Atmospheric Dynamics on Venus, Jupiter, and Saturn: An Observational and Analytical Study

Details Atmospheric Dynamics on Venus, Jupiter, and Saturn: An Observational and Analytical Study Atmospheric Dynamics on Venus, Jupiter, and Saturn: An Observational and Analytical Study

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000stin...0070850b&link_type=abstract

Technical Report, NASA Ames Research Center Moffett Field, CA United States

Physics

Atmospheric Physics, Jupiter (Planet), Jupiter Atmosphere, Static Stability, Troposphere, Venus (Planet), Saturn (Planet), Galileo Probe, Temperature Sensors, Atmospheric Pressure, Parachute Descent, Momentum

Scientific paper

Determining the static stability of Jupiter's atmosphere below the visible cloud levels is important for understanding the dynamical modes by which energy and momentum are transported through Jupiter's deep troposphere. The Galileo Probe Atmospheric Structure Investigation (ASI) employed pressure and temperature sensors to directly measure these state variables during the parachute-descent phase, which started at a pressure (p) of 0.4 bars and ended at p= 22 bars. The internal temperature of the probe underwent large temperature fluctuations which significantly exceeded design specifications. Corrections for these anomalous interior temperatures have been evaluated based on laboratory data acquired after the mission using the flight spare hardware. The corrections to the pressure sensor readings was particularly large and the uncertainties in the atmospheric pressures derived from the p sensor measurements may still be significant. We have sought to estimate the formal uncertainties in the static stability derived from the p and T sensor measurements directly and to devise means of assessing the static stability of Jupiter's atmosphere which do not rely on the p sensor data.

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