NAO influence on extreme winter temperatures in Madrid (Spain)
Extremely cold days (ECDs), with minimum temperatures lower than -4.6°C, have been analysed for Madrid. This threshold corresponds to the 5th percentile of the period 1963-1999. Adopting a case analysis approach, five synoptic patterns have been identified that produce these extremely low temperatur...
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Language: | English |
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European Geophysical Society
2002
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ftunivcmadrid:oai:www.ucm.es:34825 2023-05-15T17:31:53+02:00 NAO influence on extreme winter temperatures in Madrid (Spain) Prieto, L. García Herrera, Ricardo Díaz, J. Hernández Martín, Emiliano Teso, T. del 2002-12 application/pdf https://eprints.ucm.es/id/eprint/34825/ https://eprints.ucm.es/id/eprint/34825/1/garciaherrera79libre.pdf https://doi.org/10.5194/angeo-20-2077-2002 en eng European Geophysical Society https://eprints.ucm.es/id/eprint/34825/1/garciaherrera79libre.pdf info:eu-repo/semantics/openAccess Astrofísica Astronomía info:eu-repo/semantics/article PeerReviewed 2002 ftunivcmadrid https://doi.org/10.5194/angeo-20-2077-2002 2022-05-12T20:00:49Z Extremely cold days (ECDs), with minimum temperatures lower than -4.6°C, have been analysed for Madrid. This threshold corresponds to the 5th percentile of the period 1963-1999. Adopting a case analysis approach, five synoptic patterns have been identified that produce these extremely low temperatures. Three of them are associated with cold air flows over the Iberian Peninsula, and the other two with a lack of significant circulation over the region. A non-linear association with the North Atlantic Oscillation (NAO) has been identified using log-linear models. The NAO positive phase leads to an increase in the winter frequency of those synoptic patterns associated with stagnant air flow over Iberia, while those characterised by cold, northern flows do not appear to be similarly influenced. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Universidad Complutense de Madrid (UCM): E-Prints Complutense Annales Geophysicae 20 12 2077 2085 |
institution |
Open Polar |
collection |
Universidad Complutense de Madrid (UCM): E-Prints Complutense |
op_collection_id |
ftunivcmadrid |
language |
English |
topic |
Astrofísica Astronomía |
spellingShingle |
Astrofísica Astronomía Prieto, L. García Herrera, Ricardo Díaz, J. Hernández Martín, Emiliano Teso, T. del NAO influence on extreme winter temperatures in Madrid (Spain) |
topic_facet |
Astrofísica Astronomía |
description |
Extremely cold days (ECDs), with minimum temperatures lower than -4.6°C, have been analysed for Madrid. This threshold corresponds to the 5th percentile of the period 1963-1999. Adopting a case analysis approach, five synoptic patterns have been identified that produce these extremely low temperatures. Three of them are associated with cold air flows over the Iberian Peninsula, and the other two with a lack of significant circulation over the region. A non-linear association with the North Atlantic Oscillation (NAO) has been identified using log-linear models. The NAO positive phase leads to an increase in the winter frequency of those synoptic patterns associated with stagnant air flow over Iberia, while those characterised by cold, northern flows do not appear to be similarly influenced. |
format |
Article in Journal/Newspaper |
author |
Prieto, L. García Herrera, Ricardo Díaz, J. Hernández Martín, Emiliano Teso, T. del |
author_facet |
Prieto, L. García Herrera, Ricardo Díaz, J. Hernández Martín, Emiliano Teso, T. del |
author_sort |
Prieto, L. |
title |
NAO influence on extreme winter temperatures in Madrid (Spain) |
title_short |
NAO influence on extreme winter temperatures in Madrid (Spain) |
title_full |
NAO influence on extreme winter temperatures in Madrid (Spain) |
title_fullStr |
NAO influence on extreme winter temperatures in Madrid (Spain) |
title_full_unstemmed |
NAO influence on extreme winter temperatures in Madrid (Spain) |
title_sort |
nao influence on extreme winter temperatures in madrid (spain) |
publisher |
European Geophysical Society |
publishDate |
2002 |
url |
https://eprints.ucm.es/id/eprint/34825/ https://eprints.ucm.es/id/eprint/34825/1/garciaherrera79libre.pdf https://doi.org/10.5194/angeo-20-2077-2002 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://eprints.ucm.es/id/eprint/34825/1/garciaherrera79libre.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-20-2077-2002 |
container_title |
Annales Geophysicae |
container_volume |
20 |
container_issue |
12 |
container_start_page |
2077 |
op_container_end_page |
2085 |
_version_ |
1766129738175217664 |