Universität zu Köln

Flaounas, Emmanouil, Kelemen, Fanni Dora, Wernli, Heini ORCID: 0000-0001-9674-4837, Gaertner, Miguel Angel, Reale, Marco, Sanchez-Gomez, Emilia, Lionello, Piero, Calmanti, Sandro, Podrascanin, Zorica, Somot, Samuel, Akhtar, Naveed, Romera, Raquel and Conte, Dario (2018). Assessment of an ensemble of ocean-atmosphere coupled and uncoupled regional climate models to reproduce the climatology of Mediterranean cyclones. Clim. Dyn., 51 (3). S. 1023 - 1041. NEW YORK: SPRINGER. ISSN 1432-0894

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Abstract

This study aims to assess the skill of regional climate models (RCMs) at reproducing the climatology of Mediterranean cyclones. Seven RCMs are considered, five of which were also coupled with an oceanic model. All simulations were forced at the lateral boundaries by the ERA-Interim reanalysis for a common 20-year period (1989-2008). Six different cyclone tracking methods have been applied to all twelve RCM simulations and to the ERA-Interim reanalysis in order to assess the RCMs from the perspective of different cyclone definitions. All RCMs reproduce the main areas of high cyclone occurrence in the region south of the Alps, in the Adriatic, Ionian and Aegean Seas, as well as in the areas close to Cyprus and to Atlas mountains. The RCMs tend to underestimate intense cyclone occurrences over the Mediterranean Sea and reproduce 24-40 % of these systems, as identified in the reanalysis. The use of grid nudging in one of the RCMs is shown to be beneficial, reproducing about 60 % of the intense cyclones and keeping a better track of the seasonal cycle of intense cyclogenesis. Finally, the most intense cyclones tend to be similarly reproduced in coupled and uncoupled model simulations, suggesting that modeling atmosphere-ocean coupled processes has only a weak impact on the climatology and intensity of Mediterranean cyclones.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Flaounas, Emmanouil UNSPECIFIED UNSPECIFIED UNSPECIFIED Kelemen, Fanni Dora UNSPECIFIED UNSPECIFIED UNSPECIFIED Wernli, Heini UNSPECIFIED orcid.org/0000-0001-9674-4837 UNSPECIFIED Gaertner, Miguel Angel UNSPECIFIED UNSPECIFIED UNSPECIFIED Reale, Marco UNSPECIFIED UNSPECIFIED UNSPECIFIED Sanchez-Gomez, Emilia UNSPECIFIED UNSPECIFIED UNSPECIFIED Lionello, Piero UNSPECIFIED UNSPECIFIED UNSPECIFIED Calmanti, Sandro UNSPECIFIED UNSPECIFIED UNSPECIFIED Podrascanin, Zorica UNSPECIFIED UNSPECIFIED UNSPECIFIED Somot, Samuel UNSPECIFIED UNSPECIFIED UNSPECIFIED Akhtar, Naveed UNSPECIFIED UNSPECIFIED UNSPECIFIED Romera, Raquel UNSPECIFIED UNSPECIFIED UNSPECIFIED Conte, Dario UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-177133
DOI:	10.1007/s00382-016-3398-7
Journal or Publication Title:	Clim. Dyn.
Volume:	51
Number:	3
Page Range:	S. 1023 - 1041
Date:	2018
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-0894
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEA-SURFACE TEMPERATURE; LIMITED-AREA MODEL; OBJECTIVE CLIMATOLOGY; HEAVY PRECIPITATION; TROPICAL CYCLONE; STORM TRACKS; SENSITIVITY; RESOLUTION; SIMULATIONS; PARAMETERIZATION Multiple languages Meteorology & Atmospheric Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17713