Meteorological and Geoastrophysical Abstracts This database includes records drawn from the world's literature on meteorology, climatology, atmospheric chemistry and physics, astrophysics, hydrology, glaciology, physical oceanography and environmental sciences. MGA is produced by the American Meteorological Society. ProQuest Deep Indexing: Atmospheric Sciences supplements the database with access to indexed charts, figures, graphs, maps, photographs, and tables from the scholarly research and technical literature for selected records.