Search for NH3 in Jupiter's stratosphere ten months after SL9's collision

Bruno Bézard, Caitlin A. Griffith, Douglas M. Kelly

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

We present high-resolution 11-μm NH3 observations of the Shoemaker-Levy 9 sites that were conducted on May 15-18, 1995 UT at the NASA Infrared Telescope Facility. No emission from stratospheric NH3 was detected at any location. The upper limit on the NH3 column density above 40 mbar is 6 × 1015 molecule cm-2, about 30 times less than that observed on July 20-31 1994 UT over the K site. Destruction of stratospheric NH3 indicates that shielding from ultraviolet radiation was not efficient over a period of several months. Latitudinal variations observed in the NH3 absorption line can be interpreted through variations in the tropospheric temperature field consistent with Voyager and ground-based observations. No change in tropospheric NH3 around impact latitude needs to be invoked to explain these variations.

Original languageEnglish (US)
Pages (from-to)331-339
Number of pages9
JournalIcarus
Volume125
Issue number2
DOIs
StatePublished - Feb 1997
Externally publishedYes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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