Radiative forcing (climate forcing) refers to
A) the amount by which some perturbation causes Earth's energy balance to deviate from zero.
B) the power of electromagnetic radiation per unit area.
C) the length of time a greenhouse gas, on average, resides in the atmosphere.
D) the contribution of each greenhouse gas to global warming.
E) a measurement of solar radiation energy received on a give surface area.
Question 2
Water vapor in the atmosphere is called
A) humidity.
B) deposition.
C) sublimation.
D) water.
E) transpiration.
