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| Titel |
Verification of operational weather forecasts from the POSEIDON system across the Eastern Mediterranean |
| VerfasserIn |
A. Papadopoulos, P. Katsafados |
| 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 ; 9, no. 4 ; Nr. 9, no. 4 (2009-07-31), S.1299-1306 |
| Datensatznummer |
250006893
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| Publikation (Nr.) |
 copernicus.org/nhess-9-1299-2009.pdf |
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| Zusammenfassung |
| The POSEIDON weather forecasting system became operational at the Hellenic
Centre for Marine Research (HCMR) in October 1999. The system with its
nesting capability provided 72-h forecasts in two different model
domains, i.e. 25- and 10-km grid spacing. The lower-resolution domain
covered an extended area that included most of Europe, Mediterranean Sea and
N. Africa, while the higher resolution domain focused on the Eastern
Mediterranean. A major upgrade of the system was recently implemented in the
framework of the POSEIDON-II project (2005–2008). The aim was to enhance the
forecasting skill of the system through improved model parameterization
schemes and advanced numerical techniques for assimilating available
observations to produce high resolution analysis fields. The configuration
of the new system is applied on a horizontal resolution of 1/20°×1/20°
(~5 km) covering the Mediterranean basin, Black Sea and
part of North Atlantic providing up to 5-day forecasts. This paper reviews
and compares the current with the previous weather forecasting systems at
HCMR presenting quantitative verification statistics from the
pre-operational period (from mid-November 2007 to October 2008). The
statistics are based on verification against surface observations from the
World Meteorological Organization (WMO) network across the Eastern
Mediterranean region. The results indicate that the use of the new system
can significantly improve the weather forecasts. |
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