Abstract: Recently a new spectral technique has been developed for the analysis of aperiodic signals from nonlinear systems?the Hilbert?Huang transform. It is shown how this transform can be used to discover synoptic and climatic ...

Abstract: The classical geostrophic adjustment problem is reexamined in a baroclinically unstable atmosphere. After the geostrophic balance is disturbed by either adding mass or momentum to the atmosphere, the resulting evolution ...

Abstract: In this paper the tropospheric-stratospheric system is modeled as a two-layer, quasigeostrophic atmosphere, and the modal and nonmodal solutions that arise from an impulse forcing within the troposphere are found. Regardless ...

Abstract: The ability of various numerical techniques used in compressible, nonhydrostatic models to handlehydrostatic adjustment is intercompared. The exact solution of a linearized model of an isothermal, compressible, nonrotating ...

Abstract: The nonlinear dynamics of inertial-gravity and Rossby waves are studied via the asymptotic method of multiple scales. Two important parameters which enter the problem are the conventional Rossby number ? and a nondimensional ...

Abstract: The barotropic instability of a stationary Rossby wave to arbitrarily small-amplitude perturbations is investigated primarily by analytical means. The flow is found to be unstable; in addition to the unstable and neutral ...

Abstract: The split explicit integration scheme for numerical weather prediction models is employed in a version of the regional numerical weather prediction model of the Japan Meteorological Agency. The finite-difference scheme of ...

Abstract: The stability of the classical Norwegian polar front model is reinvestigated, using a numerical technique to supplement the precise conclusions which are possible in the limiting case of zero density difference or zero ...

Abstract: Lorenz's stability analysis of a finite-amplitude, barotropic Rossby wave is extended to a nonlinear, finite-amplitude, neutrally stable Eady wave with a vertical phase shift. For disturbances with a meridional wave-number ...

Abstract: The author examines hydrostatic adjustment due to heating in two nonisothermal atmospheres. In the first case both the temperature and lapse rate decrease with height; in the second case the atmosphere consists of a ...