On the importance of the purely gravitationally induced density, pressure, and temperature variations in gravity waves - Their application to airglow observations

Details On the importance of the purely gravitationally induced density, pressure, and temperature variations in gravity waves - Their application to airglow observations On the importance of the purely gravitationally induced density, pressure, and temperature variations in gravity waves - Their application to airglow observations

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.4103m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, April 1, 1990, p. 4103-4111.

Physics

17

Airglow, Atmospheric Circulation, Atmospheric Models, Gravity Waves, Temperature Distribution, Vertical Distribution

Scientific paper

The degree to which gravity waves (GWs) are subject to purely gravitationally induced compressions (GICs) and expansions from altitude changes of a given parcel of air and the degree to which they are caused only by the acoustic component of gravity waves are analytically investigated. The results appear to show that, for small-scale GWs, the GIC approximation is very good to above 95 percent in temperature and density fluctuations. The approximation seems to be applicable to many of the observed midaltitude airglow data. Quick estimates and simple formulas for GW parameters such as height variations and kinetic energy density may be immediately obtained from measurements of temperature variations.

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