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| Titel |
Technical Note: A diagnostic for ozone contributions of various NOx emissions in multi-decadal chemistry-climate model simulations |
| VerfasserIn |
V. Grewe |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 4, no. 3 ; Nr. 4, no. 3 (2004-05-17), S.729-736 |
| Datensatznummer |
250001712
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| Publikation (Nr.) |
 copernicus.org/acp-4-729-2004.pdf |
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| Zusammenfassung |
| Nitrogen oxide (NOx=NO+NO2) emissions from various sources
contribute to the ozone budget. The identification of these
contributions is important, e.g. for the assessment of
emissions from traffic. The non-linear character of ozone
chemistry complicates the online diagnosis during
multi-decadal chemistry-climate simulations. A methodology
is suggested, which is efficient enough to be incorporated
in multi-decadal simulations. Eight types of NOx emissions
are included in the model. For each
a NOy (=all N components, except N2 and N2O)
tracer and an ozone tracer is
included in the model, which experience the same emissions and
loss processes like the online chemistry fields. To calculate the
ozone changes caused by an individual NOx emission,
the assumption is made that
the NOx relative contributions from various sources
are identical to the NOy relative contributions. To evaluate
this method each NOx emission
has been increased by 5% and
a detailed error analysis is given. In the regions of the
main impact of individual sources
the potential error of the calculated contribution
is significantly smaller than the contribution.
Moreover, the changes caused by an increase of the
emissions of 5% were detected with a higher accuracy
than the potential error of the absolute contribution. |
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