مرکز منطقه ای اطلاع رساني علوم و فناوري - Spatial Distribution of Annual and Seasonal Rainfall Variability over Turkey

Abstract :

Aim of this study ist to present spatial distributions of annual and seasonal rainfall variability over Turkey. For this aim monthly rainfall data during the period of 1950 – 2009 from 64 stations were used. Coefficients of variations for the stations have been computed. The coefficients of variation decrease southern part of the country with a seasonal rainfall regime to the north where uniform rainfall regimes dominate. Prepared rainfall variation maps clearly show that highest annual and seasonal variations are over southern regions, lowest variations are over eastern Black Sea Coasts. Most of the area of Turkey have less than 25 per cent. But areas with coffiecient over 25 per cent such as Mediterranean and Southeastern Anatolia regions have more frequent and severe droughts because of the low reliability of the normal rainfall. Low values indicate uniform rainy pattern such as Black Sea Region.