Cloud ice nucleation versus ice growth
= Cloud ice nucleation versus ice growth
Nucleation creates the initial ice embryo, either within liquid or with assistance from a suitable interface. Deposition, <riming> and <ice-crystal aggregation> enlarge already existing ice. A list of efficient ice-growth processes does not by itself explain how the first crystals formed. Small-particle nucleation probabilities depend on thermodynamic driving, interfaces, volume and exposure time.