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| Titel |
Mediterranean cyclone characteristics related to precipitation occurrence in Crete, Greece |
| VerfasserIn |
V. Iordanidou, A. G. Koutroulis, I. K. Tsanis |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 15, no. 8 ; Nr. 15, no. 8 (2015-08-13), S.1807-1819 |
| Datensatznummer |
250119636
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| Publikation (Nr.) |
 copernicus.org/nhess-15-1807-2015.pdf |
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| Zusammenfassung |
| The characteristics of the cyclone tracks that caused precipitation events
of variable intensity for the period 1979–2011 over the island of Crete are
presented. The data set used for cyclone identification is the 0.5° × 0.5°, 30 years European Centre
for Medium-Range Weather Forecasts
(ECMWF) ERA-Interim mean sea-level pressure. Cyclone characteristics are
calculated with the aid of the Melbourne University algorithm (MS scheme). Daily
precipitation data from a dense gauging network over the island of Crete are
also used for the classification of the precipitation events in terms of
rain accumulation (intensity). Daily precipitation is classified in three
categories and the associated cyclones are chosen according to their
distance from Crete island. The seasonal and annual cycle of the physical
characteristics of the cyclone tracks are investigated with respect to the
cyclones' relative position to the island of Crete. It was found that
cyclones affecting Crete most frequently approach from the western side of
the island and the actual cyclone centers associated with precipitation
events are usually located northwest and southeast of the Crete domain.
Cyclone-induced rainfall increases in function to cyclones' depth, radius
and propagation velocity increase as well as cyclones' pressure decrease.
Spring cyclones that affect Crete with rainfall present lower pressures and
higher cyclone propagation velocity in contrast to the ones associated with
winter and autumn precipitation events. The examination of the relation
between cyclone characteristics and precipitation occurrence provides
valuable information related to forecasting potential and management of the
water resources and the rainfall extremes. |
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