Impacts of updated reaction kinetics on the global GEOS-Chem simulation of atmospheric chemistry.

ABSTRACT: We updated the chemical mechanism of the GEOS-Chem global 3-D model of atmospheric chemistry to include new recommendations from the NASA Jet Propulsion Laboratory (JPL) chemical kinetics Data Evaluation 19-5 and from the International Union of Pure and Applied Chemistry (IUPAC) and to balance carbon and nitrogen. We examined the impact of these updates on the GEOS-Chem version 14.0.1 simulation. Notable changes include 11 updates to reactions of reactive nitrogen species, resulting in a 7% net increase in the stratospheric NO_x (NO + NO₂) burden; an updated CO + OH rate formula leading to a 2.7% reduction in total tropospheric CO; adjustments to the rate coefficient and branching ratios of propane + OH, leading to reduced tropospheric propane (-17%) and increas

SUBMITTER: Bates KH 

PROVIDER: S-EPMC10953788 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature