what radiation trapped by greenhouse effect
The warm planetary surfaces then emit infrared radiation of their own. The Greenhouse effect describes the condition where this infrared radiation is trapped and absorbed by gases and vapor in the atmosphere, and the atmosphere is then heated more than it would otherwise be without the Greenhouse effect.
This infrared radiation may not be free to propagate back through the atmosphere. The Greenhouse effect describes the condition where this infrared radiation is trapped and absorbed by gases and vapor in the atmosphere. The atmosphere is then heated more than it would otherwise be without the Greenhouse effect.