Investigating Southeast Asian biomass burning by the WRF-CMAQ two-way coupled model: Emission and direct aerosol radiative effects.

ABSTRACT: Southeast Asia (SEA) is one of the world's major sources of biomass burning (BB). In this study, the recently released Weather Research and Forecasting-Community Multiscale Air Quality (WRF-CMAQ) two-way coupled model was used with the Global Fire Emissions Database Version 4, to investigate the effect of BB emissions on the meteorology and air quality over SEA. The results show that the model performance was improved by considering BB emissions. When BB pollutants reach the free troposphere, they can be transported by westerly and southwesterly winds to downstream regions. The contributions of BB were up to 44.3 and 34.5 ppbv to surface O₃ concentrations and 304.9 and 128.1 μg/m³ to surface PM_2.5 concentrations in March and April, respectively. The BB emis

SUBMITTER: Huang Y 

PROVIDER: S-EPMC11864209 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature