answer:It certainly seems counterintuitive to me unless. At higher temperatures it would seem the gasses would be less dense, not more. Rising temperatures will also tilt the greenhouse gas mix more toward methane and less toward CO2. Methane is much less dense than CO2, but it is 72 times more effective as a greenhouse gas over its 1st year in the atmosphere. If you can buttonhole him at some point, ask him to explain his thinking on that.