Articles | Volume 24, issue 14
https://doi.org/10.5194/acp-24-8225-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-8225-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Jul 2024
Research article |
| 22 Jul 2024
| 22 Jul 2024
Changes in South American surface ozone trends: exploring the influences of precursors and extreme events
Rodrigo J. Seguel
CORRESPONDING AUTHOR
Center for Climate and Resilience Research (CR)², Santiago, Chile
Department of Geophysics, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
Lucas Castillo
Center for Climate and Resilience Research (CR)², Santiago, Chile
Department of Geophysics, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
Charlie Opazo
Center for Climate and Resilience Research (CR)², Santiago, Chile
Department of Geophysics, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
Néstor Y. Rojas
Department of Chemical and Environmental Engineering, Universidad Nacional de Colombia, Bogotá, Colombia
Thiago Nogueira
Departamento de Saúde Ambiental, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, Brazil
María Cazorla
Instituto de Investigaciones Atmosféricas, Universidad San Francisco de Quito USFQ, Quito, Ecuador
Mario Gavidia-Calderón
Departamento de Ciências Atmosféricas, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, Brazil
Laura Gallardo
Center for Climate and Resilience Research (CR)², Santiago, Chile
Department of Geophysics, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
René Garreaud
Center for Climate and Resilience Research (CR)², Santiago, Chile
Department of Geophysics, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
Tomás Carrasco-Escaff
Center for Climate and Resilience Research (CR)², Santiago, Chile
Yasin Elshorbany
School of Geosciences, College of Arts and Sciences, University of South Florida, St. Petersburg, Florida, USA
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Manuscript not accepted for further review
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Oscar M. Baez-Villanueva, Mauricio Zambrano-Bigiarini, Diego G. Miralles, Hylke E. Beck, Jonatan F. Siegmund, Camila Alvarez-Garreton, Koen Verbist, René Garreaud, Juan Pablo Boisier, and Mauricio Galleguillos
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Lady Mateus-Fontecha, Angela Vargas-Burbano, Rodrigo Jimenez, Nestor Y. Rojas, German Rueda-Saa, Dominik van Pinxteren, Manuela van Pinxteren, Khanneh Wadinga Fomba, and Hartmut Herrmann
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This study reports the chemical composition of regionally representative PM2.5 in an area densely populated and substantially industrialized, located in the inter-Andean valley, with the highest sugarcane yield in the world and where sugarcane is burned and harvested year round. We found that sugarcane burning is not portrayed as a distinguishable sample composition component. Instead, the composition analysis revealed multiple associations among sugarcane burning components and other sources.
Nikos Daskalakis, Laura Gallardo, Maria Kanakidou, Johann Rasmus Nüß, Camilo Menares, Roberto Rondanelli, Anne M. Thompson, and Mihalis Vrekoussis
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Mauricio Osses, Néstor Rojas, Cecilia Ibarra, Víctor Valdebenito, Ignacio Laengle, Nicolás Pantoja, Darío Osses, Kevin Basoa, Sebastián Tolvett, Nicolás Huneeus, Laura Gallardo, and Benjamín Gómez
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This work presents the results of the first joint effort of South American and European researchers to generate regional maps of emissions. The PAPILA dataset is a collection of annual emission inventories of reactive gases (CO, NOx, NMVOCs, NH3, and SO2) from anthropogenic sources in the region for the period 2014–2016. This was developed on the basis of the CAMS-GLOB-ANT v4.1 dataset, enriching it with derived data from locally available emission inventories for Argentina, Chile, and Colombia.
Mario Eduardo Gavidia-Calderón, Sergio Ibarra-Espinosa, Youngseob Kim, Yang Zhang, and Maria de Fatima Andrade
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The MUNICH model was used to calculate pollutant concentrations inside the streets of São Paulo. The VEIN emission model provided the vehicular emissions and the coordinates of the streets. We used information from an air quality station to account for pollutant concentrations over the street rooftops. Results showed that when emissions are calibrated, MUNICH satisfied the performance criteria. MUNICH can be used to evaluate the impact of traffic-related air pollution on public health.
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Short summary
Trends of surface ozone were examined across South America. Our findings indicate that ozone trends in major South American cities either increase or remain steady, with no signs of decline. The upward trends can be attributed to chemical regimes that efficiently convert nitric oxide into nitrogen dioxide. Additionally, our results suggest a climate penalty for ozone driven by meteorological conditions that favor wildfire propagation in Chile and extensive heat waves in southern Brazil.
Trends of surface ozone were examined across South America. Our findings indicate that ozone...
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