报告题目：From Nanoscience Research to the Discoveries of a New Theory of Global Ozone Depletion of and of the Ozone Hole over the Tropics

报告摘要：

The depletion in the ozone layer and global warming are currently two major scientific problems of global and societal importance. I started my research career in the field of (sub)nanometer-scale surface physics and chemistry of metals and semiconductors, from my BSc thesis to my 1st postdoctoral work. Then I stumbled into the field of the science underlying atmospheric ozone depletion. We proposed the cosmic-ray (CR)-driven electron-induced-reaction (CRE) mechanism of chlorofluorocarbons (CFCs) for atmospheric ozone depletion, about two decades ago. My subsequent prediction of the existence of 11-year cyclic variations in both O₃ loss and associated stratospheric cooling in the Antarctic O₃ hole in my 2008-2010 papers has now been well confirmed by observed data. Particularly I showed the observed vertical profiles of Antarctic O₃ trends, providing the fingerprints of the CRE mechanism, in 2021. Furthermore, using observed data from the three major world data sources (WOUDC, NASA and NOAA), I published the first discovery of the all-season and largest ozone hole over the tropics existing since the 1980s, which has a similar depletion depth to the well-known springtime Antarctic ozone hole while its area is seven times larger, in 2022. Moreover, in my 2023 paper published in PNAS, I successfully formulated the CRE theory, providing an unprecedented capability of making parameter-free quantitative calculations of global ozone depletion, which exhibit excellent agreement with observations (“This work is a tour de force”, as commented by the reviewers). My work has challenged the photochemical models recognized by the 1995 Nobel Prize in Chemistry. In this talk, I will discuss some of these observational and theoretical advances.

个人简介：

Qing-Bin Lu ，加拿大滑铁卢大学物理学及天文学系教授、并兼任滑铁卢大学化学及生物学系教授。1997年在澳大利亚 Newcastle大学获物理学博士学位，研究金属和半导体材料的（亚）纳米级表面反应。2013年至今在滑铁卢大学任正教授。

2001-2005年 获加拿大卫生研究所高级研究员奖学金

2007-2012年获安大略省早期研究员奖

2018-2013年 获CIHR 新研究员奖

2014-2021年 获大学研究主席奖

对物理学科的主要贡献包括发现和发展新的臭氧空洞理论和全球变暖理论；对生物医学学科的主要贡献包括发现一种还原性 DNA 损伤的新的分子机制，提出了在免疫防御中合理的扩增机制以及发现了新型的癌症治疗方法。

 

报告时间：2023年11月9日（周四） 下午16:30

报告地点：SY308