https://wattsupwiththat.com/2009/06/13/results-lab-experiment-regarding-co2-snow-in-antarctica-at-113f-80-5c-not-possible/ https://wattsupwiththat.com/2009/06/1

https://wattsupwiththat.com/2009/06/13/results-lab-experiment-regarding-co2-snow-in-antarctica-at-113f-80-5c-not-possible/ https://wattsupwiththat.com/2009/06/13/results-lab-experimen... I made some slightly more detailed posts elsewhere but this article addresses your point directly. Essentially, this is not a viable method for removing CO2 from the sky, because there's so little CO2 in the sky that it changes all the basic physics assumptions. This is actually relatively basic undergraduate level napkin math from a chemical engineering perspective, but outside of that discipline most people understandably don't have experience with estimating physical states of mixed gases.