Urban influence on the concentration and composition of submicron particulate matter in central Amazonia (2018)
- Authors:
- Suzane S. de Sá
- Palm, Brett B
- Campuzano-Jost, Pedro
- Day, Douglas A
- Hu, Weuwei
- Isaacman-VanWertz, Gabriel
- Yee, Lindsay D
- Brito, Joel
- Carbone, Samara
- Ribeiro, Igor O
- Cirino, Glauber G
- Liu, Yingjun
- Thalman, Ryan - Brookhaven National Laboratory (BNL)
- Sedlacek, Arthur - Brookhaven National Laboratory (BNL)
- Funk, Aaron
- Schumacher, Courtney
- Shilling, John E
- Schneider, Johannes - Max-Planck-Institut für Chemie (Max Planck Institute for Chemistry)
- Artaxo Netto, Paulo Eduardo
- Goldstein, Allen H
- Souza, Rodrigo A F
- Wang, Jian - Brookhaven National Laboratory (BNL)
- McKinney, Karena A
- Barbosa, Henrique de Melo Jorge
- Alexander, M Lizabeth
- Jimenez, Jose L
- Martin, Scot T
- USP affiliated authors: NETTO, PAULO EDUARDO ARTAXO - IF ; BARBOSA, HENRIQUE DE MELO JORGE - IF
- Unidade: IF
- DOI: 10.5194/acp-2018-172
- Subjects: FÍSICA ATMOSFÉRICA; AEROSSOL; MUDANÇA CLIMÁTICA
- Agências de fomento:
- Language: Inglês
- Abstract: An understanding of how anthropogenic emissions affect the concentrations and composition of airborne particulate matter (PM) is fundamental to quantifying the influence of human activities on climate and air quality. The central Amazon Basin, especially around the city of Manaus, Brazil, has experienced rapid changes in the past decades due to ongoing urbanization. Herein, changes in the concentration and composition of submicron PM due to pollution downwind of the Manaus metropolitan region are reported as part of the GoAmazon2014/5 experiment. A high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) and a suite of other gas- and particle-phase instruments were deployed at the T3 research site, 70km downwind of Manaus, during the wet season. At this site, organic components represented 79±7% of the non-refractory PM1 mass concentration on average, which was in the same range as several upwind sites. However, the organic PM1 was considerably more oxidized at T3 compared to upwind measurements. Positive-matrix factorization (PMF) was applied to the time series of organic mass spectra collected at the T3 site, yielding three factors representing secondary processes (73±15% of total organic mass concentration) and three factors representing primary anthropogenic emissions (27±15%). Fuzzy c-means clustering (FCM) was applied to the afternoon time series of concentrations of NOy, ozone, total particle number, black carbon, and sulfate. Four clusters were identified and characterized by distinct air mass origins and particle compositions. Two clusters, Bkgd-1 and Bkgd-2, were associated with background conditions. Bkgd-1 appeared to represent near-field atmospheric PM production and oxidation of a day or less. Bkgd-2 appeared to represent material transported and oxidized for two or more days, often with out-of-basin contributions.Two other clusters, Pol-1 and Pol-2, represented the Manaus influence, one apparently associated with the northern region of Manaus and the other with the southern region of the city. A composite of the PMF and FCM analyses provided insights into the anthropogenic effects on PM concentration and composition. The increase in mass concentration of submicron PM ranged from 25% to 200% under polluted compared with background conditions, including contributions from both primary and secondary PM. Furthermore, a comparison of PMF factor loadings for different clusters suggested a shift in the pathways of PM production under polluted conditions. Nitrogen oxides may have played a critical role in these shifts. Increased concentrations of nitrogen oxides can shift pathways of PM production from HO2-dominant to NO-dominant as well as increase the concentrations of oxidants in the atmosphere. Consequently, the oxidation of biogenic and anthropogenic precursor gases as well as the oxidative processing of preexisting atmospheric PM can be accelerated. This combined set of results demonstrates the susceptibility of atmospheric chemistry, air quality, and associated climate forcing to anthropogenic perturbations over tropical forests.
