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An Energy Budget for a Layer of Stratospheric CAT


  • John A. Dutton


The energy budget of a patch or layer of severe CAT encountered on one ofthe HICAT flights is analyzed. The shear feeding of energy, the buoyant extraction of energy, and the frictional dissipation are considered, and it is found that the budget balances within about 8% of the total rate of shear production. The cospectra that reveal the wavenumber decomposition of the rates of energy exchange are compared with the spectra for each component.The marked lapses from the spectral behavior expected in isotropic turbulence are in agreement with the calculated spectral fluxes of energy.

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