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| Titel |
Scenarios in the development of Mediterranean cyclones |
| VerfasserIn |
M. Romem, B. Ziv, H. Saaroni |
| 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 (2007-07-05), S.59-65 |
| Datensatznummer |
250010359
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| Publikation (Nr.) |
 copernicus.org/adgeo-12-59-2007.pdf |
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| Zusammenfassung |
The Mediterranean is one of the most cyclogenetic regions in the world. The
cyclones are concentrated along its northern coasts and their tracks are
oriented more or less west-east, with several secondary tracks connecting
them to Europe and to North Africa. The aim of this study is to examine
scenarios in the development of Mediterranean cyclones, based on five
selected winter seasons (October–March). We detected the cyclones
subjectively using 6-hourly Sea-Level Pressure maps, based on the NCAR/NCEP
reanalysis archive.
HMSO (1962) has shown that most Mediterranean cyclones (58%) enter the
Mediterranean from the Atlantic Ocean (through Biscay and Gibraltar), and
from the south-west, the Sahara Desert, while the rest are formed in the
Mediterranean Basin itself. Our study revealed that only 13% of the
cyclones entered the Mediterranean, while 87% were generated in the
Mediterranean Basin. The entering cyclones originate in three different
regions: the Sahara Desert (6%), the Atlantic Ocean (4%), and Western
Europe (3%).
The cyclones formed within the Mediterranean Basin were found to generate
under the influence of external cyclonic systems, i.e. as "daughter
cyclones" to "parent cyclones" or troughs. These parent systems are located
in three regions: Europe (61%), North Africa and the Red Sea (34.5%)
and the Mediterranean Basin itself (4.5%). The study presents scenarios
in the development of Mediterranean cyclones during the winter season,
emphasizing the cyclogenesis under the influence of various external
forcing.
The large difference with respect to the findings of HMSO (1962) is partly
explained by the dominance of spring cyclones generating in the Sahara
Desert, especially in April and May that were not included in our study
period. |
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