报告题目：Physics of cloud-ocean decoupling
报 告 人：郑又通 研究员
报告时间：2022年5月5日（周四）晚上 9:00
腾讯会议：251-760-805
主 持 人：陆春松 教授
报告人简介：
Youtong Zheng,an atmospheric scientist at GFDL and AOS program of Princeton University. He studies clouds, a complex system that is adaptive, resilient, self-organized, multi-scale, and filled with emergent properties. He is interested in many aspects of clouds including (1) the vertical air motions that form and maintain the clouds; (2) their underlying surfaces that feed moisture, energy, and mass to them; (3) their interactions with aerosols, the tiny particles suspended in the atmosphere, upon which cloud droplets form; (4) how they respond and feed back to the large-scale meteorology. He uses whatever tools that are appropriate to solve the problem: observations (satellite and experiments), theory (simple ones that capture the coarse-grain behavior), and numerical models (large-eddy model and GCM). Website: https://zhengyoutong.wixsite.com/mysite
报告简介：
Marine low-lying clouds significantly regulate the local and global radiation budgets. How low clouds respond to a warming planet remains the largest source of uncertainty, limiting the accuracy of future climate projections. Under typical conditions, low clouds are sustained by tight coupling with the underlying ocean via turbulent circulations, forming a coupled cloud-surface system. Decoupling, however, often occurs. The cloud-surface decoupling can profoundly change the ability of low clouds to reflect sunlight, thus regulating the Earth’s temperatures. In this talk, I use observations and process-level computer simulations to elucidate the fundamental physics of (1) what drives the cloud-surface decoupling and (2) how decoupling alters the low clouds and climate.In the second part, I will briefly speak about my scientific journey as a NUIST alumnus.
欢迎广大师生踊跃参加！
大气物理学院
2022年5 月3 日
