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We report temperatures in Venus’ upper mesosphere/lower thermosphere, deduced from reanalyzing very high resolution infrared spectroscopy of CO 2 emission lines acquired in 1990 and 1991. Kinetic temperatures at ∼110km altitude (0.15Pa) are derived from the Doppler width of fully-resolved single line profiles measured near 10.4μm wavelength using the NASA GSFC Infrared Heterodyne Spectrometer...
Ozone is an important observable tracer of martian photochemistry, including odd hydrogen (HO x ) species important to the chemistry and stability of the martian atmosphere. Infrared heterodyne spectroscopy with spectral resolution ⩾106 provides the only ground-based direct access to ozone absorption features in the martian atmosphere. Ozone abundances were measured with the Goddard Infrared...
Observations of ozone on Mars were made using the Goddard Space Flight Center's Infrared Heterodyne Spectrometer and Heterodyne Instrument for Planetary Wind and Composition at the NASA Infrared Telescope Facility. Ozone is an important observable tracer of martian photochemistry. Infrared heterodyne spectroscopy with spectral resolution ⩾106 is the only technique that directly measures ozone in the...
Infrared emission lines of stratospheric ammonia (NH 3 ) were observed following the collisions of the fragments of Comet Shoemaker-Levy 9 with Jupiter in July of 1994 at the impact sites of fragments G and K. Infrared heterodyne spectra near 10.7 μm were obtained by A. Betz et al. (in Abstracts for Special Sessions on Comet Shoemaker-Levy 9, The 26th Meeting of the Division for Planetary...
Ethane (C 2 H 6 ) abundance in Titan's stratosphere is determined from recent ground based high spectral resolution measurements of individual ethane emission line spectra. Lines near 12 μm in the ν 9 band of C 2 H 6 were measured at a resolving power of λ/Δλ 10 6 with infrared heterodyne spectroscopy at the NASA Infrared Telescope Facility (IRTF)...
We analyze the properties of wave-like longitudinal temperature variations in Jupiter's upper troposphere and stratosphere, as revealed using thermal infrared (IR) ground-based observations taken yearly during the 1989-1993 period. These thermal waves are apparently the same as the ''slowly moving thermal features'' identified in Voyager data. We conclude that they are ubiquitous at near-equatorial...
We report results from measurements of NH 3 emission lines from the stratosphere of Jupiter following the impacts of fragments of Comet P/Shoemaker–Levy 9. Measurements were taken at the NASA Infrared Telescope Facility on 29 July 1994 on two impact regions, Q1 and the RSG complex, ∼8 days after the impacts. Emission line profiles were obtained near 11.2 μm at sub-Doppler spectral resolution...
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