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Fundamental energy relations in the theory of compensation of non-equilibrium states in the earth's atmosphere

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Summary

The paper presents, in a condensed form, the fundamentals of global atmospheric energetics that have a bearing on the linear theory of compensation of non-equilibrium states in the Earth's atmosphere. The author introduces a new coordinate system with the vertical coordinate φ*=Z*/T*, which suits global atmospheric energetice.

The relation between the energetics of the atmospheric system as a whole and the „mean energetics level“ (MEL) is shown. Contrary to what has been assumed so far, it is proved that this level is neither an isopycnic level nor a physical surface, where ∂ϱ*/∂t=0 applies everywhere.

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Abbreviations

x, y, z :

space coordinates in thez-system

x, y, φ :

space coordinates in the φ-system

t :

time

p, T, г :

pressure, thermodynamic temperature and air density

p*, T*,г :

pressure, temperature, density and geopotential on the mean energy level

g :

acceleration of the Earth's gravity

c p,c v,R:

specific temperature under constant pressure, volume and specific gas constant

κ = c p/c v :

Poisson's constant

E k,Ev,Ep :

kinetic, internal and potential energies of the atmospheric system

r'(x,y):

correction function to inhomogeneous atmosphere

v, v n :

magnitude of motion velocity, magnitude of the normal component of velocity

O, S, S 0 :

volume of the whole atmospheric system, surface limiting volumeO and the Earth's surface

Z S :

height of surfaceS

β:

arbitrary scalar quantity

H,г :

horizontal differential operators in thez- andp-systems

References

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Dedicated to Corresponding Member Vojtěch Vítek, Director of the Institute of Physics of the Atmosphere of the Czechoslovak Academy of Sciences, at the occasion of his sixtieth birthday.

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Pechala, F. Fundamental energy relations in the theory of compensation of non-equilibrium states in the earth's atmosphere. Stud Geophys Geod 33, 391–404 (1989). https://doi.org/10.1007/BF01637692

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  • DOI: https://doi.org/10.1007/BF01637692

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