Abstract:

Turkey is located in the Mediterranean Basin, which is most affected by climate change. Climate change is manifested in many parts of the world as an increase in average temperature occurred. In the study, city and rural station pairs were created for 42 meteorological stations in Turkey between 1970 and 2012 periods .The changes in the climatic indices of these station pairs have been examined. RClimDex program and Mann Kendall trend analysis technique were used for this investigation.  RClimDex program generates 27 core climate indices. Information derived from indices not only includes how average values change over time but also shows how the statistical distribution of data changes over time. Results also provide crucial information about the trends of the extremes. This study focused on 10 temperature indices. It was observed that selected stations pair’s climate indices differences significantly increased or decreased and this increment or decrement was more pronounced in urban stations compared to rural stations. Based on Mann Kendall trend analysis, while differences in station pair’s climate indices such as tropical, days, summer days, warm nights, warm days, minimum of minimum temperatures and maximum of minimum temperatures indices differences  had increasing trend, only differences of cold spell duration indicator trend showed a decreasing trend. Most of the trends were found to be statistically significant at a level of 5%.

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