 |
| Titel |
The influence of the vertical distribution of emissions on tropospheric chemistry |
| VerfasserIn |
A. Pozzer, P. Jöckel, J. Aardenne |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 9, no. 24 ; Nr. 9, no. 24 (2009-12-15), S.9417-9432 |
| Datensatznummer |
250007800
|
| Publikation (Nr.) |
 copernicus.org/acp-9-9417-2009.pdf |
|
|
|
|
|
| Zusammenfassung |
| 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. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|