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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2017

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Multi-model study of mercury dispersion in the atmosphere: vertical and interhemispheric distribution of mercury species

Anno di pubblicazione: 2017

Formato: Elettronico

Autori: Bieser, J. and Slemr, F. and Ambrose, J. and Brenninkmeijer, C. and Brooks, S. and Dastoor, A. and DeSimone, F. and Ebinghaus, R. and Gencarelli, C. N. and Geyer, B. and Gratz, L. E. and Hedgecock, I. M. and Jaffe, D. and Kelley, P. and Lin, C.-J. and Jaegle, L. and Matthias, V. and Ryjkov, A. and Selin, N. E. and Song, S. and Travnikov, O. and Weigelt, A. and Luke, W. and Ren, X. and Zahn, A. and Yang, X. and Zhu, Y. and Pirrone, N.

Affiliazioni autori: Johanes Bieser1,2, Franz Slemr3, , Jesse Ambrose4, , Carl Brenningkmeijer3, Steve Brooks5,6, Ashu Dastoor7, Francesco DeSimone8, Ralf Ebinghaus1, Christian N. Gencarelli8, Beate Geyer1, , Lynne E. Gratz9, , Ian M. Hedgecock8, , Daniel Jaffe4,10, Paul Kelley5,11, Che-Jen Lin12, Volker Matthias1, Andrei Ryjkov7, Noelle E. Selin13,14, Shaojie Song13, Oleg Travnikov15, Andreas Weigelt1,16, Winston Luke5, Xinrong Ren5,11,17, Andreas Zahn18, Xin Yang19, Yun Zhu20, Nicola Pirrone21, 1 Helmholtz Zentrum Geesthacht, 21052 Geesthacht, Germany 2 DLR - Deutsches Luft und Raumfahrtzentrum, Münchener Straße 20, 82234 Weßling, Germany 3 Max-Planck-Institute for Chemistry (MPI), Hahn-Meitner-Weg 1, 55128 Mainz, Germany 4 School of Science, Technology, Engineering and Mathematics, University of Washington-Bothell, Bothell, WA, USA 5 Air Resources Laboratory, National Oceanic and Atmospheric Administration, 5830 University Research Court, College Park, MD 20740, USA 6 Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee Space Institute, 411 BH Goethert Parkway, Tullahoma, TN 37388, USA 7 ECCC - Air Quality Research Division, Environment and Climate Change Canada, Dorval, Canada 8 CNR-Institute of Atmospheric Pollution Research, Division of Rende, Rende, Italy 9 Environmental Program, Colorado College, Colorado Springs, CO, USA 10 School of Science, Technology, Engineering and Mathematics, University of Washington-Bothell, Bothell, WA, USA 11 Cooperative Institute for Climate and Satellites, University of Maryland, 5825 University Research Court, College Park, MD 20740, USA 12 Center for Advances in Water and Air Quality, Lamar University, Beaumont, Texas, USA. 13 Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA 14 Institute for Data, Systems, and Society, Massachusetts Institute of Technology, Cambridge, MA, USA 15 Meteorological Synthesizing Centre - East of EMEP, Moscow, Russia 16 Federal Maritime and Hydrographic Agency (BSH), Hamburg, Germany 17 Department of Earth, Ocean, and Atmospheric Science, Florida State University, 117 North Woodward Avenue, Tallahassee, FL 32306, USA 18 Institut für Meteorologie und Klimaforschung (IMK-ASF), Karlsruhe Institut für Technologie, Hermann-von-Helmholtz-Platz 1, 76344 Leopoldshafen, Germany 19 British Antarctic Survey, Cambridge, UK 20 South China University of Technology, School of Environment and Energy, Guangzhou, China 21 CNR Institute of Atmospheric Pollution Research, Rome, Italy

Autori CNR:


Lingua: inglese

Abstract: Atmospheric chemistry and transport of mercury play a key role in the global mercury cycle. However, there are still considerable knowledge gaps concerning the fate of mercury in the atmosphere. This is the second part of a model intercomparison study investigating the impact of atmospheric chemistry and emissions on mercury in the atmosphere. While the first study focused on ground-based observations of mercury concentration and deposition, here we investigate the vertical and interhemispheric distribution and speciation of mercury from the planetary boundary layer to the lower stratosphere. So far, there have been few model studies investigating the vertical distribution of mercury, mostly focusing on single aircraft campaigns. Here, we present a first comprehensive analysis based on various aircraft observations in Europe, North America, and on intercontinental flights. The investigated models proved to be able to reproduce the distribution of total and elemental mercury concentrations in the troposphere including interhemispheric trends. One key aspect of the study is the investigation of mercury oxidation in the troposphere. We found that different chemistry schemes were better at reproducing observed oxidized mercury patterns depending on altitude. High concentrations of oxidized mercury in the upper troposphere could be reproduced with oxidation by bromine while elevated concentrations in the lower troposphere were better reproduced by OH and ozone chemistry. However, the results were not always conclusive as the physical and chemical parameterizations in the chemistry transport models also proved to have a substantial impact on model results.

Lingua abstract: inglese

Pagine da: 6925

Pagine a: 6955


Atmospheric chemistry and physics Copernicus Publ.
Paese di pubblicazione: Germania
Lingua: inglese
ISSN: 1680-7324

Numero volume: 17

Numero fascicolo: 11

DOI: 10.5194/acp-17-6925-2017

Referee: Sì: Internazionale

Stato della pubblicazione: Published version

Parole chiave:

  • Mercury
  • Model
  • Measurements
  • Troposphere
  • Vertical Distribution

URL: http://www.atmos-chem-phys.net/17/6925/2017/

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