Fig. 4
From: Accurate and efficient AI-assisted paradigm for adding granularity to ERA5 precipitation reanalysis
The reliability diagrams are displayed for the average of the 5 L1-folds of the cross validation for assessing both ‘calibration’ (left column) and ‘regionalization’ (right column). Different rows depict different precipitation accumulation intervals from 1 hour (1st row) to 24 hours (3rd row) . Blue lines refer to our AI strategy while red lines refer to the logistic regression, LR. The shaded regions highlight areas where forecasts demonstrate skill. In addition, the horizontal and vertical lines show the prevalence-based probabilities of the event for forecasts and observations. Furthermore, the two smaller diagrams included as insets depict the sharpness diagrams (in reference to the fold 3), illustrating the relative frequency of precipitation occurrence predictions (abbreviated as ‘Count’) at different probability levels (x-axis of the inset). Colors are coded as in the reliability diagrams.
