buzzsaw
The vapour canopy theory is that the Earth’s atmosphere was surrounded by a water vapour blanket that collapsed at the onset of the Flood.
Water vapour can only exist in the atmosphere as a result of the evaporation of water which requires a measureable amount of heat energy in order to accomplish such. The measurement is specifically 2260 kilojoules per kilogram. Since this immense vapour canopy exists in the atmosphere at the time frame of Noah and is purported to have fallen to the earth as a rainfall that is recorded in the bible we can calculate just how much heat energy must be released into the atmosphere in order for the vapour canopy to "freeze" back to the liquid state that constitutes rainfall Buz old boy.
Now if you can find some explanation of the volume that the vapour canopy occupied we can give you precise figures to help you see what the consequences of this idea involve.
To make it easy you can even go and find a figure in pounds and not kilograms. I await your response.
"The world is so exquisite, with so much love and moral depth, that there is no reason to deceive ourselves with pretty stories for which there's little good evidence. Far better, it seems to me, in our vulnerability, is to look Death in the eye and to be grateful every day for the brief but magnificent opportunity that life provides." - Carl Sagan, Billions and Billions