It is likely that an increase in global temperature would result in an increase in cloud cover. Which of the following statements BEST describes the total impact of additional clouds on the Earth system?
A) Clouds provide an exclusively positive- feedback response to warming.
B) Clouds provide an exclusively negative- feedback response to warming.
C) Clouds provide both positive- feedback and negative- feedback responses to warming.
D) Clouds provide neither positive- feedback nor negative feedback responses to warming.

Question

Quizplus · Accepted Answer

Clouds can have both positive and negative feedback responses to warming. Increased cloud cover can reflect more sunlight back into space, resulting in a cooling effect (negative feedback). However, clouds can also trap outgoing infrared radiation, resulting in a warming effect (positive feedback). The net effect of additional clouds on the Earth system will depend on the specific type and location of the clouds, as well as the overall magnitude of the warming.

It Is Likely That an Increase in Global Temperature Would