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

李气旋：其在东太平洋热带风暴发展中的作用

• 批准号: 8912560
• 负责人: Joseph Zehnder
• 金额: $ 18.41万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-10-01 至 1992-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8912560&HistoricalAwards=false
• 关键词: Lee; Cyclogenesis; Its; Role; Tropical

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.

东太平洋热带气旋的初始位置表明，墨西哥中部山脊的下游地区是热带气旋形成的有利位置。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产生许多最初扰动的原因，这些扰动最终导致东太平洋热带气旋的形成。联合主要研究人员将采用一系列日益复杂的理论和数值模式，研究背风气旋形成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。他们希望能够确定有利于背风气旋形成的上游大气流动结构，从而最终改善该地区的热带气旋预报。