2007号台风“海高斯”快速加强的成因分析

利用欧洲中期天气预报中心(European Center for Medium-Range Weather Forecasts,ECMWF)ERA-Interim逐6h再分析数据(水平分辨率0.25°×0.25°)和国家气象中心提供的逐小时台风业务数据,分析了2020年第7号台风“海高斯”的路径和强度特征,并在此基础上...

Analysis on causes of rapid offshore strengthening of Typhoon HIGOS (2020)

Using the 6-h reanalysis data of ECMWF(European Center for Medium-Range Weather Forecasts)ERA-Interim with horizontal resolution of 0.25°×0.25°and hourly typhoon operational data provided by National Meteorological Center,the track and intensity characteristics of typhoon HIGOS(2020)and the reasons for its rapid offshore strengthening are analyzed.The results are listed as follows.1)The small size of Typhoon HIGOS,abnormally high sea surface temperature,and small vertical wind shear are favorable factors for the rapid strengthening of Typhoon HIGOS.2)The high-altitude cold vortex is the favorable condition for the opening of northward upper air outflow in the latter period of Typhoon HIGOS.3)The transport of water vapor and vorticity by the easterly flow from the south of the subtropical high to Typhoon HIGOS is also the favorable condition for the rapid offshore strengthening.