How we define "IR" (InfraRed light or radiation or wavelengths), and then also conflate IR with 'heat,' seems to be confusing.

For our earthly purposes:

http://elte.prompt.hu/sites/default/files/tananyagok/atmospheric/images/m62ed64fb.jpg
...or also:
http://www.helpsavetheclimate.com/atmoswindows1.gif

The 'Near-IR' radiation isn't much affected by, or involved with, the greenhouse effect.
Heat transfer (and cooling) occur at wavelengths longer than 3 microns (to the right, above).

This is because (to get detailed)
...wavelengths shorter than 3 micron get absorbed by atoms, excite electrons ...yada yada yada,
but that is not what "temperature" or heat transfer are.

Molecular absorption (or emission) of wavelengths longer than 3 microns,
and the consequent molecular vibrations or excitations,
is what causes (creates/is perceived as) temperature and heat transfer.

If shortwave energy (re: atomic -not molecular- absorption) can find
a transparent route in to the surface, then it can become potential (longwave)
molecular heating and heat transfer and cooling.

That is why concern with the greenhouse effect
focuses on outgoing "longwave" radiation.

~

Pyrolysis creates reduced carbon! ...Time for the next step in our evolutionary symbiosis with fire.