Akademik Veri Yönetim Sistemi
2ND INTERNATIONAL EURASIAN CONFERENCE ONSCIENCE, ENGINEERING AND TECHNOLOGY, Gaziantep, Türkiye, 7 - 09 Ekim 2020, ss.93-94
Homogeneity tests are important to investigate the changes in climate data to increase the reliability and quality
of the data used in hydrological and climate studies. In this study, four absolute homogeneity tests were performed
in order to identify the discrepancies and break points in the annual average temperatures of 16 stations between
the years 1966-2017. Standard Normal Homogeneity Test (SNHT), Pettitt Test (PT), Buishand Range Test (BRT),
and Von Neumann Ratio Test (VNRT) were evaluated at the 5% significance level. These tests show that none of
the stations are homogeneous. However, when the reason behind the inhomogeneity is investigated, the fact that
1994 is the break point in neigbour stations shows us that the reason for the inhomogeneity (except Erzurum airport
) is related to the regional climate change. As a result, break points at 15 stations can be said to emerge climate
change caused by atmospheric oscillations such as North Atlantic Oscillation (NAO) and Southern Oscillation
(SO). Furthermore, in order to correct the inhomogeneity in Erzurum airport, the discrepancies were adjusted
according to the neigbouring station's data by using the double mass curve method.