Estimation of eddy momentum and thermal diffusivities from lidar measured gravity wave momentum and heat fluxes

Details Estimation of eddy momentum and thermal diffusivities from lidar measured gravity wave momentum and heat fluxes Estimation of eddy momentum and thermal diffusivities from lidar measured gravity wave momentum and heat fluxes

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa54a..06l&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA54A-06

Physics

3334 Middle Atmosphere Dynamics (0341, 0342), 3337 Global Climate Models (1626, 4928), 3360 Remote Sensing, 3384 Acoustic-Gravity Waves

Scientific paper

Momentum and heat fluxes derived from high-resolution lidar measurements of wind and temperature in the mesopause region at Starfire Optical Range (35N, 106W) were used to derive eddy momentum and thermal diffusivities based on linear parameterization theory. Both seasonal and altitude variation of these diffusion coefficients were derived. It is found that both coefficients vary with season with minimum in equinoxes and maximum in solstices. They also vary with altitude, with kinetic diffusion increasing and thermal diffusion decreasing from 85 to 100 km.

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