Parameterization Quiz

Boundary-layer turbulence and convection are just two of the processes which must be parameterized in numerical weather prediction models. Below is a list of a few other processes. Which ones do you think occur on a scale too small to be resolved by the models and need to be parameterized?

Question 1: Must horizontal temperature advection be parameterized?

Question 2: Must evaporation be parameterized?

Question 3: Must clouds be parameterized?

Question 4: Must rain be parameterized?