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by HPsquared 1128 days ago
Water vapour is a greenhouse gas but, confusingly, clouds can have either cooling or warming effects. The interactions are pretty complex.
1 comments

> clouds can have either cooling or warming effects

Just in case anyone is wondering... one of the simplest interactions has to do with daytime and nighttime cloud cover.

Daytime cloud cover causes shade, which _can_ lower temps below the clouds. At night, heat from the ground radiates up and clouds can block the radiated heat. This is why cloudless nights during winter are colder, and cloudy summer nights can be stifling.