This study led by Marjan Savadkoohi examines two locations in the Los Angeles Basin—Central LA (CELA) and Rubidoux (RIVR)—leveraging comprehensive PM2.5 chemical speciation datasets and aerosol absorption coefficients measured by an Aethalometer (AE33). Through multi-time source apportionment (MT-PMF), the research uncovers factor profiles and temporal variations, providing critical insights into source-specific characteristics of fine particulate matter.
By overcoming the limitations of a priori assumptions in Aethalometer optical apportionment, this work advances our understanding of urban air pollution sources and their dynamic behavior.

Check out the full article here: https://doi.org/10.1016/j.scitotenv.2024.178095