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Figure 1. Number of years of available river discharge observations in the 1979-2021 reanalysis period.
The generic GloFAS v4.0 model performance is measured by the modified Kling Gupta efficiency in Figure 2. High skill (above 0.7) is shown over much of the higher latitude areas and also some southest Asian and central south American areas. The lowest KGE, including even some catchments with no skill at all (below -0.41), are spread across some tropical areas, often in central southern USA and Mexico and some areas in Africa, often in the drier climate.
Figure 2. KGE of the GloFAS v4 simulation.
The KGE's component scores highlight that much of the lower KGE skill comes from the often high and mainly positive bias, and larger variability errors. The correlation is more homogeneous, even though many of the low KGE areas also show low correlation, with exceptions, such as the
Figure 23. Bias and variability ratio and Pearson correlation of the GloFAS v4 simulation.
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