JET STREAMS OVER THE USSR.
ARMY MISSILE COMMAND REDSTONE ARSENAL ALA PHYSICAL SCIENCES LAB
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Climatological analysis of the distribution of jet streams over the USSR was based on a summarization and averaging of data on individual jet streams collected over a period. Russian investigations of jet streams were based mostly on observational data obtained during the 1950s. A comprehensive study of trophospheric jet streams observed over European Russia and West Siberia was made by IU. V. Kurilova and based on radiosonde data for 1950-1954. The method of composite charts was used to analyze the very changeable positions of jet streams over Russia. These charts show the axis of Upper Frontal Zones for each month. The investigation of such composite charts for 60 months resulted in a definition and outlining of those areas where the Upper Frontal Zone, and, consequently, the jet streams were most frequently observed.