Dependence of j(O/sub 3/-O(/sup 1/D)) on the choice of extraterrestrial solar irradiance data
Estimates of the photolysis frequency (j) of tropospheric ozone (O/sub 3/) to the excited singlet oxygen atom (O(/sup 1/D)) depend on a knowledge of the extraterrestrial solar irradiance in the wavelength region between 300 and 320 nm. A standard format is proposed that facilitates the intercomparison of solar irradiance data sets in the 300-320-nm wavelength region so as to determine their appropriateness for use in calculating tropospheric values for j(O/sub 3/-O(/sup 1/D)). Twelve data sets are thus compared, the results of which indicate that, with the exception of two data sets, the resulting j values are consistent with each other to within the accuracy of the measured data and thus are appropriate for use in determining j values. Computed j values from all 12 data sets are tabulated and indicate in a relative sense the dependence of modeled j values on the choice of the solar irradiance data set used. 31 references, 3 figures, 1 table.
- Research Organization:
- NASA Langley Research Center, Hampton, VA
- OSTI ID:
- 6357427
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 21:5; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACCURACY
ATMOSPHERIC CHEMISTRY
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
EARTH ATMOSPHERE
EXPERIMENTAL DATA
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
SOLAR RADIATION
STELLAR RADIATION
TROPOSPHERE