Lower Atmospheric Gravity Wave Impacts on the Thermosphere

Details Lower Atmospheric Gravity Wave Impacts on the Thermosphere Lower Atmospheric Gravity Wave Impacts on the Thermosphere

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa21b1554g&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA21B-1554

Other

0358 Thermosphere: Energy Deposition (3369), 3334 Middle Atmosphere Dynamics (0341, 0342), 3367 Theoretical Modeling, 3369 Thermospheric Dynamics (0358)

Scientific paper

Gravity waves are a significant source of mass, momentum and energy in the mesosphere/lower- thermosphere regions. But little direct evidence is available for waves in the middle- and upper- thermosphere. A new 2-D non-hydrostatic, non-isothermal, gravity wave model has been developed, which allows lower atmospheric gravity waves produced via thunderstorms, flow over local topography, geostrophic adjustment, or wave-wave interactions, to be coupled into a global thermosphere model. The current study- uses the 2-D model to determine the characteristics of the gravity waves at thermospheric altitudes using realistic temperature profiles determined from atmospheric heating and cooling, along with self-consistently calculated thermal diffusion and viscosity. The temperature, velocity, and densities computed are total quantities, rather than just the perturbation quantities.

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