What is the formation of a cloud a direct result of?
Cloud formations are the direct result of high and low pressure systems colliding and forming condensation (the cloud).
Partly: The formation of an open cluster begins with the collapse of part of a giant molecular cloud (a dense cloud of gas containing thousands of times the mass of the Sun) Many factors could trigger the collapse of a giant molecular cloud (or part of it) and a burst of star formation which will result in an open cluster, including shock waves from a nearby supernova and gravitational interactions.
Three factors that must be present for cloud formation are; hydroscopic nuclei, moisture, and cooling process. Amounts of the above affect cloud formation. Do you mean the affect of precipitation? Or does this answer your question? Furthermore, Precipitation will affect the mass of a cloud as well as evaporation and sublimation. Hope this helps.
Adiabatic cooling relates to cloud formation in such, when it pushes air out of the way when rising, energy is released into the surroundings and the air cools "adiabatically." When the air that is cooling meets up with other air that is in the same situation, a cloud starts to forms, and when that cloud forms, it cools enough when it reaches a certain altitude and rains.