A model of the Venus atmosphere from radio, radar, and occultation observations

Details A model of the Venus atmosphere from radio, radar, and occultation observations A model of the Venus atmosphere from radio, radar, and occultation observations

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234..733m&link_type=abstract

Astrophysical Journal, Part 1, vol. 234, Dec. 1, 1979, p. 733-745.

Astronomy and Astrophysics

Astronomy

8

Atmospheric Models, Occultation, Radar Astronomy, Radio Astronomy, Venus Atmosphere, Carbon Dioxide, Graphs (Charts), Mariner Spacecraft, Radar Measurement, Radio Interferometers, Tables (Data), Venus, Atmosphere, Occultations, Observations, Models, Radar, Parameters, Brightness Temperature, Radar Echos, Mathematical Models, Spectrum, Radius, Wavelengths, Microwaves, Pressure, Temperatures, Interferometry, Opacity, Data, Dielectric Properties, Absorption, Radio Astronomy

Scientific paper

A model is presented of the atmosphere and surface of Venus which best fits in the least-squares sense the available radio-brightness, radar cross-section, radio interferometric, and Mariner 5 and 10 radio occultation observations. The determinations of the radius of the planet obtained by others from radar time-delay measurements are included in the data set. The values of the adjusted parameters are: molar fraction of CO2 = 95 plus or minus 3%; fraction of combined nitrogen and argon = 5 plus or minus 3%; total atmospheric opacity at a wavelength of 1 cm = 19.4 plus or minus 1.3; mean radius of the surface = 6050.7 plus or minus 0.8 km; mean dielectric constant of the surface = 4.1 plus or minus 0.2, and percentage of total opacity due to chemical species other than CO2 = 45 plus or minus 12. The model temperature and pressure at the mean surface are 755 K and 91.4 atm, respectively.

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