Then they minimize radiation losses to the wall with that reflective coating on the walls. (wattsupwiththat.com)
These temperatures in the base of the troposphere slow down and even stop the surface cooling in the early pre-dawn hours, regardless of radiation losses which are balanced by «heat creep» diffusion and conduction back into the surface. (judithcurry.com)
And the reason that cloudless nights are cooler than cloudy ones is because radiation loss is much higher. (realclimate.org)