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Title

Links between teleconnection patterns and precipitation in Spain

AuthorsRíos Cornejo, David; Penas, Ángel ; Álvarez-Esteban, R.; del Río, Sara
KeywordsSpain
Teleconnection patterns
Precipitation
Climate regionalisation
Correlation analysis
Issue Date2015
PublisherElsevier
CitationAtmospheric Research 156: 14- 28 (2015)
AbstractThis paper describes the relationships between rainfall in Spain (1961-2010) and four teleconnection patterns on three time scales (monthly, seasonal and annual) using data from 144 meteorological stations. Spearman's test was used to carry out partial correlations, and spatial distribution maps of the correlation coefficients were generated with kriging method. We regionalise the study area into homogeneous areas containing weather stations with a similar precipitation response to the patterns. The links between precipitation and the NAO, AO and EA are generally positive in the east and negative in the west of Spain, whereas WeMO correlates positively in the north and negatively in the rest.As a general result, the winter months and winter season show the highest percentage of weather stations with statistically significant correlations. Spearman coefficients of up to 0.62 were found for the NAO, AO and EA. WeMO strongly correlates (values up to 0.55) from October to April.Five areas have been defined: centre/southwest, northwest, north, northeast, and southeast. The mode which best explains rainfall in the two western areas is the NAO; in the north, the WeMO exerts a notable influence; EA correlates better with precipitation in the two eastern zones, especially in spring, autumn and part of winter. They are better controllers of rainfall in these areas than in the whole of the study area.© 2014 Elsevier B.V.
Description7 figuras, 3 tablas.
Publisher version (URL)http://dx.doi.org/10.1016/j.atmosres.2014.12.012
URIhttp://hdl.handle.net/10261/112535
DOI10.1016/j.atmosres.2014.12.012
ISSN0169-8095
Appears in Collections:(IGM) Artículos
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