Computer Science – Sound
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982icar...52..335w&link_type=abstract
(International Conference on the Venus Environment, Palo Alto, CA, Nov. 1-6, 1981.) Icarus, vol. 52, Nov. 1982, p. 335-345. NASA
Computer Science
Sound
14
Atmospheric Sounding, Atmospheric Turbulence, Pioneer Venus Spacecraft, Radio Occultation, Venus Atmosphere, Wind Shear, Atmospheric Temperature, Energy Dissipation, Refractivity, Scintillation, Turbulent Diffusion
Scientific paper
Pioneer Venus data on the morphology of the 45 and 65 km altitude scintillation regions were analyzed. A poleward decrease in the 65 km scintillations was detected, together with a peak at 60-70 deg latitude. Poleward increases in refractive index fluctuations and temperature fluctuations from previous observations displayed a peak near 70 deg latitude, with greater turbulence near the pole. The same fluctuations were an order of magnitude lower at 45 km altitude, with turbulence considerably lower than at 60 km. The favorable comparison of the scintillation measurements with the in-situ velocity and temperature measurements validates the radio measurement technique as a probe of small scale turbulence in a planetary atmosphere. Particular success is noted in identification of small scale temperature fluctuations as a result of shear generated turbulence.
Armstrong John W.
Kliore Arvydas J.
Woo Richard
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