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Title: Impact of biomass burning on a metropolitan area in the Amazon during the 2015 El Niño: The enhancement of carbon monoxide and levoglucosan concentrations
Authors: Ribeiro, Igor Oliveira
Santos, Erickson O. do
Batista, Carla E.
Fernandes, Kátia S.
Ye, Jianhuai
Medeiros, Adan Sady S.
e Oliveira, Rafael L.
Sá, Suzane S. de
Sousa, Thaiane Rodrigues de
Kayano, Mary Toshie
Andreoli, Rita Valéria
Machado, Cristine M.D.
Surratt, Jason D.
Duvoisin Júnior, Sérgio
Martin, Scot T.
Souza, Rodrigo Augusto Ferreira de
Keywords: Air Pollution
Air Quality
Atmospheric Pressure
Carbon Monoxide
Particles (particulate Matter)
Atmospheric Particulate
Biomass Burning Emissions
Concentration Values
Forest Fires
Metropolitan Regions
Particulate Matter
Southern Oscillation
Nickel Compounds
Carbon Monoxide
Air Quality
Atmospheric Pollution
Carbon Monoxide
Concentration (composition)
El Nino-southern Oscillation
Forest Fires
Metropolitan Area
Particulate Matter
Air Quality
Carbon Footprint
Chemical Composition
Climate Change
Concentration (parameter)
El Nino
Environmental Monitoring
Particulate Matter
rainy season
Issue Date: 2020
metadata.dc.publisher.journal: Environmental Pollution
metadata.dc.relation.ispartof: Volume 260
Abstract: Biomass burning emissions in the Amazon caused a substantial degradation in the air quality of the Manaus Metropolitan Region (MMR) during the El Niño event of 2015. © 2020 Elsevier LtdExtreme droughts associated with changes in the climate have occurred every 5 years in the Amazon during the 21st century, with the most severe being in 2015. The increase in biomass burning (BB) events that occurred during the 2015 drought had several negative socioeconomic and environmental impacts, one of which was a decrease in the air quality. This study is an investigation into the air quality in the Manaus Metropolitan Region (MMR) (central Amazon, Brazil) during the dry (September to October) and wet (April to May) seasons of 2015 and 2016. A strong El Niño event began during the wet season of 2015 and ended during the wet season of 2016. Particulate matter samples were collected in the MMR during 2015 and 2016, and analyses of the satellite-estimated total carbon monoxide (CO) column and observed levoglucosan concentrations were carried out. Levoglucosan has been shown to be significantly correlated with regional fires and is a well-established chemical tracer for the atmospheric particulates emitted by BB, and CO can be treated as a gaseous-phase tracer for BB. The number of BB events increased significantly during the El Niño period when compared to the average number during 2003–2016. Consequently, the total CO column and levoglucosan concentration values in the MMR increased by 15% and 500%, respectively, when compared to the normal conditions. These results indicate that during the period that was analyzed, the impacts of BB were exacerbated during the strong El Niño event as compared to the non-El Niño period. In this study, we provided evidence that the air quality in the MMR will degrade in the future if droughts and BB occurrences continue to increase. © 2020 Elsevier Ltd
metadata.dc.identifier.doi: 10.1016/j.envpol.2020.114029
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