Prediction of Moderate and Heavy Rainfall in New Zealand Using Data Assimilation and Ensemble

Figure 7

Relative operating characteristic (ROC) diagrams including all of New Zealand for the mod-heavy (a and b) and heavy (b and c) rainfall thresholds. Bias is shown by the grey dotted lines and two different measures of forecast skill, PSS (a and c) and SEDI (b and d), are shown with shading.

(a) PSS, 20 mm/day

(b) SEDI, 20 mm/day

(c) PSS, 50 mm/day

(d) SEDI, 50 mm/day