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UV Index Map of Europe

Read our Eyrthema amd skin exposure to UV application guide for more details.

In the initial work done on UVI in Canada, a typical midday summer erythemal irradiance of 250 mW.m-2 was found, leading to the definition of one UV index equal to an erythemally weighted irradiance of 25 mW.m-2. This gives a typical range from UVI 0 at night to UVI in excess of 11 in sunnier climes.

UVI can be evaluated directly through a measurement of global solar irradiance in a location with an un-obscured hemispherical view. The spectral range can be reduced to 290-400nm given that the shorter wavelengths aren't transmitted to the earth's surface thanks to the ozone layer.


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Categories: Solar & Photovoltaics, Public Health & PPE

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