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Submillimeter and millimeter observations of jupiter

Griffin, Matthew Joseph ORCID:, Ade, Peter A. R. ORCID:, Orton, G. S., Robson, E. I., Gear, Walter Kieran ORCID:, Nolt, I. G. and Radostitz, J. V. 1986. Submillimeter and millimeter observations of jupiter. Icarus 65 (2-3) , pp. 244-256. 10.1016/0019-1035(86)90137-5

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We report narrowband photometry of the Jovian disk in 10 passbands covering the range from 0.35 to 3.3 mm wavelength. Absolute calibration was referenced to Mars. The derived brightness temperature spectrum is analyzed in the context of existing contraints on the atmospheric temperature structure and composition from ground-based studies at shorter wavelengths and from various spacecraft measurements. Our results for wavelengths between 0.35 and 0.45 mm suggest that the radiances can be matched by models which include NH3 ice particles which are between 30 and 100 μm in size, regardless of the scale height characterizing the cloud. It is difficult however, to model the relatively cool observations longward of 0.7 mm unless additional absorbers are assumed in the atmosphere or a different NH3 lineshape is assumed. If the absolute calibration scale were increased by 5%, the results would be fit by a clear atmosphere (or a small particle cloud) model, with no need to invoke additional absorption in the Jovian atmosphere.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Elsevier Science
ISSN: 0019-1035
Last Modified: 18 Oct 2022 12:41

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