Comparison of ozone formation attribution techniques in the northeastern United States.

ABSTRACT: The Integrated Source Apportionment Method (ISAM) has been revised in the Community Multiscale Air Quality (CMAQ) model. This work updates ISAM to maximize its flexibility, particularly for ozone (O₃) modeling, by providing multiple attribution options, including products inheriting attribution fully from nitrogen oxide reactants, fully from volatile organic compound (VOC) reactants, equally from all reactants, or dynamically from NO _x or VOC reactants based on the indicator gross production ratio of hydrogen peroxide (H₂O₂) to nitric acid (HNO₃). The updated ISAM has been incorporated into the most recent publicly accessible versions of CMAQ (v5.3.2 and beyond). This study's primary objective is to document these ISAM updates a

SUBMITTER: Shu Q 

PROVIDER: S-EPMC11694848 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature