题目：Understanding the climate effect of atmospheric particles

时间：2025年11月27日     14：30

地点：主楼A432

报告人：Prof. Xuan Wang

Abstract:

Particles in the atmosphere play a crucial yet uncertain role in influencing the Earth's climate, primarily through altering the radiative balance and modulating cloud properties. In this talk, I will first share a decade of our research journey on investigating the climate effect of light-absorbing particles, a potentially significant warming agent. While our early studies suggested that policies targeted at reducing light-absorbing particle emissions, as previously recommended by the IPCC, might have limited efficacy in mitigating global warming; our latest finding unveils the hidden role of dark brown carbon, an underappreciated warming agent from global wildfires. Furthermore, I will also introduce our recent work on anthropogenic coarse particles in China, suggesting them as a missing cooling component in previous climate assessments. 

Brief biography:

Prof. Xuan Wang is an Assistant Professor at City University of Hong Kong. He obtained his Ph.D. from MIT in 2017, after which he served as a postdoctoral fellow at Harvard University before joining CityUHK. His research focuses on the chemical composition of the atmosphere and its environmental impacts. His group develops models and integrates them with observations to study the complex interactions among human activities, natural processes, and the earth’s climate. He has contributed to over fifty publications on leading journals such as One Earth, Nature Geoscience, and ES&T. He is an early career editorial board member of the journal ACS ES&T Air and the mentor for Vision Carbon Limited, a start-up based in Hong Kong.