Mathematics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998icar..136..192s&link_type=abstract
Icarus, Volume 136, Issue 2, pp. 192-201.
Mathematics
15
Scientific paper
We have performed high-resolution spectral observations at mid-infrared wavelengths of CH_4 (8.14 μm), C_2H_6 (12.16 μm), and C_2H_2 (13.45 μm) on Jupiter. These emission features probe the stratosphere of the planet and provide information on the carbon-based photochemical processes taking place in that region of the atmosphere. The observations were performed using our cryogenic echelle spectrometer CELESTE, in conjunction with the McMath-Pierce 1.5-m solar telescope between November 1994 and February 1995. We used the methane observations to derive the temperature profile of the jovian atmosphere in the 1-10 mbar region of the stratosphere. This profile was then used in conjunction with height-dependent mixing ratios of each hydrocarbon to determine global abundances for ethane and acetylene. The resulting mixing ratios are 3.9^+1.9_-1.3 x 10^-6 for C_2H_6 (5 mbar pressure level), and 2.3 +/- 0.5 x 10^-8 for C_2H_2 (8 mbar pressure level), where the quoted uncertainties are derived from model variations in the temperature profile which match the methane observation uncertainties.
Bjoraker Gordon L.
Jennings Donald E.
McCabe George H.
Romani Paul N.
Sada Pedro V.
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