Abstract:

Through the introduction of multifractal analysis theory and using the multiplication cascade model, we analyze the multifractal characteristic of the meteorological drought by choosing standardized precipitation index as the meteorological drought index, according to the monthly precipitation data of six meteorological stations in western Jilin Province from January 1957 to October 2010. The results show that the occurrences of meteorological drought in western Jilin Province have multifractal characteristic on the time scales, but the multifractal intensity was different in stations, which showed a certain spatial difference. The multifractal characteristics increase with the order: Changling

Key words: western of Jilin Province, drought, standardized precipitation index, multifractal characteristic