Synoptic Analysis of Drought in Hamadan Province

Today, considering the many problems that drought has caused, the need to conduct studies to anticipate and counteract it seems critical. A careful study of this phenomenon requires comprehensive and specialized studies that will include all the factors that affect it. In this paper, the role of synoptic factors that have created dry and wet periods in Hamadan province has been studied and synoptic maps are used to predict drought. In this research, the intensity of drought was determined using Gibbs and Moher method and rainfall indices and it was found that there was a good agreement between ICC coefficients and monthly intensities of drought occurred in Hamadan province within 500-850 HPA range.