nx_world_cumulus_t156.nx

Private multiscale cumulus qualification; canonical terrain/cast unchanged. Relative scene radiance is reconstructed by inverse of nx_tonemap_aces Q10 rational fit plus nx_atmosphere sqrt convention. This cannot recover clipped physical energy. Palette1 is representative primary-land albedo, not measured hemispheric irradiance. Solar irradiance separates scalar inverse-tone intensity from squared authored RGB chromaticity; per-channel inverse near clipping amplified false warm colors. Relative, not calibrated. Two scattering octaves (half extinction, half contribution, half anisotropy) approximate higher orders, not a path-traced solution. One cloud tone/display encode after linear composite. Incumbent final world grade remains downstream.