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| Titel |
Coupled climate model simulations of Mediterranean winter cyclones and large-scale flow patterns |
| VerfasserIn |
B. Ziv, Y. Kushnir, J. Nakamura, N. H. Naik, T. Harpaz |
| 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 Science ; 13, no. 3 ; Nr. 13, no. 3 (2013-03-26), S.779-793 |
| Datensatznummer |
250018398
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| Publikation (Nr.) |
 copernicus.org/nhess-13-779-2013.pdf |
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| Zusammenfassung |
The study aims to evaluate the ability of global, coupled climate models to
reproduce the synoptic regime of the Mediterranean Basin. The output of
simulations of the 9 models included in the IPCC CMIP3 effort is compared
to the NCEP-NCAR reanalyzed data for the period 1961–1990. The study
examined the spatial distribution of cyclone occurrence, the mean
Mediterranean upper- and lower-level troughs, the inter-annual variation and
trend in the occurrence of the Mediterranean cyclones, and the main
large-scale circulation patterns, represented by rotated EOFs of 500 hPa and
sea level pressure.
The models reproduce successfully the two maxima in cyclone density in the
Mediterranean and their locations, the location of the average upper- and
lower-level troughs, the relative inter-annual variation in cyclone
occurrences and the structure of the four leading large scale EOFs. The main
discrepancy is the models' underestimation of the cyclone density in the
Mediterranean, especially in its western part. The models' skill in
reproducing the cyclone distribution is found correlated with their spatial
resolution, especially in the vertical. The current improvement in model
spatial resolution suggests that their ability to reproduce the
Mediterranean cyclones would be improved as well. |
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