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| Titel |
Vertical ozone measurements in the troposphere over the Eastern Mediterranean and comparison with Central Europe |
| VerfasserIn |
P. D. Kalabokas, A. Volz-Thomas, J. Brioude, V. Thouret, J.-P. Cammas, C. C. Repapis |
| 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 ; 7, no. 14 ; Nr. 7, no. 14 (2007-07-23), S.3783-3790 |
| Datensatznummer |
250005138
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| Publikation (Nr.) |
 copernicus.org/acp-7-3783-2007.pdf |
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| Zusammenfassung |
| Vertical ozone profiles measured in the period 1996–2002 in the framework of
the MOZAIC project (Measurement of Ozone and Water Vapor by Airbus in
Service Aircraft) for flights connecting Central Europe to the Eastern
Mediterranean basin (Heraklion, Rhodes, Antalya) were analysed in order to
evaluate the high rural ozone levels recorded in the Mediterranean area
during summertime. The 77 flights during summer (JJAS) showed substantially
(10–12 ppb, 20–40%) enhanced ozone mixing ratios in the lower troposphere
over the Eastern Mediterranean frequently exceeding the 60 ppb, 8-h EU
air quality standard, whereas ozone between 700 hPa and 400 hPa was only
slightly (3–5 ppb, 5–10%) higher than over Central Europe. Analysis of
composite weather maps for the high and low ozone cases, as well as
back-trajectories and vertical profiles of carbon monoxide, suggest that the
main factor leading to high tropospheric ozone values in the area is
anticyclonic influence, in combination with a persistent northerly flow in
the lower troposphere during summertime over the Aegean. On the other hand
the lowest ozone levels are associated with low-pressure systems, especially
the extension of the Middle East low over the Eastern Mediterranean area. |
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