deposition velocity 

in atmospheric chemistry
https://doi.org/10.1351/goldbook.D01602
The ratio of flux density (often given in units of g cm−2 s−1) of a substance at a sink surface to its concentration in the atmosphere (corresponding units of g cm−3). While the units of this ratio are clearly those of velocity (in this case cm s−1), the ratio is not a flow velocity in the normal sense of the word.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2184 [Terms] [Paper]
Citation: 'deposition velocity' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.D01602 RIS BibTex EndNote
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Last revised: February 24, 2014