6. Climate and Climate Change
Climate Feedbacks — Quiz
Test your understanding of climate feedbacks with 5 practice questions.
Practice Questions
Question 1
Due to the Clausius–Clapeyron relation, atmospheric water vapor capacity increases by about 7\% per kelvin of warming. If global mean surface temperature rises by $2\,\mathrm{K}$ with constant relative humidity, by approximately what percentage does column water vapor increase?
Question 2
Given a radiative forcing of $F=3.7\,\mathrm{W/m^2}$, a Planck feedback parameter $\lambda_{0}=-3.2\,\mathrm{W/m^2/K}$, and a non-Planck feedback sum $\Sigma\lambda=+1.0\,\mathrm{W/m^2/K}$, what is the equilibrium temperature change $\Delta T$?
Question 3
Why do low-level stratocumulus clouds typically constitute a negative climate feedback?
Question 4
What is the sign and primary cause of the lapse rate feedback in most climate models?
Question 5
Which change in cloud properties represents a positive cloud feedback?