Input a fixed cloud layer

[nichollsh]

AGNI calculates cloud water droplet locations and densities based on its condensation scheme.

However, it would be useful if these could be fixed at a particular pressure region as an input to the model. Something similar could be done to hazes.

Adding simple 'grey' hazes into the SOCRATES spectral files should be possible. These would then be turned on/off at each level as required by the user. The location could be set by (e.g.) FastChem or a haze formation model.

• Input cloud region via config/function call
• Allow using spectrally-grey clouds with configurable opacity

[nichollsh]

https://ocdb.smce.nasa.gov/