WRF-ARW Variational Storm-Scale Data Assimilation: Current Capabilities and Future Developments

Figure 6

Fractions scale score (FSS) versus forecast hour of hourly accumulated precipitation (mm h⁻¹) for the thresholds 5 mm with the radius of influence (ROI) of 8 km (a), 24 km (b), and (c) 48 km, respectively.

(a) 5 mm ROI = 8 km

(b) 5 mm ROI = 24 km

(c) 5 mm ROI = 48 km