Urban pollution greatly enhances formation of natural aerosols over the Amazon rainforest

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DOI

  • Manish Shrivastava, Pacific Northwest National Laboratory
  • ,
  • Meinrat O. Andreae, King Saud University, Riyadh , Scripps Institution of Oceanography, Max-Planck-Institute for Chemistry
  • ,
  • Paulo Artaxo, Universidade de São Paulo – USP
  • ,
  • Henrique M.J. Barbosa, Universidade de São Paulo – USP
  • ,
  • Larry K. Berg, Pacific Northwest National Laboratory
  • ,
  • Joel Brito, Université of Lille
  • ,
  • Joseph Ching, Meteorological Research Institute
  • ,
  • Richard C. Easter, Pacific Northwest National Laboratory
  • ,
  • Jiwen Fan, Pacific Northwest National Laboratory
  • ,
  • Jerome D. Fast, Pacific Northwest National Laboratory
  • ,
  • Zhe Feng, Pacific Northwest National Laboratory
  • ,
  • Jose D. Fuentes, The Pennsylvania State University
  • ,
  • Marianne Glasius
  • Allen H. Goldstein, UC Berkeley
  • ,
  • Eliane Gomes Alves, Instituto Nacional de Pesquisas da Amazônia
  • ,
  • Helber Gomes, Federal University of Alagoas
  • ,
  • Dasa Gu, UC Irvine
  • ,
  • Alex Guenther, Pacific Northwest National Laboratory, UC Irvine
  • ,
  • Shantanu H. Jathar, Colorado State University
  • ,
  • Saewung Kim, UC Irvine
  • ,
  • Sijia Lou, Pacific Northwest National Laboratory
  • ,
  • Scot T. Martin, Harvard University
  • ,
  • V. Faye McNeill, Columbia University in the City of New York
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  • Adan Medeiros, Amazonas State University
  • ,
  • Suzane S. de Sá, Harvard University
  • ,
  • John E. Shilling, Pacific Northwest National Laboratory
  • ,
  • Stephen R. Springston, Brookhaven National Laboratory
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  • R. A.F. Souza, Amazonas State University
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  • Joel A. Thornton, University of Washington, Seattle
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  • Gabriel Isaacman-VanWertz, Virginia Tech
  • ,
  • Lindsay D. Yee, UC Berkeley
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  • Rita Ynoue, Universidade de São Paulo – USP
  • ,
  • Rahul A. Zaveri, Pacific Northwest National Laboratory
  • ,
  • Alla Zelenyuk, Pacific Northwest National Laboratory
  • ,
  • Chun Zhao, University of Science and Technology of China

One of the least understood aspects in atmospheric chemistry is how urban emissions influence the formation of natural organic aerosols, which affect Earth’s energy budget. The Amazon rainforest, during its wet season, is one of the few remaining places on Earth where atmospheric chemistry transitions between preindustrial and urban-influenced conditions. Here, we integrate insights from several laboratory measurements and simulate the formation of secondary organic aerosols (SOA) in the Amazon using a high-resolution chemical transport model. Simulations show that emissions of nitrogen-oxides from Manaus, a city of ~2 million people, greatly enhance production of biogenic SOA by 60–200% on average with peak enhancements of 400%, through the increased oxidation of gas-phase organic carbon emitted by the forests. Simulated enhancements agree with aircraft measurements, and are much larger than those reported over other locations. The implication is that increasing anthropogenic emissions in the future might substantially enhance biogenic SOA in pristine locations like the Amazon.

OriginalsprogEngelsk
Artikelnummer1046
TidsskriftNature Communications
Vol/bind10
Nummer1
Antal sider12
ISSN2041-1723
DOI
StatusUdgivet - 5 mar. 2019

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