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Superadiabatic Excess and Gravity Wave Saturation

J. WeinstockAeronomy Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado

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Abstract

Attention is called to a recent calculation of the superadiabatic excess—the ratio of wave amplitude at saturation to wave amplitude at convective instability threshold—caused by a saturated gravity wave. (This excess is also referred to as the degree of supersaturation). The implications of this excess for linear saturation by convective instability are pointed out.

Errors and misprints in the recent calculation are also pointed out and corrected.

Abstract

Attention is called to a recent calculation of the superadiabatic excess—the ratio of wave amplitude at saturation to wave amplitude at convective instability threshold—caused by a saturated gravity wave. (This excess is also referred to as the degree of supersaturation). The implications of this excess for linear saturation by convective instability are pointed out.

Errors and misprints in the recent calculation are also pointed out and corrected.

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