Dissipation of temperature perturbations in the middle atmosphere

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Abstract

It is often observed that the stratospheric and mesospheric temperature structure undergoes transient disturbances from its averaged steady-state behavior. The causes may be traceable to gravity waves, planetary waves, solar proton and relativistic electron precipitation, etc. We examine the theoretical time behavior of the atmospheric temperature following the cessation of such heating phenomena as it relaxes toward its quiescent steady-state value. We also study the time-dependent response during a model stratospheric-warming/mesospheric-cooling event. In particular, we investigate the roles of eddy heat conduction, non-LTE cooling in the 15μm CO2 band, and an ambient vertical wind, and their relative importance as they depend upon altitude and time, in modifying temperature changes in this region. © 1981.

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Thomas, G. E. (1981). Dissipation of temperature perturbations in the middle atmosphere. Advances in Space Research, 1(12), 127–130. https://doi.org/10.1016/0273-1177(81)90426-9

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