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| Titel |
The ENSO signal in atmospheric composition fields: emission-driven versus dynamically induced changes |
| VerfasserIn |
A. Inness, A. Benedetti, J. Flemming, V. Huijnen, J. W. Kaiser, M. Parrington, S. Remy |
| 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 ; 15, no. 15 ; Nr. 15, no. 15 (2015-08-14), S.9083-9097 |
| Datensatznummer |
250119968
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| Publikation (Nr.) |
 copernicus.org/acp-15-9083-2015.pdf |
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| Zusammenfassung |
| The El Niño–Southern Oscillation (ENSO) not only affects
meteorological fields but also has a large impact on atmospheric
composition. Atmospheric composition fields from the Monitoring Atmospheric
Composition and Climate (MACC) reanalysis are used to identify the ENSO
signal in tropospheric ozone, carbon monoxide, nitrogen oxide and smoke
aerosols, concentrating on the months October to December. During El
Niño years, all of these fields have increased concentrations over maritime
South East Asia in October. The MACC Composition Integrated Forecasting
System (C-IFS) model is used to quantify the relative magnitude of
dynamically induced and emission-driven changes in the atmospheric
composition fields. While changes in tropospheric ozone are a combination of
dynamically induced and emission-driven changes, the changes in carbon
monoxide, nitrogen oxides and smoke aerosols are almost entirely emission-driven in the MACC model. The ozone changes continue into December, i.e.
after the end of the Indonesian fire season while changes in the other
fields are confined to the fire season. |
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