Comparison between Spatially Resolved Airborne Flux Measurements and Emission Inventories of Volatile Organic Compounds in Los Angeles.

ABSTRACT: Los Angeles is a major hotspot for ozone and particulate matter air pollution in the United States. Ozone and PM_2.5 in this region have not improved substantially for the past decade, despite a reduction in vehicular emissions of their precursors, NO_x and volatile organic compounds (VOCs). This reduction in "traditional" sources has made the current emission mixture of air pollutant precursors more uncertain. To map and quantify emissions of a wide range of VOCs in this urban area, we performed airborne eddy covariance measurements with wavelet analysis. VOC fluxes measured include tracers for source categories, such as traffic, vegetation, and volatile chemical products (VCPs). Mass fluxes were dominated by oxygenated VOCs, with ethanol contributing ∼29% of th

SUBMITTER: Pfannerstill EY 

PROVIDER: S-EPMC10586371 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature