Abstract: The basic problems involved in the investigation of the effects of ?blocking action? upon the circulation pattern of the northern-hemisphere westerlies are defined and the mode of attack outlined. By application of turbulence ...

Abstract: Small constant-volume balloons, floating within 1700 ft. of the surface, were visually tracked over metropolitan Los Angeles by teams in automobiles. The trajectories and supporting data that were obtained are discussed, ...

Abstract: Data from a three-dimensional pollutant mapping program, conducted in the Los Angeles basin, wereanalyzed to obtain "grand average" vertical profiles sampled on 24 summer days in 1973. Morning andafternoon profiles at four ...