Q40
At night, low clouds:
A.
Enhance the atmospheric greenhouse effect
AnswerB.
Weaken the atmospheric greenhouse effect
C.
Are often caused by the atmospheric greenhouse effect
D.
Have no effect on the atmospheric greenhouse effect
Answer: Option A
Solution
Answer: Option A
Solution:
At night the reflection effect is zero so the greenhouse effect and reflection of thermal radiation dominate and the low thick clouds have a warming effect.The greenhouse effect could at most return 50 percent of the outgoing radiation back to the Earth