The Role of Topography on Tropical Cyclogenesis in the Eastern North Pacific

北太平洋东部，马德雷山脉以西，经历了热带气旋形成的高发生率。 风暴的初始位置和盛行的低空风向表明，地形可能在气旋生成中发挥作用。 观测还表明，成熟热带气旋在墨西哥东海岸登陆时产生的次级环流也可能有助于该地区的气旋生成。 以往的理论研究表明，东风纬向气流与地形的相互作用可能产生东风波，东风波作为触发东太平洋热带气旋形成的初始环流。 主要研究者将进行进一步的研究，主要是建模研究，使用模型的层次结构，以更好地诊断循环系统的演变。 ***

The eastern North Pacific, just west of the Sierra Madre Mountains, experiences a high incidence of tropical cyclone formation. The initial location of the storms and the prevailing low-level wind direction suggest that the terrain may play a role in the cyclogenesis. Observations also suggest that secondary circulations generated as mature tropical cyclones make landfall on the east coast of Mexico may contribute to cyclogenesis in the region as well. Previous theoretical studies indicate that the interaction of easterly zonal flows with the terrain may generate easterly waves which serve as the initial circulations that trigger tropical cyclone formation in the eastern Pacific. The principal investigator will conduct further studies, principally modeling studies, using a hierarchy of models to better diagnose the evolution of the circulation systems. ***