Ocean scalar irradiance near-surface maxima
Article Abstract:
In situ scalar irradiance E sub O (tau) generally decreases with optical depth (tau), but sometimes peaks in E(o) can occur near the surface, even in the absence of internal sources. Near-surface peaking is most likely to appear with incident illumination strongly directed at the zenith angle. An increase in the asymmetry of the scattering phase function is associated with a deeper location of the maximum. Surface waves and internal reflection reduce the likelihood of peaking in E(o). For the maximum to occur below surface under those conditions, the single scattering albedo must be greater than 0.95 or else the albedo must increase with depth.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1998
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Light scattering and chlorophyll concentration in case 1 waters: a reexamination
Article Abstract:
A reassessment of the relationship between the particle scattering coefficient b sub p and the chlorophyll concentration has been conducted using a large dataset of recent measurements in case 1 waters, in the open ocean. The relationship is nonlinear over the whole range of chlorophyll concentration. The relationship still shows a large amount of noise, however, despite the greater accuracy of measurements. Studying the deep layer and the near-surface layer separately is recommended.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1998
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Effect of Raman scattering on the average cosine and diffuse attenuation coefficient of irradiance in the ocean
Article Abstract:
Raman scattering in oceans may be accompanied by pronounced vertical gradients in average cosine and diffuse attenuation coefficient of irradiance, especially with long wavelengths and low concentrations of chlorophyll. In the asymptotic field, Raman scattering has no effect at shorter wavelengths, but has a strong effect at longer wavelengths. A transition occurs that varies with increasing concentration of chlorophyll.
Publication Name: Limnology and Oceanography
Subject: Earth sciences
ISSN: 0024-3590
Year: 1998
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