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When comparing the v4 performance with the previous v3 model, we provide 3 flavours of the comparison, one which uses all possible stations, regardless of the lake and reservoir impact and two which includes only points that has maximum small reservoir or lake influence. One of these two is for the calibration comparison, i.e. with points used in both v4 and v3 calibration, while the other is with only points that were used in neither of the calibrations.
KGE
ddfdfThe new higher resolution v4 GloFAS outperforms the earlier v3 almost everywhere. Exceptions are mainly in eastern USA, Amazonia and western Europe (Figure 7).
Figure 7. KGE error difference maps between GloFAS v4 and v3 simulations (top row) and cumulative distributions for both v4 and v3. Using all all points (1st column), using only calibration points for both models without larger reservoir or lake influence (2nd column) and non-calibration points for both models without larger reservoir or lake influence (3rd column).
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