Abstract: During the 1990 Navajo Generating Station (NGS) Winter Visibility Study, a network of surface and upper-air meteorological measurement systems was operated in and around Grand Canyon National Park to investigate atmospheric ...

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 ...