Modulación multidecadal de la relación entre El Niño y la precipitación en primavera sobre el área Euro-Mediterránea
- Jorge López Parages 1
- Belén Rodríguez de Fonseca 1
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1
Universidad Complutense de Madrid
info
- Concepción Rodríguez Puebla (coord.)
- Antonio Ceballos Barbancho (coord.)
- Nube González Reviriego (coord.)
- Enrique Morán Tejeda (coord.)
- Ascensión Hernández Encinas (coord.)
Publisher: Asociación Española de Climatología
ISBN: 978-84-695-4331-3
Year of publication: 2012
Pages: 469-478
Congress: Asociación Española de Climatología. Congreso (8. 2012. Salamanca)
Type: Conference paper
Abstract
El Niño influence on the winter Euro-Mediterranean Rainfall (EMedR) has changed along the 20th century, and the reasons for this lack of stationarity, which represents an important issue in the climate change context, are still unclear. Here, the causes of this changing relationship are studied at interannual timescales. To this aim the EMedR is analyzed using observations from 1901 to 2007. Results confirm the lack of stationarity of the first and second EMedR mode. The results show how the teleconnection of the leading mode with El Niño appear modulated by multidecadal oscillations of the anomalous Sea Surface Temperature (SST) over the Atlantic basins. Anthropogenic global warming could influence the teleconnection for the second mode. The results of this study have important implications in seasonal and decadal predictability, but they also represent a step forward in the understanding of the role of changes in the ocean mean state on the interannual teleconnections.