Tropical Cyclone Energy Dispersion and Self-Maintaining Mechanisms For Summer Synoptic-Scale Waves In The Northwest Pacific

西北太平洋夏季天气尺度波浪的热带气旋能量分散和自我维持机制

• 批准号: 0119490
• 负责人: Tim Li
• 金额: $ 29.43万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-15 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0119490&HistoricalAwards=false
• 关键词: Tropical; Cyclone; Energy; Dispersion; Self

The principal investigators (PIs) will investigate the mechanisms of tropical cyclone (TC) initiation and their roles in the maintenance of synoptic wavetrains observed in the Northwest Pacific. They hypothesize that the Rossby wave energy dispersion from northwest moving TCs induces equatorward and eastward synoptic wave disturbances. Through convective-circulation feedback, these disturbances have the potential of forming new tropical cyclones and repeating the cycle, thus maintaining the synoptic wavetrains. A three-dimensional, high-resolution tropical cyclone model, developed by one of the PIs, will be used to study this mechanism and related issues. An ocean model will be coupled with the TC model to investigate the effects of ocean feedback. This planned research holds promise for resolving a long-standing problem in tropical dynamics by identifying the processes responsible for the coexistence of tropical cyclones and wave-like disturbances. Resolution of the pertinent issues would expand our knowledge of tropical circulation systems.

主要研究人员将研究热带气旋的形成机制及其在维持西北太平洋天气性气流中的作用。他们假设从西北移动的tc产生的罗斯比波能量弥散引起了赤道和东向的天气波扰动。通过对流环流反馈，这些扰动有可能形成新的热带气旋并重复循环，从而维持天气波束。由其中一个项目开发的三维高分辨率热带气旋模式将用于研究这一机制和相关问题。一个海洋模式将与TC模式相结合，以研究海洋反馈的影响。这项计划中的研究通过确定导致热带气旋和波浪状扰动共存的过程，有望解决热带动力学中一个长期存在的问题。有关问题的解决将扩大我们对热带环流系统的认识。