Investigation of changes in temperature series in the eastern regions of Iran in order to study regional changes
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The aim of this study was to identify the temporal-spatial variations of temperature series in the eastern basin of Iran. Based on this attitude, the monthly statistics of average temperature, maximum temperature and minimum temperature of Sarakhs, Sahand, Birjand, Zabol, Zahedan and Saravan stations during the period of 1987-2019 were used. Data homogeneity was assessed by Chi-square test and data normality was assessed using Anderson-Darling test. For data with normal distribution, t-test and least squares method were used and for data with abnormal distribution, Mann-Kendall statistical-graphic test was used. The results showed that the average temperature in most months and most stations had an increasing trend. Mashhad, Birjand, Zabol and Zahedan have had an increasing trend in almost all months of the year. A decreasing trend was observed only in Zahedan station during December. The maximum temperature and especially the minimum temperature showed a lower trend and were out of trend in most months of the year. Time changes showed that the average temperature during the warm months of the year showed an increasing trend in more stations and in the cold months of the year less stations showed a trend. Of course, except for Mashhad, which has been a trend in most months of the year.
Language:
Persian
Published:
Quarterly of Geography (Regional Planing), Volume:11 Issue: 1, 2021
Pages:
125 to 141
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