This page evaluates the ecRad implementation of the RRTMG gas optics scheme operational in the ECMWF model. It is indistinguishable from version 3.9 of RRTMG available from AER. RRTMG is designed for weather and climate applications. The comparisons below use the 50 profiles of the "Evaluation-1" CKDMIP dataset. The reference calculations were performed using LBLRTM to generate the high resolution absorption spectra and the CKDMIP software to perform the radiative transfer. This page should be compared to the RRTMGP comparisonevaluation, where RRTMGP is an updated version of RRTMG.
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