Abstract: The quasi-geostrophic, baroclinic stability problem is solved for an arbitrary zonal wind profile U = U(p) and for an adiabatic lapse rate. It is shown that the phase speed of the waves in this case depends on the vertical ...

Abstract: It is shown that calculations of the energy conversion from available potential energy to kinetic energy based on vertical velocities obtained by the so-called adiabatic method may lead to erroneous results. An analysis ...

Abstract: The kinetic energy of the horizontal, hydrostatic flow is divided into the kinetic energies of the vertically integrated flow and the deviation from this flow, the so-called shear flow. The energy transformation between ...

Abstract: The behavior of very long waves in a two-parameter model with no divergence in the mean flow has been investigated. It is found that the temperature field and the pressure field move almost independently of each other. The ...

Abstract: The normal mode initialization procedure is investigated. It is shown that a balance exists between the wind field and the mass field when the gravity modes have been removed from the initial fields. Adopting a representation ...

Abstract: A comparison is made between the stability properties of the non-divergent and divergent one-parameter models. It is show that the introduction of divergence in the one-parameter model reduces the rate of growth of unstable ...

Abstract: Different factors influencing the changes in the zonally averaged wind are investigated. It is evident from recent investigations of errors in the zonally averaged winds in the non-divergent, one-parameter model that the ...

Abstract: The equation for the vertical velocity in a quasi-non-divergent, three-parameter model has been solved for a certain simple flow pattern. The importance of vertical variation of static stability and of the horizontal wind ...

Abstract: The contribution from the divergent part of the horizontal wind to the energy conversion between the vertical shear flow and the vertical mean flow has been computed using atmospheric data from the isobaric surfaces: 850, ...

Abstract: The energy conversion between the vertical shear flow and the vertical mean flow has been computed using atmospheric data from the isobaric surfaces: 850, 700,500, 300, and 200 mb. In comparison with earlier calculations ...