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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S. Brandejs: Úvod do početní předpovědi počasí. Travaux Inst. Géophys. Acad. Tchécosl. Sci. No 61, Geofysikální sborník 1957, NČSAV, Praha 1958.
D. Brunt: Physical and Dynamical Meteorology. 1. vydání Cambridge 1934.
W. H. Dines: The Vertical Distribution of Temperature in the Work Required to Alter it. Quart. Jour. R. Meteor. Soc. 167 (1913), 183.
L. S. Gandinakol.: Osnovy dinamičeskoj meteorologii. Gidromet. izdat., Leningrad 1955.
F. Pechala: Linear Theory of Compensation of Non-Equilibrium States in the Earth's Atmosphere. Rozpravy NČSAV, řada mat. a přírod. věd, ročník 94, sešit 7, Academia Praha 1984.
M. Škoda, O. Zikmunda: Objektivní metody v synoptické meteorologii. Hydrometeorologický ústav, Praha 1966.
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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