* Treats each (file, time_index) pair as a frame. * Recomputes lat/lon, grid spacing, extent, and cities per frame. * Uses only netCDF4 + wrf-python for field access (no xarray).
* Daily accumulation between consecutive 00Z valid times: daily_rain_00z = (RAINC + RAINNC + RAINSH)_current - (RAINC + RAINNC + RAINSH)_previous converted from mm to inches using 0.0393701. * Daily ...