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An Analysis of Cassini Observations Regarding the Structure of Jupiter's Equatorial Atmosphere
Author and Affiliation:
Choi, David S.(Oak Ridge Associated Universities, Inc., United States);
Simon-Miller, Amy A.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Abstract: A variety of intriguing atmospheric phenomena reside on both sides of Jupiter's equator. 5-micron bright hot spots and opaque plumes prominently exhibit dynamic behavior to the north, whereas compact, dark chevron-shaped features and isolated anticyclonic disturbances periodically occupy the southern equatorial latitudes. All of these phenomena are associated with the vertical and meridional perturbations of Rossby waves disturbing the mean atmospheric state. As previous observational analysis and numerical simulations have investigated the dynamics of the region, an examination of the atmosphere's vertical structure though radiative transfer analysis is necessary for improved understanding of this unique environment. Here we present preliminary analysis of a multispectral Cassini imaging data set acquired during the spacecraft's flyby of Jupiter in 2000. We evaluated multiple methane and continuum spectral channels at available viewing angles to improve constraints on the vertical structure of the haze and cloud layers comprising these interesting features. Our preliminary results indicate distinct differences in the structure for both hemispheres. Upper troposphere hazes and cloud layers are prevalent in the northern equatorial latitudes, but are not present in corresponding southern latitudes. Continued analysis will further constrain the precise structure present in these phenomena and the differences between them.
Publication Date: Jan 01, 2012
Document ID:
20120015403
(Acquired Nov 03, 2012)
Subject Category: LUNAR AND PLANETARY SCIENCE AND EXPLORATION
Report/Patent Number: GSFC.ABS.7056.2012
Document Type: Conference Paper
Meeting Information: American Geophysical Union's 45th Annual Fall Meeting; 3-7 Dec. 2012; San Francisco, CA; United States
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 2p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ATMOSPHERIC COMPOSITION; CASSINI MISSION; CLOUD COVER; EQUATORIAL ATMOSPHERE; HAZE; IMAGING TECHNIQUES; JUPITER ATMOSPHERE; METHANE; PLANETARY METEOROLOGY; RADIATIVE TRANSFER
Availability Source: Other Sources
Availability Notes: Abstract Only
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