Fig. 6: The impact of different width of lateral boundary strategies on the forecast effect of inner region.

RMSEs (HRRR.A as benchmark) of YingLong-HRRR.F24 forecast in the inner area with no LBC (black lines), lateral boundary with widths 24 km (green lines), 96 km (purple lines), 207 km (blue lines) and HRRR.F (red line).