Earth
Cloud formation: lifting an air parcel
Follow rising air as it cools, reaches saturation and turns part of its water vapour into liquid droplets.
Try this
Change initial humidity, then compare the altitude where condensation starts. Temperature and humidity are computed along the ascent.
The model and its limits
Idealised rising parcel with water-only saturation and retained liquid. Time is accelerated 20 times. Cloud shape is illustrative; no ice, turbulence or droplet microphysics.
Equations used in the module
Equations Gamma_d = g / c_p q_total = q_vapour + q_liquid
