Prof. Nedjeljka Žagar: Atmospheric energy spectra and traditional approximations
Source: Monday physics colloquium
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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.