Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 24, issue 20
Articles | Volume 24, issue 20
https://doi.org/10.5194/acp-24-11497-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-11497-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 24, issue 20
Research article
 | 
16 Oct 2024
Research article |  | 16 Oct 2024

Long-range transport of air pollutants increases the concentration of hazardous components of PM2.5 in northern South America

Maria P. Velásquez-García, K. Santiago Hernández, James A. Vergara-Correa, Richard J. Pope, Miriam Gómez-Marín, and Angela M. Rendón

Supplement

https://doi.org/10.5194/acp-24-11497-2024-supplement

Data sets

CAMS global reanalysis (EAC4) CAMS https://ads.atmosphere.copernicus.eu/datasets/cams-global-reanalysis-eac4

ERA5 hourly data on pressure levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.bd0915c6

GPM IMERG Final Precipitation L3 Half Hourly 0.1 degree x 0.1 degree V07 G. J. Huffman et al. https://doi.org/10.5067/GPM/IMERG/3B-HH/07

Estaciones Calidad del Aire SIATA https://siata.gov.co/descarga_siata/index.php/index2/login/cerrar_sesion

Reanalisys 1 NCEP–NCAR https://downloads.psl.noaa.gov/Datasets/ncep.reanalysis/pressure/

Model code and software

Basic trajectories code in python (v2.0.0) M. P. Velásquez-García, D. A. Hernández and J. S. Pérez-Carrasquilla https://doi.org/10.5281/zenodo.13730208

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Short summary
In the Aburrá Valley, northern South America, local emissions determine air quality conditions. However, we found that external sources, such as regional fires, Saharan dust, and volcanic emissions, increase particulate concentrations and worsen chemical composition by introducing elements like heavy metals. Dry winds and source variability contribute to seasonal influences on these events. This study assesses the air quality risks posed by such events, which can affect broad regions worldwide.
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