turbidity, \(\tau\)

in light scattering
https://doi.org/10.1351/goldbook.T06533
The apparent @[email protected] of the incident radiation due to @[email protected] For small particles, direct proportionality exists between turbidity and the @[email protected]
Source:
Purple Book, 1st ed., p. 66 [Terms] [Book]
See also:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2218 [Terms] [Paper]