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| Titel |
The atmospheric conditions over Europe and the Mediterranean, favoring snow events in Athens, Greece |
| VerfasserIn |
E. E. Houssos, C. J. Lolis, A. Bartzokas |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Mediterranean storms and extreme events in an era of climate change ; Nr. 12 (2007-09-21), S.127-135 |
| Datensatznummer |
250010368
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| Publikation (Nr.) |
 copernicus.org/adgeo-12-127-2007.pdf |
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| Zusammenfassung |
| The 3-dimensional structure and the evolution of atmospheric circulation
favoring snowfall in Athens are examined. The study refers to 61 snow
events, which occurred during the period 1958–2001. For each one of the
events, the patterns of MSL pressure, 850 hPa and 500 hPa air temperatures,
500 hPa geopotential height and 1000–500 hPa thickness are constructed for
the European region, for the day before (D-1), the first day (D) and the day
after the end of the event (END). A statistical methodology involving Factor
Analysis and Cluster Analysis is applied to the above data sets and the 61
cases are finally classified into five clusters. These clusters are
generally characterized by a north-easterly flow in the lower troposphere
over the Athens area. This flow is associated with the presence of a low
pressure system around Cyprus and an anticyclone over Europe. The position,
the intensity and the trajectories of the surface and the upper air systems
during D-1, D and END days are generally different among the five clusters. |
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