Fourth in a series of seasonal climatic summaries, this report presents data on the primary climatic variables for the month of October. The global distributions of pressure, temperature, wind, and moisture were taken from a variety of climatological sources and formats, and reworked to show conditions at the surface, at 800 mb, and 400 mb. Also presented are the global distributions of cloudiness, planetary and surface albedo, long-wave radiation, evaporation, precipitation, and selected elements of the surface heat balance. Information is presented on a global grid of 4-deg latitude by 5-deg longitude, in the form of tables and machine-produced maps. Corresponding zonal and global averages are given. The pattern follows that of R-915 for January, R-1029 for July and R-1317 for April.
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