Guo, L.Lehmacher, G. A.Kudeki, E.Akgiray, A.Sheth, R.Chau Chong Shing, Jorge Luis2018-10-302018-10-302007-06-06Guo, L., Lehmacher, G. A., Kudeki, E., Akgiray, A., Sheth, R., & Chau, J. L. (2007). Turbulent kinetic energy dissipation rates and eddy diffusivities in the tropical mesosphere using Jicamarca radar data.==$Advances in Space Research, 40$==(6), 744-750. https://doi.org/10.1016/j.asr.2007.05.068index-oti2018http://hdl.handle.net/20.500.12816/3233The 50-MHz MST radar at Jicamarca Radar Observatory (JRO) can detect atmospheric turbulence on the Bragg scale of 3 m in the daytime mesosphere (∼60–85 km). Since 2002, the radar was operated for a certain number of days each year collecting 1-min Doppler spectra in four off-vertical (2.5°) beam directions and 150 m resolution. The spectral widths have been used to compute the kinetic energy dissipation rate ε due to atmospheric turbulence. A small beam broadening effect has been removed from the observed spectral widths. The daily median energy dissipation rates ε increase from 5 to 30 mW/kg between 67 and 80 km, and the eddy diffusivities increase from 3 to 20 m2/s, consistent with similar studies conducted by two other large 50-MHz radars in Japan and India. The energy dissipation rates are about the same magnitude as the ε estimates for low-latitudes from a global model and are larger than the averages from rocket observations at high-latitudes, confirming previous comparisons.application/pdfenginfo:eu-repo/semantics/restrictedAccessMST radarTurbulence in mesosphereAtmospheric Turbulenceinfo:eu-repo/semantics/articlehttp://purl.org/pe-repo/ocde/ford#1.05.01Advances in Space Researchhttps://doi.org/10.1016/j.asr.2007.05.068