Environmental Influences on Tropical Cyclones

虽然热带气旋的加强是由风暴当地的能源推动的，但越来越多的证据表明，外部强迫，特别是在对流层上层的外部强迫，可以触发内部强化过程。在之前的工作中，主要研究人员提出了假设，即对流层高层外径强迫如何垂直耦合，以产生飓风的低对流层核心强化。这位首席研究员计划用观测数据的诊断计算和数值模拟研究来验证他的假设。然后，他将把风暴形成和加强的概念应用于其他大气扰动，即中纬度爆炸性增长的海洋气旋和陆地上持续时间较长的中尺度涡旋。

Although tropical cyclone intensification is driven by energy sources local to the storm, evidence is growing that external forcing, particularly at upper tropospheric levels, can trigger the internal intensification process. In previous work, the principal investigator developed hypotheses for how upper tropospheric forcing at outer radii vertically couples to produce lower tropospheric inner core intensification of hurricanes. The principal investigator plans to test his hypotheses with both diagnostic calculations with observational data and numerical modeling studies. He will then apply his concepts of storm formation and intensification to other atmospheric disturbances, namely, explosively growing oceanic cyclones in the middle latitudes and a long-lasting mesoscale vortex over land.