Cloud Types Mug

Clouds are formed in Earth's atmosphere when water evaporates into vapour from oceans, lakes, and ponds or by evapotranspiration over moist areas of Earth's land surface. The vapour rises up into colder areas of the atmosphere due to convective, orographic, or frontal lifting. The water vapour attaches itself to condensation nuclei which could be anything from dust to microscopic particles of salt and debris. Once the vapour has been cooled to saturation, the cloud becomes visible. All weather-producing clouds form in the troposphere, the lowest major layer of the atmosphere. However very small amounts of water vapour can be found higher up in the stratosphere and mesosphere and may condense into very thin clouds if the air temperatures are sufficiently cold. One branch of meteorology is focused on the study of nephology or cloud physics. weather