Lee Cyclogenesis: Its Role in Tropical Storm Development inthe Eastern Pacific

东太平洋热带气旋的初步位置表明，墨西哥中部山脊下游地区是热带气旋发生的有利地点。初步分析表明，与墨西哥和中美洲山脉的气流相互作用可能是许多初始扰动产生的原因，这些扰动最终导致东太平洋热带气旋的形成。联合首席调查员将利用一系列日益复杂的理论和数值模式，研究背风气旋发生在热带气旋发展中的作用。他们还将试图通过分析该地区气旋事件的数据来证实他们的数值模拟结果。他们希望能够找出有利于背风气旋发生的上游大气流动结构，最终可能导致该地区热带气旋预报的改善。

The initial location of tropical cyclones in the eastern Pacific Ocean indicates that the region just downstream of the mountain ridge in central Mexico is a favored location for tropical cyclogenesis. A preliminary analysis suggests that flow interaction with the mountains of Mexico and Central America may be responsible for the generation of many of the initial disturbances which ultimately lead to the formation of tropical cyclones in the eastern Pacific. The co-principal investigators will study the role of lee cyclogenesis in tropical cyclone development by employing a series of theoretical and numerical models of increasing complexity. They also will attempt to corroborate the results of their numerical simulations by analyzing data for cyclone events in the region. They hope to be able to identify upstream atmospheric flow configurations which are conducive to lee cyclogenesis which ultimately could lead to improved tropical cyclone forecasts in this region.