Abstract
Continuous observations of the wind field obtained using the MST radar at Poker Flat, Alaska, over the past 5 years enable a determination of kinetic energy density (Joules per m−3) height profiles in the troposphere, stratosphere and mesosphere. Three specific frequency intervals of the horizontal wind velocity spectrum are processed to yield height profiles of kinetic energy density corresponding roughly to periods of gravity waves, tides and planetary waves (although the wind fluctuations do not necessarily correspond to wavelike processes). Preliminary results of this analysis are presented here for both summer and winter periods.
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