UV radiation: balancing risks and benefits.

@article{McKenzie2009UVRB,
  title={UV radiation: balancing risks and benefits.},
  author={Richard L McKenzie and James Liley and Lars Olof Bj{\"o}rn},
  journal={Photochemistry and photobiology},
  year={2009},
  volume={85 1},
  pages={88-98}
}
We use action spectra published by the International Commission on Illumination to examine diurnal, seasonal and latitudinal variations in erythemally weighted (sunburning) UV-a health risk, and vitamin D-weighted UV-a health benefit. Vitamin D-weighted UV is more strongly dependent on ozone and solar zenith angle. Consequently, its diurnal, seasonal and geographic variability is more pronounced than for erythemally weighted UV. We then investigate relationships between the two quantities. An… CONTINUE READING

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