New Horizons Alice UV Observations of a Stellar Occultation by Jupiter's Atmosphere

Details New Horizons Alice UV Observations of a Stellar Occultation by Jupiter's Atmosphere New Horizons Alice UV Observations of a Stellar Occultation by Jupiter's Atmosphere

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufm.p53c..05g&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #P53C-05

Physics

5704 Atmospheres (0343, 1060), 5709 Composition (1060)

Scientific paper

The Alice instrument onboard the New Horizons spacecraft observed two occultations of Chi Ophiuchus by Jupiter's atmosphere during the 2007 Jupiter flyby. The ingress occultation probed the atmosphere at 35 degrees latitude (planetographic) near the dawn terminator, while the egress probed 20 degrees latitude near the dusk terminator. We present a preliminary analysis of both the ingress and egress occultations, including determinations of the methane and acetylene homopause levels. These observations provide stringent constraints for the assumed strength of eddy mixing in current photochemical models of Jupiter's atmosphere.

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