Stratospheric HBr mixing ratio obtained from far infrared emission spectra

Journal Article · Tue Aug 01 04:00:00 EDT 1989 · Geophysical Research Letters (American Geophysical Union); (USA)

DOI:https://doi.org/10.1029/GL016i008p00787· OSTI ID:5548974

Park, J H ^[1]; Carli, B ^[2]; Barbis, A ^[3]

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1. NASA Langley Research Center, Hampton, VA (USA)
2. Instituto Ricerca Onde Electromagnetiche, CNR, Firenze (Italy)
3. Universita di Firenze (Italy)

Emission features of HBr isotopes have been identified in high-resolution far-infrared emission spectra obtained with a balloon-born Fourier transform spectrometer in the spring of 1979 at 32{degree}N latitude. When six single-scan spectra at a zenith angle of 93.2{degree} were averaged, two features of HBr isotopes at 50.054 and 50.069 cm{sup {minus}1} were obtained with a signal-to-noise ratio of 2.5. The volume mixing ratio retrieved from the average spectrum is 2.0 {times} 10{sub {minus}11}, which is assumed to be constant above 28 km, with an uncertainty of 35%. This stratospheric amount of HBr is about the same as the current level of tropospheric organic bromine compounds, 25 pptv. Thus, HBr could be the major stratospheric bromine species.

• OSTI ID: 5548974
• Journal Information: Geophysical Research Letters (American Geophysical Union); (USA), Journal Name: Geophysical Research Letters (American Geophysical Union); (USA) Vol. 16:8; ISSN 0094-8276; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIRSHIPS
ATMOSPHERIC CHEMISTRY
BALLOONS
BROMINE COMPOUNDS
CHEMICAL REACTIONS
CHEMISTRY
EARTH ATMOSPHERE
ECOLOGICAL CONCENTRATION
ELECTROMAGNETIC RADIATION
EMISSION SPECTROSCOPY
FAR INFRARED RADIATION
FOURIER TRANSFORM SPECTROMETERS
HALOGEN COMPOUNDS
HYDROBROMIC ACID
HYDROGEN COMPOUNDS
INFRARED RADIATION
INORGANIC ACIDS
ISOTOPES
MEASURING INSTRUMENTS
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OZONE
PHOTOCHEMICAL REACTIONS
RADIATIONS
SPECTROMETERS
SPECTROSCOPY
STRATOSPHERE
TROPOSPHERE