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| Titel |
Towards a climatology of sensitivities of Mediterranean high impact weather - first approach |
| VerfasserIn |
V. Homar, A. Jansa, J. Campins, C. Ramis |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 7th Plinius Conference on Mediterranean Storms (2005) ; Nr. 7 (2006-04-10), S.259-267 |
| Datensatznummer |
250004302
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| Publikation (Nr.) |
 copernicus.org/adgeo-7-259-2006.pdf |
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| Zusammenfassung |
| During recent years, great interest has grown within the operational weather
community on the adaptable component of observational networks. Decisions
regarding where to deploy new observations of special value under threatening
weather, or regarding permanent changes in observational strategies need
support from sensitivity studies that determine areas where the addition of
observations would optimally improve the skill of numerical predictions.
Within the context of the MEDEX project (http://medex.inm.uib.es), the
sensitivities of a collection of severe weather episodes in the Mediterranean
have been computed using the MM5 Adjoint Modeling system. Various approaches
are explored trying to summarize the results for the diversity of cases that
produce high impact weather (HIW; mainly heavy rain and strong winds) in the
Mediterranean region. A first attempt uses an objective classification of the
trajectories of the most intense cyclone types from the ERA-40 reanalyses.
Sensitivities are then computed for each group of frequent trajectories,
providing a prototype sensitivity field for each of the most frequent intense cyclones in the Mediterranean.
However, a large portion of HIW
episodes in the Mediterranean are not linked to significantly intense cyclones within the climatology. Consequently, a
subjective classification of HIW events is also performed and the sensitivity fields for an example case is shown to complete the study.
Although the sensitive areas for Mediterranean HIW are not particularly confined, it is remarkable how poorly sampled areas by the regular
observing networks such as North Africa and the eastern North-Atlantic are highlighted in the results. |
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