عنوان مقاله [English]
The main objective of Climate Zoning is to obtain a simple and also comprehensive framework of climatic elements in a region. Classic or traditional methods that have been pervasive in the past decades are not able to explain the reality of the climate of a geographic area. With the advancement of science and appearance of computer on the field of science studies, as well as the emergence of geographic information systems, applying multivariate methods (factor analysis, principal component analysis, cluster analysis, etc.) has been rampantly used on the zoning of climatic regions in the last two decades. These methods are comprehensive and more accurate than classical methods and also are easily applicable.
After reviewing the principal components analysis on 48 climatic elements, five components that have the most significant role in Kohgiluyeh and Boyer-Ahmad Province, had been identified. These factors, in order of importance, are: temperature component, cloud-wind component, moisture component, wind component, and dust component. Between all the climate elements, temperature and cloud-wind factors, with 61% and 19% of total variance respectively, have the major role in determining the climate diversity of the province. So that in the western half of the province, due to lower elevation and proximity to the hot deserts and lack of rainfall, the role of temperature is highlighted. While by moving to the eastern half of the province, the rainfall is increasing significantly. Regional classification of province’s climate from two to eight climate zones, can be considered and help in development decisions.