UV@Innsbruck Division for Biomedical Physics Federal Ministry for Sustainability and Tourism Schreder-CMS

Factors, which influence UV irradiance

The amount of ozone in the atmosphere varies, and so the intensity of UV-irradiance on the earth's surface does. Strong short term variations of total ozone in the northern hemisphere are observed in the months of January, February and March. The lowest concentrations of total ozone there can be found in late fall. Alongside ozone, other components af the earth's atmosphere, such as aerosol, absorb UV radiation.

More detailed Information: Global Solar UV Index: A Practical Guide (PDF)

For further informations please contact:
Institute of Biomedical Physics, Innsbruck Medical University or
Mag. Martin Kriech , Federal Ministry for Sustainability and Tourism