报告题目：Exploring the Key Features of Tropical Cyclogenesis
报告人：Prof. Zhuo Wang (Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign)
邀请人：谈哲敏 教授
时间：2019年7月8日（周一）上午10:00
地点：大气科学楼D103室
报告摘要：
Cloud patterns in satellite imagery are routinely used to estimate tropical cyclone intensity (i.e., the Dvorak technique). A similar technique, however, is not available for tropical cyclogenesis because of our inadequate understanding of convective evolution during tropical cyclone formation. This hinders the effective use of satellite data in predicting tropical cyclogenesis. Key features of convection leading up to tropical cyclogenesis are investigated through the analysis of infrared (IR) brightness temperature(Tb) data in the framework of the marsupial paradigm. More than 150 named tropical cyclones over the Atlantic are examined, and our analyses suggest that convection intensity or area is not a key feature of convection for tropical cyclogenesis. In particular, a small and weak convective system is not necessarily associated with a weak vortex. Instead, organized convection near the circulation center is a key feature of convection for tropical cyclogenesis, and emphasizing convective intensity or frequency without considering the spatial pattern may be misleading. Using reanalysis data and high-resolution numerical model simulations, I will further discuss the dynamical and thermodynamical conditions that promote convective organization and the contributions of different types of precipitation to tropical cyclogenesis
专家简介：
王卓是伊利诺伊大学香槟分校大气科学系副教授，bwin必赢员工。她自2017担任Journal of the Atmospheric Sciences编辑，并任美国气象学会（AMS）热带气象与热带风暴委员会主席，美国CLIVAR/PPAI科学指导组联合主席，WMO热带气象研究组（WGTMR）联合主席。她和团队主要专注于热带气象和气候动力学方面的研究，包括台风生成和年季变化。
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