# Prof. Nedjeljka Žagar: Atmospheric energy spectra and traditional approximations

Source: Monday physics colloquium

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Povzetek:

**Atmospheric energy spectra and traditional
approximations **

Prof. Nedjeljka Žagar

*Faculty of Mathematics and Physics, University of Ljubljana *

Much of our understanding of atmospheric dynamics comes from considering the linearized versions of the 3-dimensional equations for the conservation of atmospheric momentum, energy and mass. Eigensolutions of the linearized equations separate the circulation in two kinds of oscillations, the quasi-geostrophic waves and the inertia-gravity waves. Energetics in the two regimes has traditionally been discussed by using different sets of simplified 2-dimensional equations. I will discuss traditional assumptions used to derive simplified equations and present a 3-dimensional picture of the global atmospheric energy spectrum.