The influence of the vertical distribution of emissions on tropospheric chemistry
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. Th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2009-12-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | http://www.atmos-chem-phys.net/9/9417/2009/acp-9-9417-2009.pdf |
| _version_ | 1828385263890464768 |
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| author | J. Van Aardenne P. Jöckel A. Pozzer |
| author_facet | J. Van Aardenne P. Jöckel A. Pozzer |
| author_sort | J. Van Aardenne |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-10T05:17:35Z |
| format | Article |
| id | doaj.art-361527c09b3f404bb8ad71cfc574ecaf |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-10T05:17:35Z |
| publishDate | 2009-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-361527c09b3f404bb8ad71cfc574ecaf2022-12-22T02:00:55ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242009-12-0192494179432The influence of the vertical distribution of emissions on tropospheric chemistryJ. Van AardenneP. JöckelA. PozzerThe 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.http://www.atmos-chem-phys.net/9/9417/2009/acp-9-9417-2009.pdf |
| spellingShingle | J. Van Aardenne P. Jöckel A. Pozzer The influence of the vertical distribution of emissions on tropospheric chemistry Atmospheric Chemistry and Physics |
| title | The influence of the vertical distribution of emissions on tropospheric chemistry |
| title_full | The influence of the vertical distribution of emissions on tropospheric chemistry |
| title_fullStr | The influence of the vertical distribution of emissions on tropospheric chemistry |
| title_full_unstemmed | The influence of the vertical distribution of emissions on tropospheric chemistry |
| title_short | The influence of the vertical distribution of emissions on tropospheric chemistry |
| title_sort | influence of the vertical distribution of emissions on tropospheric chemistry |
| url | http://www.atmos-chem-phys.net/9/9417/2009/acp-9-9417-2009.pdf |
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