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Solar photolysis of ozone to singlet D oxygen atomsThe ground-level photolysis frequency of ozone J(O3) to produce metastable singlet D oxygen atoms (O (D-1)) is measured using a novel instrumental technique involving electrical conductivity. The O(D-1) atoms produced react with nitrous oxide (N2O) carrier gas to form higher oxides of nitrogen (NO(x)). These oxides were detected by mixing with methanol and determining the increase in electrical conductivity with a continuous-flow dual conductivity cell. Over 70 days of data were collected under varying sky conditions. The effect of temperature on J(O3) was measured. The results agree with model predictions. The effects of atmospheric aerosols, changes in overhead ozone column, and local cloudiness are discussed.
Document ID
19920063177
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Blackburn, Thomas E.
(IBM Corp. San Jose, CA, United States)
Bairai, Solomon T.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stedman, Donald H.
(Denver, University CO, United States)
Date Acquired
August 15, 2013
Publication Date
June 20, 1992
Publication Information
Publication: Journal of Geophysical Research
Volume: 97
Issue: D9 J
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
92A45801
Funding Number(s)
CONTRACT_GRANT: NSF ATM-86-20365
CONTRACT_GRANT: NSG-5189
Distribution Limits
Public
Copyright
Other

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