A theoretical model of ultraviolet light transmission through Antarctic Sea ice

摘要: Much of the region Earth most affected by stratospheric ozone depletion is covered a seasonal or perennial sea ice cover, which habitat productive and extensive microbial community. To assess impact enhanced incident ultraviolet irradiance on this community, knowledge amount light transmitted through cover necessary. A two-stream radiative transfer model used to estimate penetration radiation Antarctic ice. Sea optical properties were as proxies infer scattering absorption coefficients at wavelengths. Case studies are reported for in McMurdo Sound Weddell Sea. Values spectral transmittance computed well integrated UV-B, UV-A, biologically effective (BEI), photosynthetically active (PAR). UV-B levels under meter-thick few percent values. The presence snow results large decrease ultraviolet. Snow ameliorate biological reducing BEI relative PAR.