Analyzing the spatial changes of the minimum temperature of the eastern basins of Iran and its relationship with Teleconnections patterns of sea surface temperature

Temperature changes are one of the most important issues of human life in recent years and it is known as the most important manifestation of climate change in the current century. The current study was conducted with the aim of investigating the minimum temperature changes in the eastern basins of Iran and its relationship with the sea surface temperature teleconnections patterns. In this regard, the monthly minimum temperature data of Mashhad, Sarakhs, Birjand, Zabol, Zahedan and Saravan stations and the data of 14 teleconnections patterns of sea surface temperature changes during the statistical period of 1987-2019 were used. At first, minimum temperature changes were investigated using new methods of spatial statistics and hot spot analysis. Then, the relationship between the studied variables was checked using Pearson's correlation test and linear regression. The results show that in all months, hot spots were observed in the southern and eastern areas of the basin and cold spots were observed in the northern and western areas of the basin. Hot and cold spots were observed in May more than other months and hot spots covered 31.87% of the study area and cold spots covered 32.58%. Correlation of the studied parameters also showed that in terms of time, the patterns of distant connection with the minimum temperature of January showed more correlation than other months. In contrast, there was no correlation in the months of June and November.