主讲人:

Dr. Hongwei Sun (孙宏伟)

Postdoc, University of Washington

Incoming assistant professor, University of Hawaii

地点：

讲座简介:

As the most-studied geoengineering method, stratospheric aerosol injection (SAI) aims to inject aerosols (e.g., sulfate aerosols) or their precursors (e.g., SO₂) into the stratosphere to reflect sunlight. In this talk, I will show how I use multiscale modeling methods to study solar geoengineering, including:

(1) We employ a Lagrangian trajectory model to simulate how background circulations influence particle transport in the stratosphere. Interesting results include the zonal asymmetry of particle transport in the stratosphere, QBO’s modulation on stratosphere-troposphere exchange (STE), etc.

(2) We created a new Lagrangian plume model and coupled this plume model into a 3-D chemistry transport model (i.e., GEOS-Chem model) to build a multiscale plume-in-grid model. I will show our plume-in-grid model’s advantages in resolving subgrid aircraft plumes by comparing to the classic GEOS-Chem model.

主讲人简介:

Dr. Hongwei Sun is a postdoc at the University of Washington. Before the postdoc, he got his PhD from Harvard University in 2023. He also holds a master’s degree from Tsinghua University and a bachelor's degree from Sun Yet-Sen University. Dr. Sun will be joining the University of Hawaii at Manoa as a Tenure-Track Assistant Professor in Climate Science starting in August 2025. Dr. Sun is focusing on developing and applying different types of models to study multiscale atmospheric processes and climate science. His main research interests include: 1. Large-scale stratospheric transport, dynamics, and aerosol processes. 2. Small-scale aerosol-cloud interactions in the marine boundary layer. 3. Their (1 and 2) applications in climate intervention (geoengineering).

腾讯会议ID：209-922-896

直播观看链接：https://weibo.com/u/2404245107