Other
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa53a1145g&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SA53A-1145
Other
3332 Mesospheric Dynamics, 3379 Turbulence (4490)
Scientific paper
The MST radar at Jicamarca Radar Observatory (JRO) is a powerful radar that can detect atmospheric turbulence on the Bragg scale of 3 m in the daytime mesosphere (60-85 km). Since 2002, the radar has been operated for a few days each year in this mode, collecting 1 minute Doppler spectra in 4 beam directions and 150 m resolution. The spectral widths have been used to compute the kinetic energy dissipation rate ɛ and eddy diffusivity K due to atmospheric turbulence. A small contamination due to beam broadening (beamwidth 0.7°) has been removed. For most days, ɛ values of 1-10 mW/kg increase with height consistent with the results from other VHF radars. The variability during each day is large. Turbulent dissipation rates for individual layers and the day-to-day variability are discussed in relationship to the observed wind shear.
Guo Li
Kudeki Erhan
Lehmacher Gerald
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