Contains records drawn from the World's literature on meteorology, climatology, atmospheric chemistry and physics, astrophysics, hydrology, glaciology, physical oceanography and environmental sciences. Summaries from over 600 journal titles, as well as conference proceedings, books, technical reports and other monographs, are included. Each record includes complete citation information, Universal Decimal Classification subject classifications, and subject descriptors drawn from the MGA Controlled Vocabulary. Online versions of the Controlled Vocabulary and the UDC subject classifications are available to facilitate online searching. MGA is produced by the American Meteorological Society and is published by CSA. Coverage dates are 1974 to the present.