Question

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

Explanation:

• Option A: High clouds (e.g., cirrus) are thin and allow short - wave solar radiation through but trap long - wave terrestrial radiation, leading to a warming effect.
• Option B: Low clouds (e.g., stratus) are thick and reflect much solar radiation, not allowing much light to the surface.
• Option C: High clouds transmit more solar radiation; low clouds reflect more solar radiation back to space.
• Option D: Low clouds have a cooling effect (due to high reflectivity) and do not allow much light through.

Answer:

A. High clouds generally produce a warming effect.