Unit:
Κατεύθυνση Φυσική Περιβάλλοντος (ΕΦΑΡΜΟΣΜΕΝΗ ΦΥΣΙΚΗ)Library of the School of Science
Supervisors info:
Φλόκα Έλενα Αναπλ. Καθηγήτρια ΕΚΠΑ (Επιβλέπουσα), Μιχαλοπούλου Χαρά Επίκ. Καθηγήτρια ΕΚΠΑ, Σοφιανός Σαράντης Λέκτορας ΕΚΠΑ
Original Title:
Μελέτη πλημμυρικών επεισοδίων στην Κρήτη που συνδέονται με συστήματα συνοπτικής κλίμακας
Summary:
In this study, an attempt is made to associate cyclones over the eastern
Mediterranean region with a number of flood events occurring in Crete during
the period 1990 – 2010. Furthermore, a comparison is made with the whole number
of cyclones passing over Crete in the same period.
The atmospheric circulation conditions during the flood events were examined
using the ERA-INTERIM reanalysis datasets with resolution Τ255 for spectral
field (or about 76km x 76km) available from ECMWF. Our results were compared
with synoptic maps available from ECMWF. The Melbourne University Cyclone
Tracking Algorithm was employed to examine the genesis, tracks, radius, depth
and intensity of these cyclones and the VTS scheme was employed for their
vertical tracking. The atmospheric circulation was classified to 6 synoptic
types.
It was found that for the vast majority of the flood events, the respective
cyclones were developed over the North African coasts and South Italy
contrasting the preference of all cyclones passing over Crete to develop over
Southeast Mediterranean. Additionally the cyclones associated with the flood
events are more intense than the others and catch their minimum pressure near
Crete, with north - westward tiling with height. The cyclones mainly appear as
closed systems at 500 hPa, revealing characteristics of vertically organized
baroclinic systems.
Keywords:
Floods, Eastern Mediterranean, MS tracking scheme, Cyclonic tracks, Extreme events
Number of references:
157
File:
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document.pdf
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