The extent of the present study comprises the Tuz gölü-Konya endorheic basins located in the Middle Anatolia Region. The present study is aimed to perform trend analysis of average temperature,evaporation and total precipitation of eight meteorological stations (Aksaray, Beyşehir, Cihanbeyli, Ereğli, Karaman, K.H.Limanı, Kulu, Seydişehir) with more than 30 years of observation (1970-2018) and flow values of four flow observation stations (Çarşamba deresi, İbrala, İnsuyu ve Peçenek) during the period (1970-2015) in the basin. Besides, the aim of the study is also to analyze the summer seasonal and months trends of these data by considering the monthly measured average temperature, evaporation and precipitation data of meteorological and flow observation stations observed over many years across the basin. The topic has been selected because of the great significance of endorheic basins with the idea that changes in climate parameters are easier to notice in such areas. In addition, the study will also contribute to the national and international literature on climate change studies with another example from Turkey. The research method is based on the Mann-Kendall Test and Spearman's Rho Test. According to the results obtained, a significant increase or decrease in precipitation was not observed while a significant increases were observed in average temperatures across the basin in general (summer seasonal). In terms of evaporation trend, a significant increase in flow was observed in Beyşehir, Karaman and Konya airport (summer seasonal) stations and a substantial decrease in Eregli and Seydisehir stations in summer period while no trend was found in other stations. In terms of flow trend, a significant decrease in flow was observed in Ibrala and Pecenek station while no trend was found in other stations. It is understood that the temperature increases seen throughout the basin do not have a significant effect on precipitation, evaporation and flow in summer seasonal.
Climate, trend, temperature, evaporation, precipitation and flow