Sensitivity of SPI to distribution functions and correlation between its values at different time scales in Central Africa
GM Guenang, MAJ Komkoua, MW Pokam… - Earth Systems and …, 2019 - Springer
This paper studies sensitivity of Standardized Precipitation Index (SPI) to statistical
distribution functions used in SPI computation procedure, in order to find out which are more
appropriate and to assess SPI shift if using inappropriate distribution functions. Results may
explain one of the reasons why spatial SPI computed with unique distribution function as
usually, sometimes does not give better drought description. Central Africa is chosen as the
study area because of its importance in climate change perspective and the necessity to use …
distribution functions used in SPI computation procedure, in order to find out which are more
appropriate and to assess SPI shift if using inappropriate distribution functions. Results may
explain one of the reasons why spatial SPI computed with unique distribution function as
usually, sometimes does not give better drought description. Central Africa is chosen as the
study area because of its importance in climate change perspective and the necessity to use …
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