Physics
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978icar...35..410h&link_type=abstract
Icarus, vol. 35, Sept. 1978, p. 410-435. Research supported by the Norges Teknisk-Naturvitenskapelige Forskningsrad;
Physics
Atmospheric Pressure, Atmospheric Temperature, Atmospheric Turbulence, Doppler Effect, Planetary Atmospheres, Radio Occultation, Atmospheric Effects, Atmospheric Refraction, Pressure Distribution, Radio Scattering, Refractivity, Scintillation, Temperature Profiles, Turbulence Effects
Scientific paper
The nature and magnitude of turbulence-induced errors in atmospheric profiles derived from Doppler measurements made during radio occultations are investigated. It is found that turbulence in planetary atmospheres induces both fluctuating and systematic errors in derived profiles, but the errors of both types are very small. Consideration of the occultation of Mariner 10 by Venus and of the Pioneer occultations by Jupiter shows that the rms fractional errors in the atmospheric profiles derived from these observations were less than 0.01 in both temperature and pressure, while the fractional systematic errors were typically of the order of 1 millionth. The extent to which atmospheric profiles derived from radio and optical intensity measurements are affected by turbulence is also examined. The results indicate that turbulence in planetary atmospheres has only a marginal effect on derived profiles in the weak-scattering limit and that the turbulence-induced errors in this case are always much larger than the corresponding errors in profiles derived from radio Doppler measurements.
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