Spectral Imaging of Saturn by Cassini/VIMS: Early Science Results

Details Spectral Imaging of Saturn by Cassini/VIMS: Early Science Results Spectral Imaging of Saturn by Cassini/VIMS: Early Science Results

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufm.p44a..04b&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #P44A-04

Physics

0300 Atmospheric Composition And Structure, 0310 Airglow And Aurora, 0320 Cloud Physics And Chemistry, 0343 Planetary Atmospheres (5405, 5407, 5409, 5704, 5705, 5707)

Scientific paper

We report results obtained from spectral images of Saturn acquired during the first two Saturn encounters by the Visual and Infrared Mapping Spectrometer (VIMS) on board the Cassini spacecraft. The broad spectral coverage of the VIMS instrument - from 0.3 to 5.1 microns - enables VIMS to observe a wide variety of atmospheric phenomena and processes. These include: (1) the vertical and spatial distribution and microphysical properties (size, shape, and composition) of stratospheric hazes and tropospheric clouds, (2) the distributions of condensable vapors (e.g., water and ammonia) and disequilibrium species (e.g., phosphine), diagnostic of meteorology and global circulation, (3) the distribution of species generated by auroral processes (e.g., H3+), (4) methane fluorescence near 10-microbar level, and (5) lightning. Preliminary results will be presented, including images and spectra of the cloudy equatorial region, the southern temperate latitudes, and the south polar aurorae.

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