Accession Number:

AD0752931

Title:

Effectiveness of Fog Dispersal Techniques at Seattle-Tacoma and Spokane International Airports.

Descriptive Note:

Final rept. 12 Nov 71-10 Jul 72,

Corporate Author:

NORTHWEST ENVIRONMENTAL TECHNOLOGY LABS INC BELLEVUE WASH

Personal Author(s):

• Tank,W. G.
• Kreiss,W. T.
• Lansinger,J. M.
• Makela,D. R.
• Barr,N. M.

Report Date:

1972-07-01

Pagination or Media Count:

194.0

Abstract:

An evaluation of the effectiveness of airborne chemical fog dispersal techniques employed at the Seattle-Tacoma and Spokane International Airports, Washington, was conducted during the 1971-72 winter season. Measurements of meteorological and fog parameters, combined with visual and photographic observations made during a three-month field period, were subjected to interpretive analysis the analysis resulted in the assignment of 25 percent and 57 percent effectiveness ratings for the Sea-Tac and Spokane fog dispersal program, respectively. Immediately apparent environmental impact of these operations was judged to be minimal. A substantial body of evidence was acquired which indicates that heat is more effective than chemicals in local dissipation of both warm and cold fogs. Author

Descriptors:

• *AIRPORTS
• *FOG
• *CHEMICAL COMPOUNDS
• SCATTERING
• AIRBORNE
• ELECTROLYTES
• PHOTOGRAPHY
• STATISTICAL ANALYSIS
• DISSIPATION FACTOR
• HEAT
• AIR TRANSPORTATION
• SAFETY

Subject Categories:

• Terminal Flight Facilities
• Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE