Evaluation of interpolation methods to zoning drought in the plains Sari-Neka
Mahshid Karimi | Kaka Shahedi | Khabat Khosravi | Terifeh Edrisi
Drought is known as one of the environmental phenomena, and in fact an integral part of climate change that can occur in any geographic area (Mofidipoor et al., 2012 .( This phenomenon reveals its effects slowly and gradually, and its effects remain for long time and this is the feature that distinct it from other phenomena such as floods (Dai, 2010). Many indices have been offered to study drought such as Palmer index (Palmer, 1965), deciles method (Gibbs and Maher, 1967) and Standardized Precipitation Index (McKee et al., 1993). In general, the main objective of this study was to investigate the drought status in Sari-Neka plain using four indices including Rainfall Anomaly Index (RAI), Z-Score (Z), China Z-Index (CZI) and Percent of Normal precipitation Index (PNPI), as well as choosing the most suitable method among different interpolation methods and providing an appropriate model for drought zoning in the study area
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