Computer Science – Sound
Scientific paper
Sep 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..704c&link_type=abstract
Geophysical Research Letters, vol. 7, Sept. 1980, p. 704-706.
Computer Science
Sound
2
Atmospheric Composition, Balloon Sounding, Far Infrared Radiation, Hydrochloric Acid, Infrared Spectroscopy, Stratosphere, Abundance, Balloon-Borne Instruments, Fourier Transformation, Spectral Line Width
Scientific paper
Thermal emission from three rotational lines of H(Cl-35) and H(Cl-37) was observed with a Fourier transform spectrometer from a balloon platform at 28.9 km. The measured HCl line-of-sight density at 1.9 deg elevation above 28.9 km is 4.7 + or - 1.3 x 10 to the 15th/sq cm, implying an average volume mixing ratio of 0.8 + or - 0.2 x 10 to the -9th at the mean sampling altitude of 32.5 km. For a uniform mixing ratio model, this corresponds to a vertical column density of 2.4 + or - 0.6 x 10 to the 14th/sq cm. This result is in reasonable agreement with near infrared spectroscopic determinations and an abundance from a chemical sampling technique of HCl at this altitude; a pressure modulator radiometer measurement yields a significantly higher amount of HCl.
Brasunas John C.
Chance Kelly V.
Traub Wesley A.
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