The Microwave Opacity of Hydrogen Sulfide with Applications to the Trophospheric Vertical Structure of the Jovian Planets.

Details The Microwave Opacity of Hydrogen Sulfide with Applications to the Trophospheric Vertical Structure of the Jovian Planets. The Microwave Opacity of Hydrogen Sulfide with Applications to the Trophospheric Vertical Structure of the Jovian Planets.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phdt.........5d&link_type=abstract

Thesis (PH.D.)--GEORGIA INSTITUTE OF TECHNOLOGY, 1995.Source: Dissertation Abstracts International, Volume: 56-07, Section: B, p

Computer Science

1

Scientific paper

Observations of the microwave and millimeter-wave properties of Jupiter, Saturn, Uranus and Neptune (the Jovian planets) are crucial for understanding the composition and structure of their atmospheres. The utility of centimeter and millimeter wavelength measurements stems from their ability to probe altitudes ranging from the lowest cloud decks to the very top of the tropospheric region. This research has conducted laboratory measurements of the microwave absorption and refractivity of hydrogen sulfide (H _2S) in environments simulating different regions of a Jovian-type atmosphere. These data have been to used to develop an accurate formalism to compute H _2S absorptivity as a continuous function of frequency, temperature and composition. A new thermochemical and radiative transfer model, utilizing the new H _2S formalism, has been developed. The new model incorporates absorption due to H_2 S, NH_3, PH_3 , H_2O, CO, H_2 and clouds, as well as scattering due to cloud particles. This computer model allows radio occultation results and radio telescope measurements to be compared with theoretical models under varying conditions, in order to constrain our understanding of the tropospheric vertical structure of the outer planets. Based on the modeling results, aspects of a mission to Neptune which would resolve the compositional and temperature structure of the troposphere of that planet are discussed. This work addresses high sensitivity microwave measurements, atmospheric modeling and planetary science, and contributes to the body of knowledge that provides us with clues into the origins of our solar system.

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