عنوان مقاله [English]
نویسنده [English]چکیده [English]
Rotated factor analysis (RFA) is a powerful tool for climatic regionalization and delineation of rainy regions.Using this technique, we detect three main precipitation regions with different mechanisms in Iran. The first and the most important rainy region runs along Caspian Sea coasts. In this region rainfall mainly occurs during summer and fall. The second region coincides with Zagros Ranges. Winter is the most rainy season in this region. The third rainy region of the country covers northwestern and northeastern parts of Iran with more precipitation in spring.