- Imprenta:
- Source:
- Título do periódico: Atmospheric Chemistry and Physics
- ISSN: 1680-7316
- Volume/Número/Paginação/Ano: v. 18, n. 16, p. 12185-12206, 2018
- Este periódico é de assinatura
- Este artigo é de acesso aberto
- URL de acesso aberto
- Cor do Acesso Aberto: green
- Licença: cc-by
-
ABNT
SUZANE S. DE SÁ, et al. Urban influence on the concentration and composition of submicron particulate matter in central Amazonia. Atmospheric Chemistry and Physics, v. 18, n. 16, p. 12185-12206, 2018Tradução . . Disponível em: https://doi.org/10.5194/acp-2018-172. Acesso em: 20 abr. 2024. -
APA
Suzane S. de Sá,, Palm, B. B., Campuzano-Jost, P., Day, D. A., Hu, W., Isaacman-VanWertz, G., et al. (2018). Urban influence on the concentration and composition of submicron particulate matter in central Amazonia. Atmospheric Chemistry and Physics, 18( 16), 12185-12206. doi:10.5194/acp-2018-172 -
NLM
Suzane S. de Sá, Palm BB, Campuzano-Jost P, Day DA, Hu W, Isaacman-VanWertz G, Yee LD, Brito J, Carbone S, Ribeiro IO, Cirino GG, Liu Y, Thalman R, Sedlacek A, Funk A, Schumacher C, Shilling JE, Schneider J, Artaxo Netto PE, Goldstein AH, Souza RAF, Wang J, McKinney KA, Barbosa H de MJ, Alexander ML, Jimenez JL, Martin ST. Urban influence on the concentration and composition of submicron particulate matter in central Amazonia [Internet]. Atmospheric Chemistry and Physics. 2018 ; 18( 16): 12185-12206.[citado 2024 abr. 20 ] Available from: https://doi.org/10.5194/acp-2018-172 -
Vancouver
Suzane S. de Sá, Palm BB, Campuzano-Jost P, Day DA, Hu W, Isaacman-VanWertz G, Yee LD, Brito J, Carbone S, Ribeiro IO, Cirino GG, Liu Y, Thalman R, Sedlacek A, Funk A, Schumacher C, Shilling JE, Schneider J, Artaxo Netto PE, Goldstein AH, Souza RAF, Wang J, McKinney KA, Barbosa H de MJ, Alexander ML, Jimenez JL, Martin ST. Urban influence on the concentration and composition of submicron particulate matter in central Amazonia [Internet]. Atmospheric Chemistry and Physics. 2018 ; 18( 16): 12185-12206.[citado 2024 abr. 20 ] Available from: https://doi.org/10.5194/acp-2018-172 - Aerosols in Amazonia: natural biogenic particles and large scale biomass burning impacts
- CCN activity and organic hygroscopicity of aerosols downwind of an urban region in central Amazonia: seasonal and diel variations and impact of anthropogenic emissions
- Observations of Manaus urban plume evolution and interaction with biogenic emissions in GoAmazon 2014/5
- Atmospheric mercury concentrations observed at ground-based monitoring sites globally distributed in the framework of the GMOS network
- The role of biogenic, biomass burning and urban pollution aerosol particles in controlling key atmospheric processes in Amazonia
- Substantial convection and precipitation enhancements by ultrafine aerosol particles
- Long-term observations of cloud condensation nuclei in the Amazon rain forest – Part 1: Aerosol size distribution, hygroscopicity, and new model parametrizations for CCN prediction
- Simpósio 1: Física aplicada às ciências ambientais
- Amazon boundary layer aerosol concentration sustained by vertical transport during rainfall
- Física aplicada às ciências ambientais
Informações sobre o DOI: 10.5194/acp-2018-172 (Fonte: oaDOI API)
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