Fourteenth International Conference on Climate Change: Impacts & Responses

Abstract

One of the consequences of the heat islands is climate change of big cities in relation to the surrounding areas, which is one of the consequences of rising temperatures. This can make a difference in the long-term climate change process. It is important to identify the presence or absence of trends in long-term atmospheric elements in planning. In this study, long-term statistics of Rasht Synoptic Station from 1956 to 2017 were used. Parameters studied include mean temperature, mean minimum and maximum temperature using time series component and Spearman test as well as linear regression to find trends in temperature elements in Rasht. The results show that among the three temperature parameters, the mean minimum temperature had the highest trend of monthly and annual changes. April, May, June, July, August, October, December, as well as March had an increasing trend at 99% confidence intervals in the mean minimum temperature. In addition, the annual trend of minimum temperature is also significant at 99% confidence level. March and August have seen an upward trend in average maximum temperatures and other months show no trend. Meanwhile, the average temperature also lacks monthly and yearly trends.