TIL. Thnx for sharing.
Does that make h20 worse or better than co2 as an aviation byproduct in respect to global warming.
Perhaps there is an opportunity for a fuel additive that minimizes the formation of cirrus clouds, if the clouds are the source of so much of the climate impact.
Excess H2O (water vapor) falls out of the sky as rain, so it's fairly constant (ie. "maxed out"), and its long term concentration levels are a function of CO2 equivalent gases in the atmosphere. So if you increase CO2 levels, H20 levels will naturally increase as well, and vice versa.