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| Titel |
Summertime tropospheric ozone assessment over the Mediterranean region using the thermal infrared IASI/MetOp sounder and the WRF-Chem model |
| VerfasserIn |
S. Safieddine, A. Boynard, P.-F. Coheur, D. Hurtmans, G. Pfister, B. Quennehen, J. L. Thomas, J.-C. Raut, K. S. Law, Z. Klimont, J. Hadji-Lazaro, M. George, C. Clerbaux |
| 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. 18 ; Nr. 14, no. 18 (2014-09-23), S.10119-10131 |
| Datensatznummer |
250119059
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| Publikation (Nr.) |
 copernicus.org/acp-14-10119-2014.pdf |
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| Zusammenfassung |
| Over the Mediterranean region, elevated tropospheric ozone (O3) values
are recorded, especially in summer. We use the thermal Infrared Atmospheric
Sounding Interferometer (IASI) and the Weather Research and Forecasting
Model with Chemistry (WRF-Chem) to understand and interpret the factors and
emission sources responsible for the high O3 concentrations observed in
the Mediterranean troposphere. Six years (2008–2013) of IASI data have been
analyzed and results show consistent maxima during summer, with an increase of up to
22% in the [0–8] km O3 column in the eastern part of the basin
compared to the middle of the basin. We focus on summer 2010 to investigate
the processes that contribute to these summer maxima. Using two modeled
O3 tracers (inflow to the model domain and local anthropogenic
emissions), we show that, between the surface and 2 km, O3 is mostly
formed from anthropogenic emissions, while above 4 km it is mostly transported
from outside the domain or from stratospheric origins. Evidence of
stratosphere-to-troposphere exchange (STE) events in the eastern part of the basin
is shown, and corresponds to a low water vapor mixing ratio and high
potential vorticity. |
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