نواحي اقليمي ايران

Climatic Regions of Iran

A factor analysis of 27 annual climatic variables detects six main climatic factors in Iran. These factors are Thermal factor, humidity and cloudiness factor, precipitation factor, wind and dust factors, and Thunder factor, In southern coasts of Caspian Sea and Zagros range precipitation is more significant. In Zagros sunshine play a secondary major role in determining climatic regions.Throughout the eastern border of the country wind and dust is the most visible feature. Thunder is very active in the southeastern and northwestern corners of Iran. Based on these six climatic factors, Iran could be divided into 15 different climatic regions. Spatial alignment of these regions reveals the importance of elevation and distance to sea as the major background of climate regionalization in Iran.