Sentences with word «barotropic»

Some studies suggest a substantial eddy influence on the mean barotropic flow based on the interaction of a statistical eddy field with bottom topography (Eby and Holloway, 1994; Merryfield and Holloway, 1997).

Assuming small amplitude waves and scale separation and that the dynamics of barotropic storm tracks dominate the problem, Doppler correction would not be necessary.

Petoukhov et al. (34) showed that these patterns could result from the trapping of free quasistationary barotropic Rossby waves with zonal wave numbers k equal or close to the three integer values indicated above, within the predominantly zonally oriented midlatitude waveguides.

Enstrophy diagnostics show that when the condition of a negative vorticity gradient is met, the effects of barotropic instability are indeed more prevalent.

In contrast to these fast traveling waves, the quasistationary extratropical barotropic free waves with zonal wave numbers 6 to 8 are normally weak, with a magnitude of the meridional wind velocity less than 1.5 — 2.5 m ⋅ s − 1 (25, 34, 35, 39, 40).

Quinn, K. J. and R. M. Ponte (2012), High frequency barotropic ocean variability observed by GRACE and satellite altimetry, Geophys.

Previous theoretical and model - based studies of the relationship between ocean bottom pressure (pb) and sea level (ζ) suggest primarily barotropic variability at mid to high latitudes for scales greater than a few hundred kilometers and periods less than a few months.

Barotropic Rossby waves have the highest speeds and do not vary vertically.

Both Lee and Swanson et al. find that barotropic effects may be of importance for the localization of storm tracks though they disagree on the strength of the effect (Swanson et al. 1997; Chang et al. 2002).

Marston, J. B., E. Conover, and T. Schneider, 2008: Statistics of an unstable barotropic jet from a cumulant expansion.

Although there are other factors controlling the sea height anomaly, it is assumed here that most of its variability is due to changes in the depth of the main thermocline and of barotropic origin.

Barotropic stability.

Barotropic flow on a beta - plane and Rossby waves.

Another highly idealized theory is a barotropic storm track which for small amplitude waves can be approximated by WKB theory (Lee 1995; Swanson et al. 1997).

There are two types of Rossby waves, barotropic and baroclinic.

Pierrehumbert RT 1983: Bounds on the growth of perturbations to non-parallel steady flow ont he barotropic beta plane.

Pierrehumbert RT, and P. Malguzzi 1984: Forced coherent structures and local multiple equilibria in a barotropic atmosphere.

QRA can be regarded as an extension of the Haurwitz - type mechanism (42) of a strong increase in the amplitude of the midlatitude atmospheric barotropic wave system response to stationary external barotropic thermal forcing, with a spatial frequency m approaching the natural stationary spatial frequency k of the wave system, to the case of external barotropic thermal and orographic forcing under a latitude - dependent u ¯ and an integer m over the midlatitude belt on the spherical Earth.

Burrows D. A., G. Chen and L. Sun (January 2017): Barotropic and Baroclinic Eddy Feedbacks in the Midlatitude Jet Variability and Responses to Climate Change - Like Thermal Forcings.

The results provide, for the first time, global observational evidence for the barotropic nature of large - scale ocean variability at mid and high latitudes.

By contrast, in the presence of oceanlike stratification, kinetic energy in high baroclinic modes transfers intermediately to the first baroclinic mode, whence it transfers inefficiently (and incompletely) to the barotropic mode.

The parameterization requires knowledge of the topography, stratification, and the remote forcing, either barotropic or baroclinic.

It is shown how such stirring, as represented by a simple stochastic forcing in a barotropic model, leads to a variability in the zonal flow via a variability in the eddy momentum flux convergence and to patterns similar to those observed.

Specifically, with uniform stratification, energy in high baroclinic modes transfers directly, quickly (within a few eddy turnaround times), and almost completely to the barotropic mode.