OH-asterisk (7-5) Meinel band dayglow and nightglow measured by the SME limb scanning near infrared spectrometer - Comparison of the observed seasonal variability with two-dimensional model simulations

摘要: Seasonal variations of the OH-asterisk (7-5) mesospheric hydroxyl emission at 1.89 microns observed by SME near-IR spectrometer are compared with theoretical predictions a two-dimensional dynamical/chemical model. The good agreement found low latitudes for both dayglow and nightglow provides support model assumption that breaking gravity waves induce seasonal latitudinal in diffusion. behavior atomic hydrogen upper mesosphere (related to vertical transport) and/or uncertainties OH Meinel band parameters proposed as possible explanations discrepancy noted between observational data middle latitudes.