Search for NH_3 in Jupiter's Stratosphere Ten Months after SL9's Collision

Details Search for NH_3 in Jupiter's Stratosphere Ten Months after SL9's Collision Search for NH_3 in Jupiter's Stratosphere Ten Months after SL9's Collision

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997icar..125..331b&link_type=abstract

Icarus, Volume 125, Issue 2, pp. 331-339.

Physics

7

Scientific paper

We present high-resolution 11-μm NH_3 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 NH_3 was detected at any location. The upper limit on the NH_3 column density above 40 mbar is 6 x 10^15 molecule cm^-2, about 30 times less than that observed on July 20-31 1994 UT over the K site. Destruction of stratospheric NH_3 indicates that shielding from ultraviolet radiation was not efficient over a period of several months. Latitudinal variations observed in the NH_3 absorption line can be interpreted through variations in the tropospheric temperature field consistent with Voyager and ground-based observations. No change in tropospheric NH_3 around impact latitude needs to be invoked to explain these variations.

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