On Latitudinal Dependence of Secular Variations Induced by a Dissipating Gravity Wave Packet

Details On Latitudinal Dependence of Secular Variations Induced by a Dissipating Gravity Wave Packet On Latitudinal Dependence of Secular Variations Induced by a Dissipating Gravity Wave Packet

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa51a0497h&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SA51A-0497

Physics

0300 Atmospheric Composition And Structure, 0310 Airglow And Aurora, 0317 Chemical Kinetic And Photochemical Properties, 0341 Middle Atmosphere: Constituent Transport And Chemistry (3334)

Scientific paper

A time evolution of the response of the minor species and the OH airglow to a dissipating gravity wave packet can be simulated with a 2-dimensional, time-dependent, fully nonlinear OH model developed recently by Huang and Hickey [2002]. The wave packet was simulated using a spectral full-wave model described by Hickey et al. [2000] and Hickey and Walterscheid [2001], and then input to a 2-D chemistry model to study the secular variation of the minor species and OH nightglow. Previous studies of OH nightglow at high latitudes show strong secular variations of minor species and also of the OH brightness induced by wave transience and dissipation [Huang and Hickey, 2002]. We plan to employ the same models to study the secular variations of minor species and the OH nightglow at mid- and low-latitudes. The latitudinal dependence of the secular variations can thus be deduced. Satellite observations reveal much larger OH brightness at mid-latitudes compared to those at high and low latitudes. Therefore, we expect greater secular variations induced by the same wave packet at mid-latitudes.

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