Large-scale Rossby and drift wave clusters
Large scale drift and Rossby wave turbulence
... Introduction Drift waves in plasmas and Rossby waves in the ocean and planetary atmospheres, though unrelated at the fi rst sight, have common features in their dynamics and statistics, which at a basic ...
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Rossby wave, drift wave and zonal flow turbulence
... Figure 4.16: Zonal velocity u(y) obtained for M = 10 re-scaled with self-similar variables: u(y, t) = a(t) f (b(t)y) with a(t) = u 0 e γ q t and b(t) = e 1.85t . 4.8.3 Effect of nonlinearity M Some clear differences in ...
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Rossby wave turbulence
... amplitudes. The majority of the invariants are quite local in symbolic cluster space, involving one or only a few triads. If forcing occurs near a triad with two loose ends, energy may become trapped in it and if forcing ...
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Rossby and drift wave turbulence and zonal flows : The Charney–Hasegawa–Mima model and its extensions
... primary wave. A numerical proof is provided for an the extra invariant in Rossby and drift wave turbulence – ...the wave kinetic equation which assumes weak wave amplitudes, it ...
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THE WAVE MECHANICS OF LARGE-SCALE STRUCTURE
... Abstract. I review the basic “gravitational instability” model for the growth of structure in the expanding Universe. This model requires the existence of small initial irregularities in the density of a largely uniform ...
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Dispersive effects in Rossby-wave hydraulics
... sufficiently large perturbations ( comparable to Y 0 or 1 − Y 0 ) of sufficiently small scale (µ ∼ ...upstream wave of what would otherwise be a steady lee wavetrain, and during the formation of some ...
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The life cycle of drift wave turbulence driven by small scale instability
... The ZF saturation mechanism described in this Letter is remarkable because it is achieved entirely dynamically without the need to remove the small scale driving insta- bility or to invoke a dissipation mechanism ...
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Modulational instability of Rossby and drift waves and generation of zonal jets
... meridional Rossby waves are excited in an ambient state that is subcritical with respect to baroclinic instability or if weak baroclinic instability resulted in meridional Rossby wave-like ...
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Rossby-wave turbulence in a rapidly rotating sphere
... by Rossby waves, as predicted by Rhines (1975), and for which very little other evidence has been found ...to large scale where it is dissipated by Ekman ...few Rossby waves (which may be ...
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Nonlinear excitation of zonal flows by rossby wave turbulence
... the wave-kinetic approach to study nonlinearly coupled Rossby wave-zonal flow fluid turbulence in a two-dimensional rotating ...of Rossby wave turbulence. Short-wavelength Rossby ...
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Rossby-Haurwitz wave perturbations under tropical forcing
... RH wave embedded within a zonal flow, clearly differ- ent from the known RH wave ...the large-scale wave structures in the atmospheric circulation of ...
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The statistical dynamics of turbulent Rossby wave flow over topography
... and Rossby wave turbulence on a generalized β-plane and in the presence of a large scale flow U ...the large scale flow U ...the large scale flow U that allows the ...
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Rethinking large-scale economic modeling for efficiency: optimizations for GPU and Xeon Phi clusters
... CUDA: The CUDA version offloads the interpolation kernel to the NVIDIA Tesla P100 GPU. The scheduler uses a block size of 128, which is the closest to the ndof s per point. 10 The nno is distributed across the maximum ...
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MapReduce: Ordering and Large Scale Indexing on Large Clusters
... a large variety of problems are easily expressible as MapReduce ...to large clusters of machines comprising thousands of ...the large computational problems encountered at ...
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Large Scale Simulation on Clusters using COMSOL 4.2
... many processors are used in a parallel run, a program's speedup will be limited by its fraction of sequential code (a fraction of the code that doesn't lend itself to parallelism). T[r] ...
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A SIMPLE-MODEL OF ROSSBY-WAVE HYDRAULIC BEHAVIOR
... At early times, as shown in figure 11 (a), the flow seems to approach the hydraulically controlled solution, at least on the downstream side of the obstacle.. The bold c[r] ...
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Null modes effect in Rossby wave model
... The crucial importance of the proper introduction of normal variables in such systems is highlighted in Sect. 4. We con- sider the RHM-model as an example to which the HA can be directly applied to obtain analytical ...
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The decay of cyclonic eddies by Rossby wave radiation
... β-plane drift westward at a speed equal to an available Rossby wave phase speed, they must radiate energy and cannot, therefore, be ...the Rossby wave wake accompanying a quasi-steady ...
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Predictive analysis of a hydrodynamics application on large scale CMP clusters
... Abstract We present the development of a predictive per- formance model for the high-performance computing code Hydra, a hydrodynamics benchmark developed and main- tained by the United Kingdom Atomic Weapons Establish- ...
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Performance-aware Speculative Resource Oversubscription for Large-scale Clusters
... Resource mismatch: Current approaches leverage the cluster resource states (i.e. available idle or revocable re- sources) to perform oversubscription decisions, and do so via piggybacking on regular cluster scheduler ...
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