Water vapour absorbs the thermal radiation (heat trying to escape earth) better than it absorbs sunlight (heat trying to enter earth). Therefore, the more water

Water vapour absorbs the thermal radiation (heat trying to escape earth) better than it absorbs sunlight (heat trying to enter earth). Therefore, the more water vapour in the atmosphere, the stronger the greenhouse effect. https://en.wikipedia.org/wiki/Electromagnetic_absorption_by_water https://en.wikipedia.org/wiki/Electromagnetic_absorption_by_... https://en.wikipedia.org/wiki/Greenhouse_effect https://en.wikipedia.org/wiki/Greenhouse_effect