Quote Originally Posted by Papewaio
But not all gases block the same range of wavelengths within the infra-red.

So there are windows which let out the infra-red... increasing the gases that block these windows (within the infra-red range) has different effects ... if the window is fully blocked (100%) extra gases will not filter out other window ranges, while a small amount of gas that blocks an unfiltered range will have a much larger effect... gases that do block infra-red generally do not block the same set of wavelengths (makes sense as it is related to shape of the molecules).
yeah but about all infra-red light give warmth,...I believe.