Measurement of stratospheric distributions of H2O-16, H2O-18, H2O-17, and HDO-16 from far infrared spectra

Details Measurement of stratospheric distributions of H2O-16, H2O-18, H2O-17, and HDO-16 from far infrared spectra Measurement of stratospheric distributions of H2O-16, H2O-18, H2O-17, and HDO-16 from far infrared spectra

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.7509d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, April 20, 1991, p. 7509-7514. CNR-supported research.

Computer Science

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11

Atmospheric Composition, Far Infrared Radiation, Infrared Spectra, Oxygen 17, Oxygen 18, Stratosphere, Water, Abundance, Balloon Sounding, Balloon-Borne Instruments, Emission Spectra, Heavy Water

Scientific paper

The stratospheric concentration profiles of H2O-16 and the isotopic species H2O-18, H2O-17, and HDO-16, are retrieved from far-infrared emission spectra recorded by a balloon-borne Fourier transform spectrometer with 0.0035/cm resolution. The retrievals were carried out using the global-fit procedure on a statistically significant number of transitions for each isotope in the 40-85/cm spectral region. The concentration and the relative mixing ratio distributions of each isotope are given along with the resulting isotopic ratios. A comparison of these results with the natural isotopic abundances shows that there is a depletion of up to 56 + or - 8 percent of the D-containing isotope of water, while no significant deviation is obtained for the other isotopes within the error bars. A comparison of the results with previously reported measurements is given.

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