Climatic Zoning of West and Northwest of Iran with an Approach to Pavement Management of Roads

Since the early times the primary methods were used to make civil projects and especially transportation networks at present time which are designed as complex and exact methods, the climate and its properties have usually had direct interference for making tendency of structure as an important and vital parameter.Iran which has located in south west of Asia between the 25-42 degrees N latitude, had been the pass way of different climatic systems and masses whose results have been nothing but to produce various climatic regions in the country. Therefore, regarding the variety of regions in this land, there is exact necessity of great attention to climatic phenomena to manufacture and exploit transportation projects. In this study to zone the same climatic properties make attention to use the west and North West region of the country based on road pavement management necessary.This zoning has been exploited for a period of 15 years through 10 meteorology parameters from 35 synoptic stations in the regions. Firstly, the achieved data has been converted to the standard Z score, then selected by cluster analysis method, as an advanced statistical analysis to clustering the stations and finally zoning. The produced zoning was placed on the ground water layer and the final zoning was made in GIS environment. For the latest step the necessary suggestions were presented to appropriate road pavement management for each class.