a significant trendp -value <0.05
When the BA or the SPEI time series exhibit a significant trend (i.e., p -value <0.05, assessed with the Mann–Kendall test), we fit the model including the predictor time T .
When the BA or the SPEI time series exhibit a significant trend (i.e., p -value <0.05, assessed with the Mann–Kendall test), we fit the model including the predictor time T .