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| Titel |
Springtime connections between the large-scale sea-level pressure field and gust wind speed over Iberia and the Balearics |
| VerfasserIn |
M. L. Martin, F. Valero, A. Pascual, A. Morata, M. Y. Luna |
| 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 ; 11, no. 1 ; Nr. 11, no. 1 (2011-01-21), S.191-203 |
| Datensatznummer |
250009047
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| Publikation (Nr.) |
 copernicus.org/nhess-11-191-2011.pdf |
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| Zusammenfassung |
| This paper investigates, by means of Singular Value Decomposition analysis,
the springtime relationships between the mean sea-level pressure field over
the North Atlantic and the regional wind gusts over the Iberian Peninsula,
identifying the main atmospheric circulation patterns linked to gust wind
speed anomaly configurations. The statistical significance of the obtained
modes is investigated by means of Monte Carlo approach. The analysis
highlighted that the covariability is dominated by two main large-scale
features of the atmospheric circulation over the North Atlantic. The first
mode relates to Iberian gust wind speeds to the Scandinavian pattern (SCAND),
linking the large-scale pattern to above-normal wind gusts. The second
covariability mode, associated with the North Atlantic Oscillation (NAO)
pattern, correlates with maximum wind speeds over Iberia. An enhanced spring
NAO pattern is related to positive (negative) wind gust correlations over
northern (southern) Iberia. To find true relationships between large-scale
atmospheric field and the gust wind speeds, composite maps were built up to
give an average atmospheric circulation associated with coherent wind gust
variability over Iberia. |
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