Quantifying international and interstate contributions to primary ambient PM_2.5 and PM₁₀ in a complex metropolitan atmosphere.

ABSTRACT: We quantify the contributions of long-range and regionally transported aerosols to ambient primary PM_2.5 and PM₁₀ in a representative United States industrialized/urban atmosphere via detailed elemental analysis and chemical mass balance (CMB) modeling after identifying their presence using a variety of publicly available satellite data/information, software products, and synoptic-scale aerosol models. A year-long study in Houston, Texas identified North African dust as the principal long-range global source of primary particulate matter (PM). CMB estimated transatlantic dust from the Sahara-Sahel region to be dominant in the summer months contributing an average of 3.5 μg m^-3 to PM_2.5 and 7.9 μg m^-3 to PM₁₀ during May-Augus

SUBMITTER: Das S 

PROVIDER: S-EPMC10022636 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature