SPEI returns a time step equal to the input variable integrationtime. Although not wrong, that does not agree with the spirit of SPEI. The time step of the returned SPEI time-series should be the same as the meteorological time-series that goes as input. The integration should then occur as a sliding window.
SPEI returns a time step equal to the input variable
integrationtime. Although not wrong, that does not agree with the spirit of SPEI. The time step of the returned SPEI time-series should be the same as the meteorological time-series that goes as input. The integration should then occur as a sliding window.