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Investigation of the Changing Trend of Temperature in Hamedan (Nojeh Station)

Authors:
[ Maryangz ] -
[ Borhani ] -

Abstract:

Climate Change is a general term that distributed climate discontinuity. For studying &e temperature change in Hamedan we analyzed the temperature oscillation during fifty years period (1952-2001). After analysis we found a sudden decrease in minimum temperature and r sudden increase in maximum temperature. According to M-K test there is a considerable change in minimum, maximum and T a n temperature. For example there is a decrease trend which started in 1962 and an rzease trend in 1992 which continues up to now. The spring temperature is exempted from this rule, because the beginning ofthe zmiing period is in 1992. In autumn, minimum temperature decrease period is started at 1959 a d continues up to 1974. Consequently 1992 is the beginning year of increase trend in h e d a n . And the amount of mean increasing is about 0.55 (c') that in minimum the increasing amount is 0.79 (c') and in maximum is 0.30 (c').

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