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On the relationship between secular brightness changes of Titan and solar variability

Pollack, James B. and Rages, Kathy and Toon, Owen B. and Yung, Yuk L. (1980) On the relationship between secular brightness changes of Titan and solar variability. Geophysical Research Letters, 7 (10). pp. 829-832. ISSN 0094-8276. doi:10.1029/GL007i010p00829. https://resolver.caltech.edu/CaltechAUTHORS:20140902-134158307

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Abstract

Titan’s geometric albedo varied noticeably from 1972 to 1978, in phase with variations in solar activity [Lockwood and Thompson, 1979]. We carry out a series of radiative transfer and aerosol formation calculations in order to demonstrate the feasibility of the following scenario for these secular brightness changes: solar activity changes, especially in the UV output of the Sun, result in alterations to the mass production rate of aerosols in Titan’s atmosphere, which lead to modifications of their microphysical properties. The latter, in turn, cause the albedo to vary. Current estimates of the change in the solar UV radiation below the dissociation limit of methane imply alterations to the mean radius of the aerosols over an 11-yr solar cycle that are consistent in sign and magnitude with those required to explain the observed secular brightness changes.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/GL007i010p00829 DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/GL007i010p00829/abstractPublisherArticle
ORCID:
AuthorORCID
Yung, Yuk L.0000-0002-4263-2562
Additional Information:This paper is not subject to U.S. copyright. Published in 1980 by the American Geophysical Union. Received June 16, 1980; accepted August 5, 1980. Paper number 80L1079.
Issue or Number:10
DOI:10.1029/GL007i010p00829
Record Number:CaltechAUTHORS:20140902-134158307
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140902-134158307
Official Citation:(1980), On the relationship between secular brightness changes of Titan and solar variability. Geophysical Research Letters, 7: 829–832. doi: 10.1029/GL007i010p00829
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49126
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:03 Sep 2014 18:44
Last Modified:10 Nov 2021 18:40

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