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This paper describes the correspondence of planetary wave activity between the troposphere and the stratosphere during the Northern Hemisphere winter from December 1981 to March 1982 using Elliassen–Palm E;P) flux diagnostics. Two typical cases of correspondence are found during this period. In December and early January (period 1), the time variation of wave activity in the troposphere and stratosphere is out of phase; when the tropospheric wave activity is, vigorous the stratospheric wave activity is quiet, and vice versa. In February and March (period 2), after the stratospheric sudden warming, the tropospheric wave activity seems to propagate into the stratosphere. These two periods (period 1 and 2) are characterized by the following dynamical features. The mean zonal geostrophic wind at middle latitudes in the upper stratosphere is stronger in period 1 than in period 2. The meridional gradient of the mean zonal wind velocity at high latitudes in the troposphere and lower stratosphere is stee...

Planetary Wave Activity in the Troposphere and Stratosphere during the Northern Hemisphere Winter