Physics
Scientific paper
Jan 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.1057r&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Jan. 20, 1991, p. 1057-1068.
Physics
40
Atmospheric Composition, Atmospheric Moisture, Heavy Water, Stratosphere, Water Vapor, Hydrogen Isotopes, Infrared Spectra, Oxygen Isotopes, Solar Spectra, Spacelab
Scientific paper
The isotopic composition of stratospheric water vapor and methane was investigated. Stratospheric profiles of HDO, (H-18)2O, (H-17)2O, and CH3D were derived from solar occultation spectra recorded on April 30 - May 1, 1985 by the Atmospheric Trace Molecule Spectroscopy Fourier transform spectrometer aboard Spacelab 3. The profiles of the three water-vapor isotopes showed an increase in the volume mixing ratio with altitude. The measured profiles of D/H in water vapor showed a large depletion in the lower stratosphere (about 63 percent relative to standard mean ocean water, SMOW, at 20 km) and a small increase in D/H with altitude at higher altitudes, up to 34 km. The D/H ratio in stratospheric methane was close to the corresponding isotopic ratio in SMOW.
Farmer Crofton B.
Foster Christopher J.
Gunson Michael R.
Rinsland Curtis P.
Toth Robert A.
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