Laboratory measurements of the microwave properties of H2S under simulated Jovian conditions with an application to Neptune

Details Laboratory measurements of the microwave properties of H2S under simulated Jovian conditions with an application to Neptune Laboratory measurements of the microwave properties of H2S under simulated Jovian conditions with an application to Neptune

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994icar..109..352d&link_type=abstract

Icarus (ISSN 0019-1035), vol. 109, no. 2, p. 352-366

Computer Science

19

Abundance, Environment Simulation, Hydrogen Sulfide, Jupiter Atmosphere, Microwave Absorption, Brightness Temperature, Computerized Simulation, Neptune Atmosphere, Opacity, Voyager 2 Spacecraft

Scientific paper

H2S opacity may significantly affect the brightness temperatures of Uranus and Neptune due to possible depletion of ammonia in the tropospheres of those planets (de Pater et al. 1991). Though the rotational line centers of H2S are in the millimeter wavelengths region, significant absorption is also present at centimeter wavelengths due to pressure broadening of the lines. Accordingly, the properties of H2S under Jovian conditions have been measured in order to constrain further the constituents' abundances on these planets. These absorptivity measurements show values that are significantly greater than values predicted by the Van Vleck-Weisskopf models traditionally used at centimeter wavelengths. In order to better model the opacity due to H2S under Jovian conditions a Ben-Reuven lineshape formalism has therefore been developed and is presented. This formalism provides a possible constraint on the relative abundances of H2S and NH3 on Neptune based on Voyager 2 radio occultation results (Lindal 1992).

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