The reddish cloud swirling down from the pole consists mostly of dust; it is shown evolving over six hours on June 30.
In the upper cloud layers, with the temperature in the range 100-160 K and pressures extending between 0.5-2 bar, the clouds consist of ammonia ice.
It's very likely that the cloud consists mainly of hydrogen, and it should be possible to get a Doppler shift on the 21 cm.
This cloud consists mainly of water droplets.
The cloud consists of particles ejected by the comet as it travels on its 130-year orbit.
The cloud consists of water vapor that has condensed because of the low pressure in the waterspout.
Clearly therefore the clouds do not consist of water, at least not in their upper reaches.
In all cases the cloud consists of particles in the solid phase.
Your average cute fluffy cumulus cloud consists of about 400 metric tonnes of liquid water.
Evidence published in the early 1980s showed that the clouds consist mainly of sulfur dioxide and sulfuric acid droplets.
