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Proceedings Paper

Physical and Statistical Modeling of Saturn's Troposphere
Author(s): Padmavati A. Yanamandra-Fisher; Amy J. Braverman; Glenn S. Orton
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Paper Abstract

The 5.2-μm atmospheric window on Saturn is dominated by thermal radiation and weak gaseous absorption, with a 20% contribution from sunlight reflected from clouds. The striking variability displayed by Saturn's clouds at 5.2 μm and the detection of PH3 (an atmospheric tracer) variability near or below the 2-bar level and possibly at lower pressures provide salient constraints on the dynamical organization of Saturn's atmosphere by constraining the strength of vertical motions at two levels across the disk. We analyse the 5.2-μm spectra of Saturn by utilising two independent methods: (a) physical models based on the relevant atmospheric parameters and (b) statistical analysis, based on principal components analysis (PCA), to determine the influence of the variation of phosphine and the opacity of clouds deep within Saturn's atmosphere to understand the dynamics in its atmosphere.

Paper Details

Date Published: 19 December 2002
PDF: 7 pages
Proc. SPIE 4847, Astronomical Data Analysis II, (19 December 2002); doi: 10.1117/12.461068
Show Author Affiliations
Padmavati A. Yanamandra-Fisher, Jet Propulsion Lab. (United States)
Amy J. Braverman, Jet Propulsion Lab. (United States)
Glenn S. Orton, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 4847:
Astronomical Data Analysis II
Jean-Luc Starck; Fionn D. Murtagh, Editor(s)

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