In this study, the spatial and temporal variability of the mean annual rainintensity in Greece are examined during a 41-year period (1962–2002). Themeteorological datasets concern monthly rain amounts (mm) and the respectivemonthly durations (h) recorded at thirty two meteorological stations of theHellenic National Meteorological Service, which are uniformly distributed onGreek territory, in order to calculate the mean monthly rain intensity. Allthe rain time series used in the analysis were tested by the application ofthe short-cut Bartlett test of homogeneity. The spatial distribution of themean annual rain intensity is studied using the Kriging interpolationmethod, while the temporal variability, concerning the mean annual rainintensity trends along with their significance (Mann-Kendall test), isanalysed.The findings of the analysis show that statistically significant negativetrends (95% confidence level) appear mainly in the west sub-regions ofGreece, while statistically significant positive trends (95% confidencelevel) appear in the wider area of Athens and the complex of CycladesIslands. Further analysis concerning the seasonal rain intensity is needed,because there are different seasonal patterns, taking into account that,convective rain in Greece occurs mainly within the summer season.
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