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 | |||||||||
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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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