The influence of the vertical distribution of emissions on tropospheric chemistry
Item
Title (Dublin Core)
The influence of the vertical distribution of emissions on tropospheric chemistry
Description (Dublin Core)
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 NO<sub>x</sub> (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.
Creator (Dublin Core)
Pozzer, A.
Jöckel, P.
Aardenne, J.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-9-9417-2009
https://acp.copernicus.org/articles/9/9417/2009/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
