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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ftdoajarticles:oai:doaj.org/article:7a2bdb7ac2be4cd997acb4c9efbab86c 2023-05-15T17:32:23+02:00 NAO influence on extreme winter temperatures in Madrid (Spain) L. Prieto R. Garcia J. Diaz E. Hernandez T. del Teso 2002-12-01T00:00:00Z https://doi.org/10.5194/angeo-20-2077-2002 https://doaj.org/article/7a2bdb7ac2be4cd997acb4c9efbab86c EN eng Copernicus Publications https://www.ann-geophys.net/20/2077/2002/angeo-20-2077-2002.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-20-2077-2002 0992-7689 1432-0576 https://doaj.org/article/7a2bdb7ac2be4cd997acb4c9efbab86c Annales Geophysicae, Vol 20, Pp 2077-2085 (2002) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2002 ftdoajarticles https://doi.org/10.5194/angeo-20-2077-2002 2022-12-31T14:54:54Z 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 nonlinear 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. Key words. Meteorology and atmospheric dynamics (climatology; synoptic-scale meteorology; general or miscellaneous) Article in Journal/Newspaper North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Annales Geophysicae 20 12 2077 2085 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
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Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 L. Prieto R. Garcia J. Diaz E. Hernandez T. del Teso NAO influence on extreme winter temperatures in Madrid (Spain) |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
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 nonlinear 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. Key words. Meteorology and atmospheric dynamics (climatology; synoptic-scale meteorology; general or miscellaneous) |
format |
Article in Journal/Newspaper |
author |
L. Prieto R. Garcia J. Diaz E. Hernandez T. del Teso |
author_facet |
L. Prieto R. Garcia J. Diaz E. Hernandez T. del Teso |
author_sort |
L. Prieto |
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 |
Copernicus Publications |
publishDate |
2002 |
url |
https://doi.org/10.5194/angeo-20-2077-2002 https://doaj.org/article/7a2bdb7ac2be4cd997acb4c9efbab86c |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Annales Geophysicae, Vol 20, Pp 2077-2085 (2002) |
op_relation |
https://www.ann-geophys.net/20/2077/2002/angeo-20-2077-2002.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-20-2077-2002 0992-7689 1432-0576 https://doaj.org/article/7a2bdb7ac2be4cd997acb4c9efbab86c |
op_doi |
https://doi.org/10.5194/angeo-20-2077-2002 |
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Annales Geophysicae |
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20 |
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12 |
container_start_page |
2077 |
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2085 |
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1766130474826072064 |