The model describes the neutral densities and temperature in the Venus thermosphere in the altitude range 140 km to 250 km. It is based on Pioneer Venus Orbiter (PVO) data from the Orbiter Neutral Mass Spectrometer (ONMS) and on some density data from the entry probe. The model formulation relies on modified Bates temperature profiles and the related diffusive equilibrium density profiles. There are less than 15 coefficients per individual density model.
Availability: (1) from NSSDC's Request Office on tape or diskette; (2) retrievable from NSSDC's anonymous FTP site.
NSSDC ID: MI-62A
A. E. Hedin, H. B. Niemann, W. T. Kasprzak, and A. Seiff, Global Empirical Model of the Venus Thermosphere, J. Geophys. Res. 88, 73, 1983.
NASA Official: Dr. Robert McGuire, Head of the Space Physics Data Facility