The Rotation Rate of the Upper Atmosphere: A Nonlinear Effect.
Rept. for Jun 70-Jan 71,
AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS
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In order to study the apparent super-rotation of the earths upper atmosphere, one examines a non-linear solution to the continuity, momentum conservation and state equations of gasdynamics for the steady state motion of a gravitationally stratified, cylindrical, inviscid atmosphere under the influence of a steady state, local time dependent temperature distribution. The resultant flow field can be understood in terms of angular momentum conservation of air masses heated, rising air decreases its rotation rate and cooled, falling air increases its rotation rate. The local-time average of the differential rotation rate may give rise to an apparent altitude dependent super-rotation. Comparison with observations is presented. Author
- Atmospheric Physics