Condensation of damp air. Hot and humid weather, cold and dry air collide. Association of two air masses. Cloud layer profile. Moist air flow movement. Heavy dense damp cloud. In meteorology, a cloud is an aerosol consisting of a visible mass of minute liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body. Water or various other chemicals may compose the droplets and crystals. Exosphere, thermosphere, mesosphere, stratosphere, and troposphere. On Earth, clouds are formed as a result of saturation of the air when it is cooled to its dew point, or when it gains sufficient moisture (usually in the form of water vapor) from an adjacent source to raise the dew point to the ambient temperature. Dampish damp moist wet muggy mountain summit peak ridge moisture humidity dampness mount climate rise rising rises wetness hillside brae slope current of air weather sparse and fragmented landscape hill hills hilly highland nature best beautiful amazing. They are seen in the Earth’s homosphere which includes the troposphere, stratosphere and mesosphere. Variable unstable mixed weather. 4K UHD 3840×2160.