2026-06-28T20:31:10Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/598402024-08-26T15:45:57Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Prieto, L.
author
García Herrera, Ricardo Francisco
author
Díaz, J.
author
Hernández Martín, Emiliano
author
Teso, T. del
2023-06-20T20:12:33Z
2023-06-20T20:12:33Z
2002-12
0992-7689
10.5194/angeo-20-2077-2002
https://hdl.handle.net/20.500.14352/59840
http://dx.doi.org/10.5194/angeo-20-2077-2002
http://www.ann-geophys.net/
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.
eng
NAO influence on extreme winter temperatures in Madrid (Spain)
journal article
URL
https://docta.ucm.es/bitstreams/734f53b0-cf7a-40bf-8426-68a9f39d77ed/download
File
MD5
c7d9a797e131dec81b8e0648cb8a04ad
526266
application/pdf
garciaherrera79libre.pdf
URL
https://docta.ucm.es/bitstreams/0b5bdb80-dd82-48fc-aa4d-9477d8ef3f44/download
File
MD5
df28447177ccbb416abfed62fe4f0b6a
32578
text/plain
garciaherrera79libre.pdf.txt