8. ULTRA-VIOLET IRRADIANCE
Solar Irradiance (or Solar radiation Energy Flow) through a horizontal surface with an area of 1 m2, is measured in W/m2 [ or equivalently in (J/s) / m2 ], as it is recorded separately in the UV-A and the UV-B bands.
UV-A and UV-B irradiance values are provided by the Kipp & Zonen UV-S-AB-T radiometer[†] .
[†] Spectral Range : 315 ~ 400 nm for the UV-A and 280 ~ 315 nm for the UV-B .