Impact of Chemical Composition on Aerosol Scattering: Insights from the Surface Particulate Matter Network and Aerosol Robotic Network.

ABSTRACT: Using the Surface Particulate Matter Network (SPARTAN) and Aerosol Robotic Network (AERONET), we investigated the relationship between aerosol chemical composition and optical properties across 14 global sites. The mass concentrations of ammonium sulfate (AS), ammonium nitrate (AN), fine soil (FS), and black carbon (BC) from SPARTAN were collocated with aerosol optical properties (aerosol optical depth (AOD), fine mode fraction (FMF), and single scattering albedo (SSA)) from AERONET. Significant differences in the optical properties of samples from 2016 to 2023 were identified based on the mass and mass ratios of the chemical components. For the BC-FS relationship in the data set used in this study, increased FS mass lowered FMF and dSSA_BC-FS (SSA₄₄₀-SSA₈₇₀

SUBMITTER: Eom S 

PROVIDER: S-EPMC12461914 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature