Which of the conditions below would most likely produce warming at the earth's surface?
A) increase the amount of low-level global cloudiness
B) increase the amount of sulfur-rich particles in the stratosphere
C) decrease the energy output of the sun
D) increase the amount of global snow cover
E) increase the amount of high-level global cloud cover

Question

Quizplus · Accepted Answer

High-level clouds trap outgoing infrared radiation and reflect incoming solar radiation back to the surface, leading to warming at the Earth's surface. Increasing the amount of high-level global cloud cover would therefore most likely produce warming. On the other hand, choices A, B, C, and D would all result in cooling at the Earth's surface.

Which of the Conditions Below Would Most Likely Produce Warming