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The shortwave RRTMG gas optics scheme uses a total of 112 g-points (k terms) in 14 bands. The following plots evaluate fluxes and heating rates for the four CKDMIP greenhouse-gas scenarios "Present", "Preindustrial", "Glacial Maximum" and "Future". Five solar zenith angles have been used with a fixed surface albedo of 0.15, the approximate global-mean value. The blue lines show the "raw" results from RRTMG, but since it is known that the solar spectrum is somewhat outdated in RRTMG, the fluxes in each of the 13 "narrow" CKDMIP bands have been scaled to match the more up-to-date solar spectrum used in CKDMIP - these results are in red. It can be seen that this correction substantially improves the agreement with the reference calculations.
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