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。
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.
出处
《热带气象学报》
CSCD
北大核心
2007年第3期237-245,共9页
Journal of Tropical Meteorology
基金
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
