Would the be exactly if we say that rain is done in the top troposphere when dew excellent in the lower troposphere? Or over there are better definitions because that the key difference between them?

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You are watching: Is dew a form of precipitation

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Dew is condensate that develops on the surface, usually by the surface ar cooling to a temperature listed below the dew allude of the air. Thus the water vapr accumulation onto the surface.

Rain is developed by Collision-Coalescence or the Bergeron-Findelsen process. The cloud droplets are formed by the condensation that water vapor ~ above aerosols, when the wait reaches supersaturation via the Kelvin Effect and also Raoult result (which provides up Kohler Theory).


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Both are condensation, yet dew forms straight on a hard surface, rain forms in the air. In theory you could type dew in any part of the setting if you had something because that it to form on.




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Somebody posted that rain is either formed via collision-coalescence or the Bergeron-Findelsen process. This is misleading. The simplest classification of rain procedures is right into "warm-rain" and also "cold rain" processes, wherein the former involves creation of rain through vapor and also liquid phases, and also the last involves production of rain through vapor, liquid, and solid phases that water. In the former, rain drops can form via "autoconversion" (vapor deposition onto fluid drops until they reach the dimension classified together rain), or collision-coalescence. In cold rain processes, rain can likewise be developed by melting ice cream particles, typically as they descend below the ecological 0 level C level.

The Bergeron-Findelsen procedure is a procedure by which ice cream particles flourish via vapor deposition in the presence of supercooled fluid water. Because of a difference in saturation vapor push over ice vs. End water, in these conditions ice will flourish via vapor deposition at the price of the water droplets, which decrease in dimension via evaporation. Ice cream particles can additionally grow via other processes such as aggregation (ice particles difficult to various other ice particles), riming (liquid drops sticking to ice cream particles), or plain-old vapor deposition (i.e. No in the existence of supercooled liquid droplets). Ice particles (e.g. Snow, hail, graupel) get an impressive via any type of of these processes can then sediment and melt, becoming rain. When the Bergeron-Findelsen process is crucial cold rain process, the is no the only one, and primarily action to grow ice (that could later melt to end up being rain).