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Proceedings Paper

Cold Environment Fogs And Measurements
Author(s): James E Jiusto; G.Garland Lala
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Paper Abstract

For several years radiation fog field programs have been conducted at Albany, NY, with an emphasis on understanding the basic mechanisms leading to dense fog formation. This past year a cooperative effort ("Fog Project-1982") involved nine university, federal and private research laboratories, including NCAR staff and their remote system of 25 portable automated mesonet (PAM) weather stations. A number of comprehensive data sets (boundary layer meteorology and cloud physics variables) during the 14-16 hour nocturnal evolution of fog have been obtained. In particular, the extinction of light in the visible and infrared (10.6 pm wavelength), associated visibility, drop size distributions, liquid water content, and vertical tethered-balloon soundings provided new insights into the structure of fog. A CO2 laser transmissometer was developed that yielded direct information on fog density. During October of 1981 and 1982, a number of radiation fogs occurred that were super-cooled in their lowest 20-50 m. This posed certain troublesome to critical measurement problems with several instruments. Cold environment techniques were devised to overcome some of these instrumentation difficulties.

Paper Details

Date Published: 22 September 1983
PDF: 6 pages
Proc. SPIE 0414, Optical Engineering for Cold Environments, (22 September 1983); doi: 10.1117/12.935861
Show Author Affiliations
James E Jiusto, State University of New York (United States)
G.Garland Lala, State University of New York (United States)

Published in SPIE Proceedings Vol. 0414:
Optical Engineering for Cold Environments
George W. Aitken, Editor(s)

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