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To illustrate the performance of ecCKD, the plots are shown for one of the better CKD models it produced, targeting the climate application with the FSCK band structure and 27 k terms. The parts of the spectrum contributing to each k term are illustrated below. The first term represents the most optically thin parts of the spectrum while terms 2-27 target the absorption by an individual gas. Most of the terms are for CO2 and H2O, except for terms 2, 17 and 21 for O3, term 10 for N2O and term 11 for CH4.
The following plots evaluate fluxes and heating rates for the four CKDMIP greenhouse-gas scenarios "Present", "Preindustrial", "Glacial Maximum" and "Future" (click on individual plots to expand). The evaluation has been performed using radiative transfer with four zenith angles in each hemisphere (8 streams). The shaded regions in the central three panels of each plot encompass 95% of the data. The upwelling TOA fluxes are underestimated by 0.3-0.4 W m-2.
