Full non-linear treatment of the global thermospheric wind system. I - Mathematical method and analysis of forces. II - Results and comparison with observations

Details Full non-linear treatment of the global thermospheric wind system. I - Mathematical method and analysis of forces. II - Results and comparison with observations Full non-linear treatment of the global thermospheric wind system. I - Mathematical method and analysis of forces. II - Results and comparison with observations

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jatp...37..193b&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 37, Feb. 1975, p. 193-235.

Physics

4

Atmospheric Circulation, Atmospheric Models, Mathematical Models, Nonlinear Equations, Thermosphere, Wind Velocity, Convection, Ionospheric Composition, Navier-Stokes Equation, Numerical Integration, Wind Profiles

Scientific paper

The equations of horizontal motion of the neutral atmosphere between 120 and 500 km are integrated with the inclusion of all nonlinear terms of the convective derivative and the viscous forces due to vertical and horizontal velocity gradients. Empirical models of the distribution of neutral and charged particles are assumed to be known. The model of velocities developed is a steady state model. In Part I the mathematical method used in the integration of the Navier-Stokes equations is described and the various forces are analyzed. Results of the method given in Part I are presented with comparison with previous calculations and observations of upper atmospheric winds. Conclusions are that nonlinear effects are only significant in the equatorial region, especially at solstice conditions and that nonlinear effects do not produce any superrotation.

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