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| Titel |
Synoptic conditions leading to extremely high temperatures in Madrid |
| VerfasserIn |
R. García, L. Prieto, J. Díaz, E. Hernández, T. Teso |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 20, no. 2 ; Nr. 20, no. 2, S.237-245 |
| Datensatznummer |
250014359
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| Publikation (Nr.) |
 copernicus.org/angeo-20-237-2002.pdf |
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| Zusammenfassung |
Extremely hot days (EHD)
in Madrid have been analysed to determine the synoptic patterns that produce
EHDs during the period of 1955–1998. An EHD is defined as a day with maximum
temperature higher than 36.5°C, a value which is the threshold for the intense
effects on mortatility and it coincides with the 95 percentile of the series.
Two different situations have been detected as being responsible for an EHD
occurrence, one more dynamical, produced by southern fluxes, and another
associated with a stagnation situation over Iberia of a longer duration. Both
account for 92% of the total number of days, thus providing an efficient
classification framework. A circulation index has been derived to characterise
and forecast an EHD occurrence. This paper shows that EHD occur in Madrid
during short duration events, and no long heat waves, like those recorded in
other cities, are present. Additionally, no clear pattern can be detected in
the EHD frequency; the occurrence is tied to changes in the summer location of
the Azores high.
Key words. Meteorology and
atmospheric dynamics (Climatology; synoptic-scale meteorology; general or
miscellaneous) |
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