Question

which of the following statements is most accurate regarding clouds and radiation?
a low clouds allow a lot of light through to the surface.
b high clouds generally reflect the majority of solar radiation that reach them back into space.
c high clouds generally produce a warming effect.
d low clouds usually have a warming effect, allowing a lot of light through to the surface.

Explanation:

• Option A: Low clouds (like stratus) are thick, reflect much light, not let a lot through. Incorrect.
• Option B: High clouds (e.g., cirrus) are thin, reflect little solar radiation. Incorrect.
• Option C: High clouds trap long - wave radiation (heat) from the surface, causing a warming effect. Correct.
• Option D: Low clouds reflect light, cool the surface, don't have a warming effect or let much light through. Incorrect.

Answer:

C. High clouds generally produce a warming effect.