摘要
采用水平分辨率0.25°×0.25°的日平均和周平均的卫星微波成像仪(TMI)和卫星微波辐射计(AMSRE)的海温资料(TMI-AMSRE SST)作为下强迫源,利用中尺度数值模式MM5对南海过境台风"杜鹃"进行了模拟。试验结果表明:台风中心附近SST的差异会导致大气风场的差异,从而使模式对SST有比较快速而且明显的响应;不同的SST对台风的强度和路径都有一定的影响,而对台风降水和台风中心附近潜热通量有明显的影响;不同SST对台风的影响主要是通过改变海-气潜热通量来实现的。
Daily and weekly sea surface temperature data （TMI-AMSRE SST） of Tropical Rainfall Measuring Mission （TRMM） Microwave Imager （TMI） and Advanced Microwave Scanning Radiometer-Earth Observing System sensors with 0.25°×0.25° horizontal resolution - are used as forcing sources of the underlying surface, and the mesoscale numerical model MM5 is employed to simulate typhoon Dujuan that moved across the South China Sea. The experimental results show that the different SST near the typhoon center results in the difference in the atmospheric wind field so that model has a fast and obvious response to SST. The different SST influenced the intensity and track of Dujuan to some degree and had significant impacts on its precipitation and latent heat flux near the eye. The influence of different SST on Dujuan was mainly fulfilled by changing the latent heat flux between the sea and the atmosphere.
出处
《热带气象学报》
CSCD
北大核心
2009年第4期401-406,共6页
Journal of Tropical Meteorology
基金
国家自然科学基金项目(40476013)
广东省科技计划项目(2008B030303025)
广东省自然科学基金2008年团队项目“华南沿海登陆台风生态的卫星遥感检测和灾害评估”(8351030101000002)
热带海洋气象科学研究基金项目共同资助
关键词
天气学
台风差异
数值试验
不同遥感海温
南海台风“杜鹃”
synoptic meteorology
difference of typhoons
numerical experiments
different remotely sensed sea surface temperature
typhoon Dujuan over the South China Sea
作者简介
王东晓，中国科学院南海海洋研究所，广州市新港西路164号。E-mail：dxwang@scsio.ac．cn
