Editing Cloud physics (section)

====Non-adiabatic cooling====
Along with adiabatic cooling that requires a lifting agent, there are three other main mechanisms for lowering the temperature of the air to its dew point, all of which occur near surface level and do not require any lifting of the air. Conductive, radiational, and evaporative cooling can cause condensation at surface level resulting in the formation of [[fog]].<ref name="fog formation">[[#CITEREFStubenrauchRossowKinneAckerman2013|Ackerman]], p. 109</ref>  Conductive cooling takes place when air from a relatively mild source area comes into contact with a colder surface, as when mild marine air moves across a colder land area. Radiational cooling occurs due to the emission of [[Thermal radiation|infrared radiation]], either by the air or by the surface underneath.<ref>{{cite web |author=Glossary of Meteorology |year=2009 |url=http://amsglossary.allenpress.com/glossary/search?p=1&query=radiational+cooling&submit=Search |title=Radiational cooling |publisher=[[American Meteorological Society]] |access-date=27 December 2008 |archive-url=https://web.archive.org/web/20110512161339/http://amsglossary.allenpress.com/glossary/search?p=1&query=radiational+cooling&submit=Search |archive-date=12 May 2011 |url-status=dead }}</ref> This type of cooling is common during the night when the sky is clear. Evaporative cooling happens when moisture is added to the air through evaporation, which forces the air temperature to cool to its [[wet-bulb temperature]], or sometimes to the point of saturation.<ref>{{cite web |author=Fovell, Robert |year=2004 |url=http://www.atmos.ucla.edu/~fovell/AS3downloads/saturation.pdf |title=Approaches to saturation |publisher=[[UCLA|University of California in Los Angeles]] |access-date=7 February 2009 |url-status=dead |archive-url=https://web.archive.org/web/20090225074155/http://www.atmos.ucla.edu/~fovell/AS3downloads/saturation.pdf |archive-date=25 February 2009 }}</ref>