Comparison between ozone column depths and methane lifetimes computed by one- and three-dimensional models at different atmospheric O₂ levels.

ABSTRACT: Recently, Cooke et al. (Cooke et al. 2022 R. Soc. Open Sci. 9, 211165. (doi:10.1098/rsos.211165)) used a three-dimensional coupled chemistry-climate model (WACCM6) to calculate ozone column depths at varied atmospheric O₂ levels. They argued that previous one-dimensional (1-D) photochemical model studies, e.g. Segura et al. (Segura et al. 2003 Astrobiology 3, 689-708. (doi:10.1089/153110703322736024)), may have overestimated the ozone column depth at low pO₂, and hence also overestimated the lifetime of methane. We have compared new simulations from an updated version of the Segura et al. model with those from WACCM6, together with some results from a second three-dimensional model. The discrepancy in ozon

SUBMITTER: Ji A 

PROVIDER: S-EPMC10154922 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature