Variables like external temperature and overall density of distribution of the resulting aggregates were kept constant for each set of values. (sciencedaily.com)
I have seen a suggestion that it is density of an atmosphere that matters, not composition, so CO2 may be an irrelevance unless it affects overall density but being such a small proportion of our atmosphere it could not do so. (newclimatemodel.com)
If as I suggest one includes the much denser oceans as a component of atmosphere then increases in CO2 become irredeemably trivial in terms of their power to alter overall density and thus the global heat retaining process. (newclimatemodel.com)