Planetary Atmosphere Dynamics and Radiative Transfer

Details Planetary Atmosphere Dynamics and Radiative Transfer Planetary Atmosphere Dynamics and Radiative Transfer

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996stin...9622311a&link_type=abstract

Technical Report, Idaho Univ. Moscow, ID United States Dept. of Electrical Engineering.

Astronomy and Astrophysics

Astrophysics

Radiative Transfer, Algorithms, Applications Programs (Computers), Computer Programming, Energy Transfer, Venus Atmosphere, Zonal Flow (Meteorology), Wind (Meteorology), Astrophysics, Jupiter Atmosphere, Aerosols, Wind Measurement, Density Distribution, Data Reduction, Galileo Probe, Mixing Ratios, Temperature Distribution, Particle Size Distribution, Radio Tracking, Galileo Project

Scientific paper

This research program has dealt with two projects in the field of planetary atmosphere dynamics and radiative energy transfer, one theoretical and one experimental. The first project, in radiative energy transfer, incorporated the capability to isolate and quantify the contribution of individual atmospheric components to the Venus radiative balance and thermal structure to greatly improve the current understanding of the radiative processes occurring within the Venus atmosphere. This is possible by varying the mixing ratios of each gas species, and the location, number density and aerosol size distributions of the clouds. This project was a continuation of the work initiated under a 1992 University Consortium Agreement. Under the just completed grant, work has continued on the use of a convolution-based algorithm that provided the capability to calculate the k coefficients of a gas mixture at different temperatures, pressures and spectral intervals from the separate k-distributions of the individual gas species. The second primary goal of this research dealt with the Doppler wind retrieval for the Successful Galileo Jupiter probe mission in December, 1995. In anticipation of the arrival of Galileo at Jupiter, software development continued to read the radioscience and probe/orbiter trajectory data provided by the Galileo project and required for Jupiter zonal wind measurements. Sample experiment radioscience data records and probe/orbiter trajectory data files provided by the Galileo Radioscience and Navigation teams at the Jet Propulsion Laboratory, respectively, were used for the first phase of the software development. The software to read the necessary data records was completed in 1995. The procedure by which the wind retrieval takes place begins with initial consistency checks of the raw data, preliminary data reductions, wind recoveries, iterative reconstruction of the probe descent profile, and refined wind recoveries. At each stage of the wind recovery consistency is checked and maintained between the orbiter navigational data, the radioscience data, and the probe descent profile derived by the Atmospheric Instrument Team. Preliminary results show that the zonal winds at Jupiter increase with depth to approximately 150 m/s.

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