عنوان مقاله [English]
Temperature and temperature Changes is a manifestation of climate change and be remembered in the way in all theories of climate change. To reason the importance of this subject, this study is based on using non-parametric methods, to pay to review and understand the behavior average maximum temperature of Isfahan province during the period 1961-2010. After collecting statistics 16 synoptic and climatology stations in the province, first, homogeneity and normality of the data were tested by Kolmogorov- Simonov and Ryan Junior tests. Then due to abnormality of the data non-parametric, non-parametric tests were chosen for calculate and analyze trend. Accordingly, First done the Tau- Kendall and Denlis tests order to determine the exist of trend data and then for complete the studies and identity the increase or decrease trends in the time series was used of Mann - Kendall statistic test. Finally, type and time of changes data were identified and analyzed by Mann - Kendall graphics test. The results of the survey makes clear, According to Mann - Kendall and Denlis tests were without trend the Khurvbiabanak, Ardestan, Hamgin and Khansar stations and the tau-Kendall test the Khurvbiabanak , Ardestan Khansar stations during the period study. other stations have trend in a number of months to process . In the Natanz Badrod station there is indicating trend more of other stations. The Zoning maps drawn by the trends observed in the months of April to November have learned a greater area of the province. The increased station Najaf Abad, Isfahan, Badrud natanz and Chadegan more of other stations in study and enjoy declines the Meimeh and Natanz stations. The results the type and time changes show that occurred 50 percent reduction trends in June and 31/25 percent from the trends increase in March. Also have occurred all changes from type random during January, April, May, August, September and October.