Abstract
AbstractWe investigate gravity wave‐induced airglow intensity variations of the OH(8,3), O2(0,1) atmospheric band, and O(1S) greenline emissions in the mesosphere/lower thermosphere (MLT) region with two two‐dimensional, time‐dependent, nonlinear models—an OH Chemistry‐Dynamics model and a Multiple Airglow Chemistry‐Dynamics model. Our simulation results of the wave effects by a small‐scale 30 km wave packet show that it induces an ~22% secular increase in the OH(8,3) airglow intensity, a 30% increase in the O2(0,1) atmospheric band, and a 33% increase in the O(1S) greenline. The largest wave‐induced airglow intensity fluctuation amplitude is seen in the OH(8,3) emission (~2.4%), followed by the O2(0,1) atmospheric band and O(1S) greenline with comparable maximum wave‐induced airglow intensity fluctuation amplitudes of 1%. Our study also shows that the production of atmospheric bands and O(1S) strongly depends on the rate coefficients in the three‐body recombination reactions.
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