Wind and temperature effects on F-region medium-scale gravity waves estimated using a multi-layer atmospheric model.

Details Wind and temperature effects on F-region medium-scale gravity waves estimated using a multi-layer atmospheric model. Wind and temperature effects on F-region medium-scale gravity waves estimated using a multi-layer atmospheric model.

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jatp...58.1259w&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, Vol. 58, No. 11, p. 1259 - 1273

Physics

2

Earth Atmosphere: Models, Earth Atmosphere: Gravity Waves, Earth Thermosphere: Gravity Waves, Earth Ionosphere: Gravity Waves, Earth Ionosphere: F Region

Scientific paper

The paper presents results from a study of the propagation of gravity waves through a layered atmosphere in which the thermospheric wind and temperature are derived from a three-dimensional time-dependent model. The analysis has been carried out for a range of wave speeds and periods, and for a range of times, seasons and propagation azimuths. Results suggest that a significant diurnal variation in the transmission coefficient for waves propagating through the thermosphere exists with seasonally dependent maxima. Transmission increases for increasing wave period up to about 50 min, after which it remains approximately constant. Maximum transmission occurs for wave phase speeds around 200-250 m/s and falls to zero for speeds less than about 100 m/s. An exception to this rule occurs for waves with periods less than 40 min and speeds less than 50 m/s for which significant transmission appears to be theoretically possible.

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