Weather and Meteorology - Glossary
Included in this glossary you'll find terms related to our public forecasting program, weather observations and unique terminology that is of Environment Canada's hurricane centre and ice service products.
- Ultraviolet (UV) Radiation
Invisible electromagnetic radiation with a frequency between that of visible violet light and x-rays.
Most of the ultraviolet component of sunlight is absorbed by the ozone layer of the atmosphere, however UV-B radiation can cause sunburn and skin cancer, and UV-A radiation can cause photosensitivity reactions and possibly skin cancer.
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