHTAWAL C M,et al.Impact of bogus vortex for track and intensity prediction of tropical cyclone[J].J Earth Syst Sci,114(4):427-436.
[11]	WEATHERFORD C L,GRAY W M.Typhoon structure as revealed by aircraft reconnaissance Ⅰ:Data analysis and climatology[J].Mon WeaRev,1988,116(5):1032-1043.
[12]	WEATHERFORD C L,GRAY W M.Typhoon structure as revealed by aircraft reconnaissance Ⅱ:Structural variability[J].Mon Wea Rev,1988,116(5):1044-1056.
[13]	WANG Y Q.On the bogussing of tropical cyclones in numerical models:The influence of vertical structure[J].Meteor Atmos Phys,1998,65(3-4):153-170.
[14]	侯定臣,庄小兰,黄燕波.9012号台风暴雨过程的位涡分析[J].南京气象学院学报,1997,20(1):64-70.
[15]	吕筱英,孙淑清.气旋爆发性发展过程的动力特征及能量学研究[J].大气科学,1996,20(1):90-100.
[16]	袁双佳,寿绍文.高低空位涡扰动、非绝热加热与气旋的发生发展[J].热带气象学报,2002,18(2):121-130.