Laboratory measurements of microwave absorption from gaseous atmospheric constituents under conditions for the outer planets

Details Laboratory measurements of microwave absorption from gaseous atmospheric constituents under conditions for the outer planets Laboratory measurements of microwave absorption from gaseous atmospheric constituents under conditions for the outer planets

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986joat.conf..111s&link_type=abstract

In NASA. Goddard Inst. for Space Studies The Jovian Atmospheres p 111-116 (SEE N87-17598 09-91)

Astronomy and Astrophysics

Astronomy

Absorptivity, Atmospheric Composition, Microwave Emission, Radiation Absorption, Research Facilities, Abundance, Ammonia, Hydrogen Atoms, Methane, Radio Astronomy, Radio Occultation, Water

Scientific paper

Quite often the interpretive work on the microwave and millimeter-wave absorption profiles, which are inferred from radio occultation measurements or radio astronomical observations of the outer planets, employs theoretically-derived absorption coefficients to account for contributions to the observed opacity from gaseous constituents. Variations of the actual absorption coefficients from those which are theoretically derived, especially under the environmental conditions characteristic of the outer planets, can result in significant errors in the inferred abundances of the absorbing constituents. The recognition of the need to make laboratory measurements of the absorptivity of gases such as NH3, CH4, and H2O in a predominantly H2 atmosphere, under temperature and pressure conditions simulating the outer planets' atmospheres, and at wavelengths corresponding to both radio occultation and radio astronomical observations, has led to the development of a facility capable of making such measurements at Georgia Tech. The laboratory measurement system, the measurement techniques, and the proposed experimental regimen for Winter 1985 are described.

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