Results of radio occultation of the neutral atmosphere of Venus and bistatic radar determination of surface relief with the aid of the Venera 9 and 10 satellites

Details Results of radio occultation of the neutral atmosphere of Venus and bistatic radar determination of surface relief with the aid of the Venera 9 and 10 satellites Results of radio occultation of the neutral atmosphere of Venus and bistatic radar determination of surface relief with the aid of the Venera 9 and 10 satellites

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977svphu.123..697k&link_type=abstract

Uspekhi Fizicheskikh Nauk, vol. 123, Dec. 1977, p. 697, 698. In Russian.

Physics

Radar Measurement, Radio Occultation, Satellite Observation, Venera Satellites, Venus Atmosphere, Atmospheric Pressure, Atmospheric Temperature, Temperature Gradients, Topography

Scientific paper

In radio occultation experiments conducted on the Venusian atmosphere with the Venera 9 and 10 satellites, three regions of approximatelly constant temperature gradient were observed in the night-side atmosphere. At altitudes 43-50 km, the temperature gradient of about 9.8 K/km is close to a dry adiabatic gradient for a CO2 atmosphere. Transition from a dry to a moist adiabatic atmosphere occurred at about 59 km at a temperature of about 270 K. A regular nightside minimum of about 166 K is observed at around 88 km. Three regions of constant temperature gradient are also observed in the dayside atmosphere. Temperature inversions are noted at altitudes 62-72 km. Distributions of relative relief heights and near-surface pressure for two regions are given.

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