Attenuation of Solar Radiation in Humic Waters

  • David Lean
Part of the Ecological Studies book series (ECOLSTUD, volume 133)


Underwater solar spectral distribution has become critically important in assessing not only the impact of increased solar UV-B (290–320 nm) radiation resulting from stratospheric ozone depletion (Kerr and McElroy 1993) but also the role of ambient levels of both UV-B, UV-A (320–400 nm) and photosynthetically active radiation (PAR) (400–750 nm). Furthermore, as noted in other chapters, dissolved organic carbon (DOC) compounds compete for photons of visable light with the phytoplankton, which lowers areal primary production in humic waters.


Attenuation Coefficient Dissolve Organic Carbon Concentration Dissolve Organic Matter High Dissolve Organic Carbon Humic Lake 
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© Springer-Verlag Berlin Heidelberg 1998

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  • David Lean

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