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| Titel |
Systematic analysis of tropospheric NO2 long-range transport events detected in GOME-2 satellite data |
| VerfasserIn |
A. W. Zien, A. Richter, A. Hilboll, A.-M. Blechschmidt, J. P. Burrows |
| 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 ; 14, no. 14 ; Nr. 14, no. 14 (2014-07-18), S.7367-7396 |
| Datensatznummer |
250118896
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| Publikation (Nr.) |
 copernicus.org/acp-14-7367-2014.pdf |
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| Zusammenfassung |
| Intercontinental long-range transport (LRT) events of NO2 relocate
the effects of air pollution from emission regions to remote, pristine
regions. We detect transported plumes in tropospheric NO2 columns
measured by the GOME-2/MetOp-A instrument with a specialized algorithm and
trace the plumes to their sources using the HYSPLIT Lagrangian transport
model. With this algorithm we find 3808 LRT events over the ocean for the
period 2007 to 2011. LRT events occur frequently in the mid-latitudes,
emerging usually from coastal high-emission regions. In the free troposphere,
plumes of NO2 can travel for several days to the polar oceanic
atmosphere or to other continents. They travel along characteristic routes
and originate from both continuous anthropogenic emission and emission events
such as bush fires. Most NO2 LRT events occur during autumn and
winter months, when meteorological conditions and emissions are most
favorable. The evaluation of meteorological data shows that the observed
NO2 LRT is often linked to cyclones passing over an emission region. |
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