Western North Pacific Tropica Cyclone Characteristics Stratified by Genesis Environment
Western North Pacific Tropica Cyclone Characteristics Stratified by Genesis Environment
复制标题
按成因环境分层的西北太平洋热带气旋特征
DOI：
10.1175/mwr-d-17-0110.1
复制
发表时间：
2018
影响因子：
3.2
通讯作者：
and R. Yoshida
中科院分区：
文献类型：
--
作者：
Fudeyasu H;and R. Yoshida
研究了影响西北太平洋热带气旋生成的不同环境因子对西北太平洋夏季和秋季热带气旋生成的影响。根据里奇和霍兰德的分类，将影响热带气旋的因子分为5类：季风切变线（SL）、季风交汇区（CR）、季风环流（戈伊）、东风波（EW）和来自热带气旋的Rossby波能量色散（PTC）。GY-TC倾向于缓慢发展，CR-TC的快速强化（RI）发生率最高，而GY-TC很少经历RI。GY-TC形成时的平均风暴规模是TC类型中平均值最大的，而EW-和PTC-TC较小，尽管这些差异在成熟时消失。热带气旋下方的海表温度（SST）没有显著差异，但热带气旋的热带气旋热势（TCHP）较高。PTC-TC倾向于发展为强TC，并表现出有利的环境特征，如高TCHP，高对流有效位能，弱垂直切变。在菲律宾登陆的PTC-TC的出现率高于其他TC类型的平均值，而在日本（中国）登陆的EW-TC（PTC-TC）的出现率较低。这些结果为防灾提供了重要信息。
The characteristics of tropical cyclones (TCs) in the summer and autumn seasons over the western North Pacific that are associated with different environmental factors that influence TC genesis (TCG) were studied. The authors objectively categorized factors into the five TCG factors classified by Ritchie and Holland: monsoon shear line (SL), monsoon confluence region (CR), monsoon gyre (GY), easterly wave (EW), and the Rossby wave energy dispersion from a preexisting TC (PTC). The GY-TCs tended to develop slowly, and the highest rates of occurrence of rapid intensification (RI) were found for the CR-TCs, whereas the GY-TCs rarely experienced RI. The average storm size of the GY-TCs at the time of formation was the largest of the averages among the TC types, while the EW- and PTC-TCs were smaller, although these differences disappeared at the mature time. There were no significant differences in the sea surface temperature (SST) beneath the TCs, but the tropical cyclone heat potential (TCHP) of the PTC-TCs was higher. The PTC-TCs tended to develop as intense TCs and exhibited favorable environmental characteristics, such as high TCHP, high convective available potential energy, and weak vertical shear. The occurrence rate of the PTC-TCs that made landfall in the Philippines was higher than the averages of the other TC types, whereas those of the EW-TCs (PTC-TCs) that made landfall in Japan (China) were lower. These results provide important information for use in disaster prevention.