Improving Visibility Near Airports During Periods of Fog

Abstract

Liquefied propane, released from ground-based dispensers, was used to seed twelve fogs during the period 6 October 1964 to 24 July 1965. Six of these tests were conducted at Camp Century, Greenland. Five were successful, i.e., glaciation of the supercooled droplets and subsequent precipitation occurred. The sixth test was made on an ice fog which was not amenable to this type of modification. The remaining six tests were made in the Hanover-Lebanon, N.H. area. Five of these tests were successful. The sixth experiment, conducted under a low stratus cloud, yielded no reaction. It is concluded that propane is safe and economical to use as a fog dispersing agent when used as described.