Trend Analysıs of Snow Cover and Snowfall Days in the Eastern Anatolıa Regıon (1970-2020)

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In the context of global climate change, the type of precipitation is as important as the amount of precipitation in a region. In particular, precipitation in the form of snow is vital in many respects, especially the availability of water supply and the regularity of river regimes. Most snowfall is seen in the Eastern Anatolia Region in Turkey and some of the strongest rivers are also located in this region. The aim of the study is to test whether there is a trend in the snow cover and snowfall days in long times (1970-2020) in the Eastern Anatolia Region and whether there is a relationship between snowy days and snow-covered days by using the Pearson Correlation Method. In addition to meteorological parameters which are taken from MGM belonging to Malatya, Muş, Tunceli, Van, Elazığ, Erzincan, Bingöl, Erzurum, Bitlis, Hakkâri, Ağrı, Iğdır, Kars, Ardahan meteorological stations, the Mann-Kendall Trend Analysis method and Pearson Correlation Method were used. As a result; It is seen that all of the changes in the number of days with annual snow cover tend to decrease and a large part of them are statistically significant at 95% confidence interval. It has been determined that the changes in the snowfall days are varied according to the snow cover days. Because there are increases as well as decreases in the snowfall days. It is an important finding that especially Kars and Muş stations have a significant increase in the snow cover days. It is also noteworthy that significant decreases are seen on a line starting from Malatya to Muş. In addition, insignificant trends of increase and decrease are observed in other provinces. It has been determined that there is a statistically significant, moderate and positive relationship between snow cover days and snowfall days in most of the stations and periods.

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Eastern Anatolia Region , Snowfall , Trend Analysis

eastern geographical review

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eastern geographical review