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A simple analytical formula to compute clear sky total and photosynthetically available solar irradiance at the ocean surfaceA simple but accurate analytical formula was developed for computing the total and the photosynthetically available solar irradiances at the ocean surface under clear skies, which takes into account the processes of scattering by molecules and aerosols within the atmosphere and of absorption by the water vapor, ozone, and aerosols. These processes are parameterized as a function of solar zenith angle, aerosol type, atmospheric visibility, and vertically integrated water-vapor and ozone amounts. Comparisons of the calculated and measured total and photosynthetically available solar irradiances for several experiments in tropical and mid-latitude ocean regions show 39 and 14 Wm/sq m rms errors (6.5 and 4.7 percent of the average measured values) on an hourly time scale, respectively. The proposed forumula is unique in its ability to predict surface solar irradiance in the photosynthetically active spectral interval.
Document ID
19890060845
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Frouin, Robert
(California Univ. La Jolla, CA, United States)
Lingner, David W.
(California Univ. La Jolla, CA, United States)
Gautier, Catherine
(California Univ. La Jolla, CA, United States)
Baker, Karen S.
(California, University La Jolla, United States)
Smith, Ray C.
(California, University Santa Barbara, United States)
Date Acquired
August 14, 2013
Publication Date
July 15, 1989
Publication Information
Publication: Journal of Geophysical Research
Volume: 94
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
89A48216
Funding Number(s)
CONTRACT_GRANT: NAGW-851
CONTRACT_GRANT: NAGW-290-3
CONTRACT_GRANT: N00014-84-C-0328
Distribution Limits
Public
Copyright
Other

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