Characterization of aerosol particles during a high pollution episode over Mexico City.

ABSTRACT: More than 7 thousand wildfires were recorded over Mexico in 2019, affecting almost 640 thousand hectares. Most of these fires occurred during the spring season generating dense smoke plumes, impacting urban areas in the central part of the Mexican plateau. From May 10 to 17, 2019, biomass burning (BB) plumes affected Mexico City (MC) and diffused across the basin, producing PM_2.5 levels ~ 2 times higher than the nation's air quality standards. Average PM_2.5 concentrations increased sharply from 29.4 ± 7.2 µg m^-3 to 65.1 ± 13.6 µg m^-3 when the dense smoke plumes were detected. The higher particle concentration impacted the aerosol optical depth (AOD) as values ~ 3 times greater than the annual mean (0.32 ± 0.12) were measured, which resulted in a

SUBMITTER: Carabali G 

PROVIDER: S-EPMC8602652 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature