Theoretical and Applied Climatology

, Volume 130, Issue 1–2, pp 217–232 | Cite as

Temporal and spatial variability of rainfall over Greece

  • Y. Markonis
  • S. C. Batelis
  • Y. Dimakos
  • E. Moschou
  • D. Koutsoyiannis
Original Paper


Recent studies have showed that there is a significant decrease in rainfall over Greece during the last half of the pervious century, following an overall decrease of the precipitation at the eastern Mediterranean. However, during the last decade an increase in rainfall was observed in most regions of the country, contrary to the general circulation climate models forecasts. An updated high-resolution dataset of monthly sums and annual daily maxima records derived from 136 stations during the period 1940–2012 allowed us to present some new evidence for the observed change and its statistical significance. The statistical framework used to determine the significance of the slopes in annual rain was not limited to the time independency assumption (Mann-Kendall test), but we also investigated the effect of short- and long-term persistence through Monte Carlo simulation. Our findings show that (a) change occurs in different scales; most regions show a decline since 1950, an increase since 1980 and remain stable during the last 15 years; (b) the significance of the observed decline is highly dependent to the statistical assumptions used; there are indications that the Mann-Kendall test may be the least suitable method; and (c) change in time is strongly linked with the change in space; for scales below 40 years, relatively close regions may develop even opposite trends, while in larger scales change is more uniform.


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Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  • Y. Markonis
    • 1
  • S. C. Batelis
    • 1
  • Y. Dimakos
    • 1
  • E. Moschou
    • 1
  • D. Koutsoyiannis
    • 1
  1. 1.Department of Water Resources and Environmental Engineering, Faculty of Civil EngineeringNational Technical University of AthensAthensGreece

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