Periodicity of atmospheric phenomena occurring in the extreme South of Brazil

We suggest a way of rationalizing an intra-seasonal oscillations (IOs) of the Earth atmospheric flow as four meteorological relevant triads of interacting planetary waves, isolated from the system of all the rest planetary waves. Our model is independent of the topography (mountains, etc.) and gives a natural explanation of IOs both in the North and South Hemispheres. Spherical planetary waves are an example of a wave mesoscopic system obeying discrete resonances that also appears in other areas of physics.Introduction. Concept of mesoscopic systems most often appears in condensed matter physics, e.g, in studying properties of superconductors on a scale comparable with that of the Cooper pairs[1], of miniaturized transistors on a computer chip, of disordered (glassy, granular) systems, when self-averaging is inefficient and fluctuations or the system prehistory become important. Similar situation occurs also in various natural phenomena -from wave turbulent systems in the Ocean [2] and Atmosphere, when wave lengthes are compatible with the Earth radius [3], to medicine [4], and even in sociology and economics, when finite size of a system (population, sociological group, market) becomes important [5]. Mesoscopic regimes are at the frontier between detailed, dynamical and statistical, self-averaging description of systems. Important observation for finite-size, weakly-decaying wave systems was made in [6]: discrete spacial-time resonances form small isolated clusters of interacting modes without energy exchange between the clusters. Clearly, there is exists relatively short, "threshold" wave, involving into the cluster with size large enough to "penetrate" into region of very short waves, where statistical description, that ignores the resonance discreetness, is valid.

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Periodicity of atmospheric phenomena occurring in the extreme South of Brazil

Cited by 2 publications

References 17 publications

Medium and long period ground oscillatory pattern inferred by borehole tiltmetric data: New perspectives for the Campi Flegrei caldera crustal dynamics

Medium and long period ground oscillatory pattern inferred by borehole tiltmetric data: New perspectives for the Campi Flegrei caldera crustal dynamics

Model of Intraseasonal Oscillations in Earth’s Atmosphere

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