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Amazon boundary layer aerosol concentration sustained by vertical transport during rainfall.
Wang, Jian; Krejci, Radovan; Giangrande, Scott; Kuang, Chongai; Barbosa, Henrique M J; Brito, Joel; Carbone, Samara; Chi, Xuguang; Comstock, Jennifer; Ditas, Florian; Lavric, Jost; Manninen, Hanna E; Mei, Fan; Moran-Zuloaga, Daniel; Pöhlker, Christopher; Pöhlker, Mira L; Saturno, Jorge; Schmid, Beat; Souza, Rodrigo A F; Springston, Stephen R; Tomlinson, Jason M; Toto, Tami; Walter, David; Wimmer, Daniela; Smith, James N; Kulmala, Markku; Machado, Luiz A T; Artaxo, Paulo; Andreae, Meinrat O; Petäjä, Tuukka; Martin, Scot T.
Afiliação
  • Wang J; Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Krejci R; Department of Applied Environmental Science and Analytical Chemistry, Stockholm University, Stockholm 10691, Sweden.
  • Giangrande S; Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Kuang C; Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Barbosa HM; University of São Paulo, São Paulo 05508-900, Brazil.
  • Brito J; University of São Paulo, São Paulo 05508-900, Brazil.
  • Carbone S; University of São Paulo, São Paulo 05508-900, Brazil.
  • Chi X; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, 55128 Mainz, Germany.
  • Comstock J; School of Atmospheric Sciences, Nanjing University, and Collaborative Innovation Center for Climate Change, Jiangsu Province, 210023, Nanjing, China.
  • Ditas F; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
  • Lavric J; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, 55128 Mainz, Germany.
  • Manninen HE; Department of Biogeochemical Systems, Max Planck Institute for Biogeochemistry, 07745 Jena, Germany.
  • Mei F; Department of Physics, University of Helsinki, PO Box 64, FI-00014 Helsinki, Finland.
  • Moran-Zuloaga D; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
  • Pöhlker C; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, 55128 Mainz, Germany.
  • Pöhlker ML; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, 55128 Mainz, Germany.
  • Saturno J; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, 55128 Mainz, Germany.
  • Schmid B; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, 55128 Mainz, Germany.
  • Souza RA; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
  • Springston SR; Amazonas State University, Amazonas 69050-020, Brazil.
  • Tomlinson JM; Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Toto T; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
  • Walter D; Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Wimmer D; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, 55128 Mainz, Germany.
  • Smith JN; Department of Physics, University of Helsinki, PO Box 64, FI-00014 Helsinki, Finland.
  • Kulmala M; Department of Chemistry, University of California, Irvine, California 92697, USA.
  • Machado LA; Department of Physics, University of Helsinki, PO Box 64, FI-00014 Helsinki, Finland.
  • Artaxo P; National Institute for Space Research, São José dos Campos, São Paulo 12227-010, Brazil.
  • Andreae MO; University of São Paulo, São Paulo 05508-900, Brazil.
  • Petäjä T; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, 55128 Mainz, Germany.
  • Martin ST; Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093, USA.
Nature ; 539(7629): 416-419, 2016 11 17.
Article em En | MEDLINE | ID: mdl-27776357
ABSTRACT
The nucleation of atmospheric vapours is an important source of new aerosol particles that can subsequently grow to form cloud condensation nuclei in the atmosphere. Most field studies of atmospheric aerosols over continents are influenced by atmospheric vapours of anthropogenic origin (for example, ref. 2) and, in consequence, aerosol processes in pristine, terrestrial environments remain poorly understood. The Amazon rainforest is one of the few continental regions where aerosol particles and their precursors can be studied under near-natural conditions, but the origin of small aerosol particles that grow into cloud condensation nuclei in the Amazon boundary layer remains unclear. Here we present aircraft- and ground-based measurements under clean conditions during the wet season in the central Amazon basin. We find that high concentrations of small aerosol particles (with diameters of less than 50 nanometres) in the lower free troposphere are transported from the free troposphere into the boundary layer during precipitation events by strong convective downdrafts and weaker downward motions in the trailing stratiform region. This rapid vertical transport can help to maintain the population of particles in the pristine Amazon boundary layer, and may therefore influence cloud properties and climate under natural conditions.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Chuva / Aerossóis País/Região como assunto: America do sul / Brasil Idioma: En Revista: Nature Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Chuva / Aerossóis País/Região como assunto: America do sul / Brasil Idioma: En Revista: Nature Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Estados Unidos