Abstract: tract

Abstract: The cumulus cloud populations of the Florida peninsula were photographed periodically and comprehensively on 19 days in August and September 1957, using multiple, high-flying aircraft. Particular sets of these photographs, ...

Abstract: A sequence of five closely spaced raindrop samples taken during the passage of a shower displayed approximate monodispersity in each sample, and drops decreasing to drizzle size with time. Correlations of median volume ...

Abstract: Helicopter wake effects on stratus and stratocumulus clouds are described. Holes and troughs were created in such clouds with dimensions several hundred feet across. The velocities and penetration distances of the downwash ...

Abstract: Results of helicopter clearing experiments conducted at the Greenbrier Valley Airport, Lewisburg, W. Va., during the period 7?29 September 1969, are presented and discussed. Thirty-five hover experiments and 18 runway-clearing ...

Abstract: Values of diffusion coefficients determined from the observed closing times of nine conical-shaped clearings in fog produced by hovering helicopters at Lewisburg, WV, in September 1969 are presented. The values were ...

Abstract: Uncertainty analyses and operational experience at the Air Force Geophysics Laboratory (AFGL) have shown that for single samples of ice hydrometeors, the factor ? = M/(??), where M (spectral liquid water content) and Z ...

Abstract: A survey is made of the clouds and precipitation detected at a wavelength of 1.25 centimeters. The frequencies of various cloud types and their typical echo characteristics are presented. Within 89 periods during which ...