re your parts..
#1 “through the ceiling and then switch to the snowmobile suits”
#2 “The temperature at the ceiling of the greenhouse is the highest it gets in there and diminishes the closer you get to the ground. It is still hot at the ground but that is only because it is hotter than Hades at the ceiling, the hottest level.”
#3 The temperature at the ceiling of the greenhouse is the highest it gets.
Comment: I also believe this is the greatest hoax ever perpetrated on humankind. Now, your above, I’m confused, it sounds like you are saying it gets hotter as we climb towards the ceiling, then gets colder above the ceiling. Also you mention there is no ceiling?