mist—the transition from haze to fog

Ralph G. Eldridge The MITRE Corporation, Bedford, Mass.

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The transition from haze to fog is manifest by the occurrence of dissimilar optical phenomena which are a consequence of a change in the aerosol distribution of the scattering medium. Based on these effects, visibilities between 0.5 and 1 km are properly called mist. Visibilities in excess of 1 km are, generally, characteristic of haze; whereas, fog is limited to visibilities less than 0.5 km.

1 The research reported was sponsored by the Electronic Systems Division, Air Force Systems Command, under Contract No. AF19(628)-5165.

The transition from haze to fog is manifest by the occurrence of dissimilar optical phenomena which are a consequence of a change in the aerosol distribution of the scattering medium. Based on these effects, visibilities between 0.5 and 1 km are properly called mist. Visibilities in excess of 1 km are, generally, characteristic of haze; whereas, fog is limited to visibilities less than 0.5 km.

1 The research reported was sponsored by the Electronic Systems Division, Air Force Systems Command, under Contract No. AF19(628)-5165.

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