Comparing climatic indices; Mahoney, Evans, Biker, effective temperature (ET) and Givoni in Rasht city

Abstract

The present research study and compare 5 well-known climatic indices inRasht city. For studying these five indices a 15-year statistical climaticperiod (1995-2009) has been used. The aim of this paper is to assess that howmuch the results of each of these indices are close to each other that are theresults provided by the indices are the same. The present paper tries to answerthis question:”how much the results of the climatic indices are similar andclose to each other and how much these results differ from each other?” For thesethree Mahoney, Evans and Givoni indices architectural guidelinesand principles have been as well provided and we hope that they will be useful.The research method used in this paper is qualitative method with an appliedapproach. The analyses indicate that regarding the coldness of the January, February,March and December months all the indices share common aspects. Also, there isno different between the cold, warm or temperate weather of the days of themonths in the Mahoney, Evans and effective temperature indices. However, in therest of the days and nights of the indices some differences in the results areseen. Therefore, we can conclude that in Rasht city the results of the threeMahoney, Evans and effective temperature indices results are so much close toeach other; however, there is a different in the results of Givoni and Biker results.On an average basis we can say that in this city three months of the year theweather is moderate and therefore, a comfortable condition exists and for 3months the weather is warm and for 6 months is cold. Based on architectural guidelinesin these 6 months that the weather of this city is cold the buildings requireInsulation and heating devices. In these months the air penetration through theseams of the windows and weak joints of the buildings should be prevents andthe heat of the sun should be used. In the other 6 months of the year thebuildings are required to make use of the air circulation, while in four ofthese months the air circulation is necessary.