Internal-Gravity-Wave Interactions in the Presence of Localized Chemical Heating in the Atmosphere
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The dynamical processes in the atmosphere and atmospheric chemistry are coupled and have an impact on each other. The heating that results from chemical constituents affect internal gravity waves. Internal gravity waves, on the other hand, influence the distribution of a chemical in the atmosphere. These effects of gravity waves and chemical heating are the focus of this thesis.We investigate analytical solutions of different forms of the chemical transport equation. We also describe numerical methods and show numerical results for the chemical transport equation. We study the effect of gravity waves on the chemical distribution analytically and numerically. The numerical results showing the effect of gravity waves on the distribution of the chemical are consistent with the analytical observations. The wave-induced mean flow resulting from nonlinear gravity wave interactions lead to modification of the distribution of the chemical.We consider a configuration where gravity wave equations are coupled with the chemical transport equation. We carry out linear and weakly nonlinear analytical investigations to find the effect of the chemical heating on the gravity waves. We also carry out numerical investigations for the coupled equations and show numerical results. It is found that heating due to the chemical has a significant effect on the gravity waves, especially when the chemical is centred at the critical level. These numerical results are in general agreement with the analytical observations we obtain.
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Copyright © 2019 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 2019
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