The Effect of Teleconnection Patterns on Temperature Series in Zahedan City

Gandomkar, Amir; Mirhosseiny, Hamed; Afrous, Ali; Abbasi, Alireza

The Effect of Teleconnection Patterns on Temperature Series in Zahedan City

Document Type : Original Article

Authors

¹ Department of Geography, Najafabad Branch, Islamic Azad University, Najafabad, Iran

² , Department of Geography, Najafabad Branch, Islamic Azad University, Najafabad, Iran

³ Department of Water Engineering, Dezful Branch, Islamic Azad University, Dezful, Iran

Abstract

Introduction: Teleconnection is one of the features of the climate on a global scale. Teleconnection patterns represent large changes that occur in the pattern of atmospheric waves and tornadoes and affect the pattern of temperature, precipitation, the direction of showers and the position and intensity of tornadoes in large areas.
Objectives: The aim of this study was to investigate the effect of these patterns on temperature series in Zahedan.
Methodology: In this regard, minimum temperature, maximum and average temperature statistics of Zahedan station during the period of 1987-2019 on a monthly scale as well as standardized data of teleconnection patterns during the mentioned period, were used. Pearson correlation and multivariate regression tests were used in this regard.
Geographical Context: The geographical territory studied in this research is the city of Zahedan.
Results and Discussion: The results indicate that there is a significant relationship between teleconnection patterns and the average temperature of Zahedan. Among these, NTA, AMO and TNA patterns had the greatest effect on the average temperature of Zahedan. The correlations were direct, and only the NAO pattern was inversely correlated. The maximum and minimum temperatures of Zahedan also showed the highest correlation with the patterns located in the North Atlas. The maximum temperatures in March and October and the minimum temperatures in March and August had the highest correlation with the North Atlantic patterns.
Conclusion: In general, it can be said that the patterns located in the North Atlas, more than other patterns, have affected the temperature series of Zahedan and especially its average temperature.

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