In a typical system without human influence, as the surface of the Earth warms, it will emit greater amounts of infrared radiation back into space. This is a phenomenon known as Planck feedback. In the absence of anthropogenic influence, this system would be
classified as what?
-0)
A)
B)
This is a negative feedback loop, as high levels infrared levels leaving the
Earth will increase the impact of global warming.
This is a positive feedback loop, as harmful infrared radiation will interfere
with the electromagnetic radiation from the incoming sun's rays.
This is a positive feedback loop, as the loss of infrared radiation will
increase the temperature of the atmosphere, which will warm the surface
once more.
This is a negative feedback loop, as the warming of the Earth's surface
causes greater infrared radiation to be emitted into space, which decreases
the greenhouse effect.
o
D)