xOrographic lift : Occurs when an air mass is forced to rise over geographic relief from a lower elevation. As the air mass rises it expands and cools adiabatically, which can raise the relative humidity to 100%, create clouds and precipitation.
Without meaning to, airplanes can cause certain types of clouds to produce snow or rain. When the aircraft climb or descend through mid-level clouds, if the atmospheric conditions are right then the planes...Read more