nucleus"1. The positively charged core of an atom about which its electrons orbit. Almost all the mass of an atom resides in its nucleus, the diameter of which is about 104 times smaller than that of the atom.
Nucleus A particle of any nature upon which molecules of water or ice accumulate.
Numerical Forecasting Forecasting the weather through digital computations carried out by supercomputers.
Ice Nucleus
Any particle that serves as a nucleus in the formation of ice crystals in the atmosphere.
Ice Pellets ...
Ice Nucleus - permalink - collapse
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Any particle that serves as a nucleus in the formation of ice crystals in the atmosphere.
NOAA National Weather Service - Cite This Source - This Definition ...
Condensation Nucleus - a particle in the atmosphere, either liquid or solid, upon which condensation of water vapor begins ...
Cloud condensation nucleus: a particle, either liquid or solid, upon which water condenses to form cloud droplets.
Cold front: a zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer.
To encourage the warm rain process, calcium chloride is usually used to provide the nucleus for raindrop formation.
Most water droplets are formed when water vapor condenses around a condensation nucleus, a tiny particle of smoke, dust, ash, or salt. In supersaturated conditions, water droplets may act as condensation nuclei.
Water which has been cooled below 0 °C but remains in liquid form. Occurs when no seed crystal or nucleus is present around which a crystal structure can form.
Surface based convection ...
Freezing nucleus Particle on which the freezing of water occurs. Freezing point Temperature at which a liquid solidifies under any given set of conditions.
 See also: Water, Surface, Cloud, Earth, Air
  
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