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Atmospheric Acetaldehyde: Importance of Air-Sea Exchange and a Missing Source in the Remote Troposphere.
Wang, Siyuan; Apel, Eric C; Hornbrook, Rebecca S; Hills, Alan; Emmons, Louisa K; Tilmes, Simone; Lamarque, Jean-François; Jimenez, Jose L; Campuzano-Jost, Pedro; Nault, Benjamin A; Crounse, John D; Wennberg, Paul O; Ryerson, Thomas B; Thompson, Chelsea R; Peischl, Jeff; Moore, Fred; Nance, David; Hall, Brad; Elkins, James; Tanner, David; Gregory Huey, L; Hall, Samuel R; Ullmann, Kirk; Orlando, John J; Tyndall, Geoff S; Flocke, Frank M; Ray, Eric; Hanisco, Thomas F; Wolfe, Glenn M; St Clair, Jason; Commane, Róisín; Daube, Bruce; Barletta, Barbara; Blake, Donald R; Weinzierl, Bernadett; Dollner, Maximilian; Conley, Andrew; Vitt, Francis; Wofsy, Steven C; Riemer, Daniel D.
Afiliação
  • Wang S; Advanced Study Program (ASP), National Center for Atmospheric Research, Boulder CO, 80301.
  • Apel EC; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Hornbrook RS; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Hills A; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Emmons LK; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Tilmes S; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Lamarque JF; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Jimenez JL; Climate and Global Dynamics, National Center for Atmospheric Research, Boulder CO, 80301.
  • Campuzano-Jost P; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Nault BA; Climate and Global Dynamics, National Center for Atmospheric Research, Boulder CO, 80301.
  • Crounse JD; Department of Chemistry and Biochemistry, University of Colorado Boulder, CO 80309.
  • Wennberg PO; Cooperative Institute for Research in the Environmental Sciences, University of Colorado Boulder, CO 80309.
  • Ryerson TB; Department of Chemistry and Biochemistry, University of Colorado Boulder, CO 80309.
  • Thompson CR; Cooperative Institute for Research in the Environmental Sciences, University of Colorado Boulder, CO 80309.
  • Peischl J; Department of Chemistry and Biochemistry, University of Colorado Boulder, CO 80309.
  • Moore F; Cooperative Institute for Research in the Environmental Sciences, University of Colorado Boulder, CO 80309.
  • Nance D; Division of Engineering and Applied Science, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125.
  • Hall B; Division of Engineering and Applied Science, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125.
  • Elkins J; Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305.
  • Tanner D; Cooperative Institute for Research in the Environmental Sciences, University of Colorado Boulder, CO 80309.
  • Gregory Huey L; Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305.
  • Hall SR; Cooperative Institute for Research in the Environmental Sciences, University of Colorado Boulder, CO 80309.
  • Ullmann K; Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305.
  • Orlando JJ; Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305.
  • Tyndall GS; Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305.
  • Flocke FM; Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305.
  • Ray E; Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305.
  • Hanisco TF; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332.
  • Wolfe GM; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332.
  • St Clair J; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Commane R; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Daube B; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Barletta B; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Blake DR; Atmospheric Chemistry Observations and Modeling, National Center for Atmospheric Research, Boulder CO, 80301.
  • Weinzierl B; Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305.
  • Dollner M; Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771.
  • Conley A; Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771.
  • Vitt F; Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD 21228.
  • Wofsy SC; Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771.
  • Riemer DD; Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD 21228.
Geophys Res Lett ; 46(10): 5601-5613, 2019 May 28.
Article em En | MEDLINE | ID: mdl-32606484
ABSTRACT
We report airborne measurements of acetaldehyde (CH3CHO) during the first and second deployments of the National Aeronautics and Space Administration (NASA) Atmospheric Tomography Mission (ATom). The budget of CH3CHO is examined using the Community Atmospheric Model with chemistry (CAM-chem), with a newly-developed online air-sea exchange module. The upper limit of the global ocean net emission of CH3CHO is estimated to be 34 Tg a-1 (42 Tg a-1 if considering bubble-mediated transfer), and the ocean impacts on tropospheric CH3CHO are mostly confined to the marine boundary layer. Our analysis suggests that there is an unaccounted CH3CHO source in the remote troposphere and that organic aerosols can only provide a fraction of this missing source. We propose that peroxyacetic acid (PAA) is an ideal indicator of the rapid CH3CHO production in the remote troposphere. The higher-than-expected CH3CHO measurements represent a missing sink of hydroxyl radicals (and halogen radical) in current chemistry-climate models.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article