Suggested ice variables

[jchylik]

In the list of variables there is a initial profile of (cloud) ice, but it seems that there is no advective tendency for cloud ice.

While liquid droplets are usually expected to condensate and evaporate relatively fast, this is not the case of cloud ice.
Would it be OK to add a cloud ice advection?

If we follow the example of tnqv_adv for advection of water vapour it could be just:
('tnqi_adv', {'name': 'tendency_of_cloud_ice_water_due_to_advection', 'units': 's-1', 'plotcoef': 86400.*1000., 'plotunits': 'g kg-1 day-1'}),