Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year 5.689
  • CiteScore value: 5.44 CiteScore 5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H index value: 161 Scimago H index 161
Volume 9, issue 24 | Copyright

Special issue: The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

Atmos. Chem. Phys., 9, 9417-9432, 2009
https://doi.org/10.5194/acp-9-9417-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.

  15 Dec 2009

15 Dec 2009

The influence of the vertical distribution of emissions on tropospheric chemistry

A. Pozzer2,1, P. Jöckel*,2, and J. Van Aardenne3 A. Pozzer et al.
  • 1The Cyprus Institute, Energy, Environment and Water Research Centre, Nicosia, Cyprus
  • 2Max-Planck Institute of Chemistry, Air Chemistry Department, Mainz, Germany
  • 3European Commission, DG Joint Research Centre, Ispra, Italy
  • *now at: Deutsches Zentrum fuer Luft- und Raumfahrt, Oberpfaffenhofen, Wessling, Germany

Abstract. The atmospheric chemistry general circulation model EMAC (ECHAM5/MESSy atmospheric chemistry) is used to investigate the effect of height dependent emissions on tropospheric chemistry. In a sensitivity simulation, anthropogenic and biomass burning emissions are released in the lowest model layer. The resulting tracer distributions are compared to those of a former simulation applying height dependent emissions. Although the differences between the two simulations in the free troposphere are small (less than 5%), large differences are present in polluted regions at the surface, in particular for NOx (more than 100%), CO (up to 30%) and non-methane hydrocarbons (up to 30%), whereas for OH the differences at the same locations are somewhat lower (15%). Global ozone formation is virtually unaffected by the choice of the vertical distribution of emissions. Nevertheless, local ozone changes can be up to 30%. Model results of both simulations are further compared to observations from field campaigns and to data from measurement stations.

Download & links
Publications Copernicus
Special issue
Download
Citation
Share