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Title: Laboratory evaluation and application of microwave absorption properties under simulated conditions for planetary atmospheres. Semiannual Status Report No. 15, 1 Nov. 1990 - 30 Apr. 1991

Technical Report ·
OSTI ID:5392144

Laboratory measurements of microwave and millimeter wave properties of the simulated atmosphere of the outer planets and their satellites has continued. One of the focuses is on the development of a radiative transfer model of the Jovian atmosphere at wavelengths from 1 mm to 10 cm. This modeling effort led to laboratory measurements of the millimeter wave opacity of hydrogen sulfide (H{sub 2}S) under simulated Jovian conditions. Descriptions of the modeling effort, the Laboratory experiment, and the observations are presented. Correlative studies of measurements with Pioneer-Venus radio occultation measurements with longer wavelength emission measurements have provided new ways for characterizing temporal and spatial variations in the abundance of both gases H{sub 2}SO{sub 4} and SO{sub 2}, and for modeling their roles in the subcloud atmosphere. Laboratory measurements were conducted on 1.35 cm (and 13 cm) opacity of gaseous SO{sub 2} and absorptivity of gaseous SO{sub 2} at the 3.2 mm wavelength under simulated Venus conditions. Laboratory measurements were completed on millimeter wave dielectric properties of liquid H{sub 2}SO{sub 4}, in order to model the effects of the opacity of the clouds of Venus onto millimeter wave emission spectrum.

Research Organization:
Georgia Inst. of Tech., Atlanta, GA (United States)
OSTI ID:
5392144
Report Number(s):
N-91-22057; NASA-CR-188096; NAS-1.26:188096; CNN: NAGW-533
Country of Publication:
United States
Language:
English