Advances in Science and Research www.adv-sci-res.net 1992-0628 1992-0636 2 7th EMS Annual Meeting and 8th European Conference on Applications of Meteorology 2007 2008 10.5194/asr-2-99-2008 http://www.adv-sci-res.net/2/99/2008/ http://www.adv-sci-res.net/2/99/2008/asr-2-99-2008.html http://www.adv-sci-res.net/2/99/2008/asr-2-99-2008.pdf 99 105 2008-06-04 Torrential rainfall in northeast of the Iberian Peninsula: synoptic patterns and WeMO influence J. Martin-Vide jmartinvide@ub.edu A. Sanchez-Lorenzo J. A. Lopez-Bustins M. J. Cordobilla A. Garcia-Manuel J. M. Raso Group of Climatology, University of Barcelona, Barcelona, Spain Barcelona Regional, Barcelona, Spain This study presents a catalogue of synoptic patterns of torrential rainfall in northeast of the Iberian Peninsula (IP). These circulation patterns were obtained by applying a T-mode Principal Component Analysis (PCA) to a daily data grid (NCEP/NCAR reanalysis) at sea level pressure (SLP). 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