Authors: Kostas Philippopoulos Despina Deligiorgi Thaleia Mavrakou John Cheliotis
Publish Date: 2014/02/05
Volume: 124, Issue: 3-4, Pages: 195-204
Abstract
This study presents an analysis of the relationship between winter largescale circulation and surface meteorological conditions over Greece for the period 1979–2009 The adopted methodology involves the application of an automated atmospheric circulation classification scheme based on the selforganizing map approach The impact of each of the identified relevant 19 winter atmospheric circulation patterns on local meteorological condition is examined at seven sites by calculating the corresponding differences from the mean meteorological conditions The conditional transition probabilities of circulation patterns indicate the existence of increased 1day persistence especially for the anticyclonic and the pattern related to Genoa depressions Positive temperature anomalies are observed for the cyclonic patterns while negative anomalies are attributed to the effect of anticyclonic circulation
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