Abstract: In this study, nonlinear numerical simulations of amplification of low-frequency planetary waves and concurrent blocking formations were performed. The simulations are conducted by a barotropic spectral model derived from ...

Abstract: As an alternative to the finite difference method, we explore the use of the spectral method with normalmodes as the basis functions for discretizing dependent variables in the vertical direction in order to obtainnumerical ...

Abstract: Observed atmospheric energy peaks in a three-dimensional (3-D) spectral domain are compared with energy peaks predicted by the theory of atmospheric baroclinic instability. The 3-D scale index for global-scale atmospheric ...

Abstract: In this study, baroclinic instability of the northern winter atmosphere is investigated in the context of the dynamical interpretation of the Arctic oscillation. The unstable solutions, obtained by a method of 3D normal ...

Abstract: Three-dimensional normal mode functions are applied to the analysis of the energetics of the general circulation during the FGGE year. The GFDL FGGE data are used for the computation of both the normal mode energetics and ...

Abstract: In this study, we carried out a quantitative heat budget analysis of the polar troposphere in and around Alaska for the winter of 1988/89. The winter was characterized by drastic temperature variations. The surface minimum ...

Abstract: Four numerical simulations of the global atmosphere for January 1979 are analyzed to study the formation of blocking in terms of Northern Hemisphere energetics. The Goddard Laboratory for Atmospheres (GLA) 4° ? 5° ...

Abstract: tmospheric blocking occurred over the Rocky Mountains at 1200 UTC 15 December 2005. The operational medium-range ensemble forecasts of the Canadian Meteorological Center (CMC), the Japan Meteorological Agency (JMA), and ...