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| Titel |
A climatological study of rural surface ozone in central Greece |
| VerfasserIn |
P. D. Kalabokas, 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 ; 4, no. 4 ; Nr. 4, no. 4 (2004-07-13), S.1139-1147 |
| Datensatznummer |
250001844
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| Publikation (Nr.) |
 copernicus.org/acp-4-1139-2004.pdf |
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| Zusammenfassung |
| Recent studies show that surface ozone levels at rural sites in Greece are
generally high when compared with rural ozone measurements at northern
European sites. The area of SE Europe, including Greece, is not very well
monitored regarding rural ozone in comparison to central and northern
Europe. In order to have the best possible picture of the rural surface
ozone climatology in the area, based on the available data-sets of long-term
continuous monitoring stations, the 10-year measurement records (1987-1996)
of the Athens peripheral station of Liossia, (12 km N of the city center)
and the urban background station of Geoponiki (3 km W) as well as the 4-year
record (1996-1999) of the rural station of Aliartos (100 km NW of Athens),
are analyzed in this paper. The data for Liossia and Geoponiki stations are
screened for cases of strong airflow from rural areas (N-NE winds stronger
than 5 m/s). The variation characteristics of the average rural ozone
afternoon levels (12:00-18:00), with the best vertical atmospheric
mixing, are mainly examined since these measurements are expected to be
representative of the broader area. In all three stations there is a
characteristic seasonal variation of rural ozone concentrations with lowest
winter afternoon values at about 50 μg/m3 in December-January and
average summer afternoon values at about 120 μg/m3 in July-August,
indicating that high summer values are observed all over the area. The rural
summer afternoon ozone values are very well correlated between the three
stations, implying spatial homogeneity all over the area but also temporal
homogeneity, since during the 13-year period 1987-1999 the rural afternoon
ozone levels remained almost constant around the value of 120 μg/m3. |
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