Abstract: Consideration of flows in which the rate of change of momentum is much smaller than the Coriolis force suggests that the advected quantity momentum may be approximated by its geostrophic value but that trajectories cannot ...

Abstract: From spectral analyses of the 1° terrain heights of Gates and Nelson (1975), the representation of the earth topography by truncated series of spherical harmonics is obtained. Rhomboidal and triangular truncations at various ...

Abstract: The response of a barotropic model, linearized about a climatological 300-mb December?February time-mean flow to localized forcing, is considered. In order to aid the design of the experiments and interpretation of the ...

Abstract: The global response to tropical heating is studied by performing a time integration of a 15-level primitive equation model, starting with a basic flow maintained by a constant forcing. The direct, quasi-steady response to ...

Abstract: his manuscript revisits a study of eddy?mean flow interactions in an idealized model of a western boundary current extension jet using properties of the horizontal velocity correlation tensor to diagnose characteristics ...

Abstract: Atmospheric general circulation model experiments have been performed to investigate how the significant zonal asymmetry in the Southern Hemisphere (SH) winter storm track is forced by sea surface temperature (SST) and ...

Abstract: It is shown how to estimate the directions and relative magnitudes of Q-vectors from a map of isobars and isotherms. The divergence of this vector field represents the forcing function in the quasi-geostrophic omega-equation. ...

Abstract: The simplest example of possibly unstable Rossby wave motion is reexamined. The necessary and sufficient condition for instability is shown to be that the tendency of the, ? effect to produce different phase speeds for ...

Abstract: It has been shown previously how a transformation of coordinates applied to the primitive equations with the geostrophic momentum approximation produces the quite simple semi-geostrophic equations. Here the connection with ...

Abstract: ropical waves are generally considered to have a baroclinic structure. However, analysis of ERA-Interim and NOAA OLR data for the period 1979?2010 shows that in the equatorial and Northern Hemisphere near-equatorial regions ...