Modeling of Atmospheric Aerosol Properties in the SAo Paulo Metropolitan Area: Impact of Biomass Burning

Autor(es)

Vara-Vela, Angel ^[1] ; Andrade, Maria de Fatima ^[1] ; Zhang, Yang ^[2] ; Kumar, Prashant ^{[3, 4]} ; Souto-Oliveira, Carlos Eduardo ^[5] ; Landulfo, Eduardo ^[8]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Astron Geophys & Atmospher Sci, Dept Atmospher Sci, Sao Paulo - Brazil

^[2] North Carolina State Univ, Dept Marine Earth & Atmospher Sci, Coll Sci, Raleigh, NC - USA

^[3] Univ Surrey, Fac Engn & Phys Sci, Dept Civil & Environm Engn, Global Ctr Clean Air Res, Guildford, Surrey - England

^[4] Univ Surrey, Fac Engn & Phys Sci, Environm Flow Res Ctr, Guildford, Surrey - England

^[5] Univ Sao Paulo, Inst Geosci, Geocronol Res Ctr, Sao Paulo - Brazil

^[6] Nucl & Energy Res Inst, Ctr Laser & Applicat, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES; v. 123, n. 17, p. 9935-9956, SEP 16 2018.
• Citações Web of Science: 2

Resumo

Smoke particles ejected into the atmosphere from biomass burning can modify the atmospheric composition around and even far from the sources. In late winter and early spring, biomass burning emissions from inland regions can be efficiently transported to urban areas in southeastern South America, thus affecting air quality in those areas. In this study, the Weather Research and Forecasting with Chemistry model was applied in order to investigate the impact of biomass burning sources on aerosol loadings and properties over the SAo Paulo Metropolitan Area (SPMA), in southeastern Brazil, during the period from 19 August to 3 September 2014. The model performance was evaluated using available aerosol measurements from the Narrowing the Uncertainties on Aerosol and Climate Change in SAo Paulo State project. The combined application of aerosol data and Weather Research and Forecasting with Chemistry simulations made it possible to represent some of the most important aerosol properties, such as particle number concentration and cloud condensation nuclei activation, in addition to evaluation of the impact of biomass burning by analyzing a 5-day transport event, from 22 to 26 August 2014. During this transport event, differences in the average predicted PM2.5 concentration reached 15g/m(3) (peaking at 20g/m(3) during the nighttime hours) over the SPMA, compared with 35g/m(3) over inland areas northwest and north of the SPMA. Biomass burning accounted for up to 20% of the baseline particle number concentration- and cloud condensation nuclei-weighted relative differences over the SPMA (2,300 and 1,400cm(-3), respectively). (AU)

• Processo FAPESP: 08/58104-8 - Narrowing the uncertainties on aerosol and climate changes in São Paulo State: NUANCES-SPS
• Beneficiário: Maria de Fátima Andrade
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático
• Processo FAPESP: 11/14365-5 - Aplicação dos dados de perfil vertical medidos por um sistema Lidar e pelo satélite CALIPSO no mapeamento da distribuição dos aerossóis na região metropolitana e no estado de São Paulo
• Beneficiário: Fábio Juliano da Silva Lopes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado