Some ocean variables have characters that don't always render

### Description

#2054 introduced variables with characters that [don't always render](https://github.com/CliMA/ClimateMachine.jl/pull/2054#discussion_r587881210).

<img width="1492" alt="Screen Shot 2021-03-05 at 8 58 29 AM" src="https://user-images.githubusercontent.com/1880641/110147833-fa1e8980-7d90-11eb-9f3d-04a2a95b646b.png">
