Climatic Zoning of Qazvin Province

The Ghazvin Province is located in northwest of Iran. Because of the mountainous areas in the northern and southwestern parts of the province, and also of two basins in north and south, we observe various climates in this region. To understand the climate of Ghazvin province and desirable climatic zoning, we have considered the topography, height effect on atmospheric parameters and the variability of some climatic factors. In this paper, the spatial changes of some variables such as temperature, precipitation, relative humidity and evaporation over the Ghazvin region, have been studied and presented by GIS maps. Results showed that the most of Ghazvin province region has cold arid and semi arid climates. Climate variations in the province are function of height too. As height increases, temperature is decreased and precipitation is enhanced.