Agricultural And Meteorological Softwares Agricultural And Meterological Softwares

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How can I calculate standard precipitation index (SPI)?

Standard precipitation index formula is very simple but due to precipitation data follow gamma distribution, you should to use gamma distribution. Gamma distribution is difficult but you can use MDM, RDIT, or DMAP for calculating standard precipitation index (SPI), these softwares is very simple and user-friendly.

Name: Jaffar Mirzadeh