00000nam 2200000zi 4500 9.873973 CaOODSP 20241203113649 m o d f cr ||||||||||| 190530e198909##oncd #ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- En13-5/89-177E-PDF Jerome, John H. (John Harvey) author. Determination of available subsurface light for photochemical and photobiological activity / by J.H. Jerome, R.P. Bukata and J.E. Bruton. Burlington, Ontario, Canada : National Water Research Institute, Rivers Research Branch, Canada Centre for Inland Waters, September 1989. 1 online resource (19 pages, 7 unnumbered pages) : graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 89-177 "RRB 89-69." Title from cover. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Appropriate determinations of available subsurface light for photochemical and photobiological processes requires accurate estimates of the subsurface scalar irradiation. Quite often only values of downwelling irradiation are available. Therefore, two sets of multiplicative factors are derived. The first set (F0) converts a daily irradiation just above the surface into a daily scalar irradiation Just below the surface. The second set (FZ0) converts an "effective" (i.e. depth-averaged) daily irradiation for a specific photic zone into an "effective" daily scalar irradiation for that photic zone. These multiplicative factors are presented as functions of the subsurface volume reflectance of the water for the volume reflectance range 0.0 to 0.14. For a latitude range appropriate to the Great Lakes, these multiplicative factors vary between 1.1 and 2.1"--Abstract. Includes abstract and management perspective in English and French. gccst Lighting Photobiology Photochemistry Bukata, R. P., author. Bruton, J. E., author. Canada. Environment Canada. National Water Research Institute (Canada). Rivers Research Branch. Canada Centre for Inland Waters. NWRI contribution ; 89-177. (CaOODSP)9.844121 PDF 1.48 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-89-177-eng.pdf