Spatial and Seasonal Variability of Remote and Urban Speciated Fine Particulate Matter in the United States.

ABSTRACT: The spatial and seasonal variability in the composition of major PM_2.5 (particles with aerodynamic diameters less than 2.5 μm) aerosol species in the United States were characterized using data from ground-based aerosol monitoring networks. The IMPROVE (Interagency Monitoring of Protected Visual Environments) network and the Chemical Speciation Network (CSN) operate in mostly rural/remote or urban/suburban sites, respectively. The networks have similar sampling schedules and analysis methods. Regional, monthly, and annual mean concentrations from 2019 to 2022 were calculated for ammonium sulfate (AS), ammonium nitrate (AN), particulate organic matter (POM), elemental carbon (EC), fine dust (FD), and sea salt (SS), as well as their relative contributions to reconstructed PM₂

SUBMITTER: Hand JL 

PROVIDER: S-EPMC11608814 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature