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uation The plete system of equations for a dry atmosphere Vertical coordinates Chapter 3. Vortex Motion in Atmosphere Vorticity, vortex lines and vortex tubes Vorticity equation and vorticity conservation Circulation and Kelvin’s circulation theorem Potential vorticity and Potential vorticity conservation Quasigeostrophic potential vorticity equation Potential vorticity inversion and impermeability theorem Helicity and helicity conservation Chapter 4. Quasigeostrophic Dynamics and Geostrophic Momentum Approximation Quasigeostrophic motion and Quasigeostrophic theory Geostrophic adjustment Balanced flow dynamics and balance equations Energy and Entropy in quasigeostrophic flow Twodimensional turbulence and quasigeostrophic turbulence theory Geostrophic momentum approximation and semigeostrophic equation Chapter 5. Atmospheric Boundary Layer Dynamics Atmospheric turbulence and atmospheric boundary layer Reynolds averaging and atmospheric boundary layer equation Ekman layer dynamcis Ekman la