【摘要】 热带气旋登陆时的破坏力和灾害经常非常严重。其强灾害的产生与热带气旋登陆时能量短时内的突然释放及台风中强烈的中尺度扰动特征有很大关系。常规观测站网及常规观测设备,无论时间和空间的分辨能力,都不能很好的反映这种特征,因而给台风灾害的准确预报带来困难。该文采用CLATEX(China Landfall Typhoon Experiment)登陆台风现场科学试验的观测资料,分析2002年强热带风暴"黄蜂"的风场、中尺度扰动场及动量通量特征;研究其登陆期间湍流动量通量变化特征。结果表明,使用首次在登陆台风外场观测试验中的风廓线仪观测资料,能较好的分析强热带风暴"黄蜂"的风场结构。有助于对登陆台风的风场和湍流动量通量时空分布及机理的进一步认识。更多还原

【Abstract】 Disasters and destroys due to a landing tropical cyclone could be very severe, during its landing. Those serious disasters of tropical cyclones are closely related to sudden release of energy and meso-scale disturbances of a landing tropical cyclone in a short time. The space-time distribution characteristics of meso-scale disturbance can not be described perfectly by data from routine meteorological observed network and instruments. So, it is difficult to give an exactly prediction of TC disasters. By using data from CLATEX(China Landfall Typhoon Experiment), the wind fields, meso-scale disturbances and the changes of turbulences fluxes during the time of TC "Vongfong" was landing in 2002 are studied. It is indicated that the study by using the wind profiler data from the first CLATEX.a reasonable wind structure of TC "Vongfong" could be obtained. It will be of great assistance in understanding of wind fields and space-time distributions and change mechanism of turbulence fluxes for a landing TC.更多还原