Atmospheric Radicals from the Troposphere to the Stratosphere

Zoom link:

https://harvard.zoom.us/j/94329891175?pwd=MyszOE15bVNZRFB4U1NNV0JoUzdxZz09

Abstract

Atmospheric radicals are central in atmospheric oxidation in the entire atmosphere, driving the chemistry in both the troposphere and the stratosphere. In this talk, I will show results from several outdoor and indoor air studies relevant to the troposphere using experimental and theoretical methods. The kinetics of the reaction of CH₃O₂ and HO₂, which are some of the most dominant radicals in the troposphere, will be described as well as results from a modelling study of indoor air using a near-explicit chemical scheme. In a separate study, the atmospheric chemistry of the stratosphere will be explored with a focus on the ozone layer. This work uses a 3D chemical-climate model to investigate the impact on stratospheric ozone from explosive volcanic eruptions in contemporary as well as future scenarios.