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Monitoring of the atmospheric ozone layer and natural ultraviolet radiation: Annual report 2017.

Svendby, Tove; Hansen, Georg H.; Dahlback, Arne

Publication details

Series: NILU rapport 23/2018

Publisher: NILU

Year: 2018

ISBN: 978-82-425-2942-8

Arkiv: http://hdl.handle.net/11250/2563072

This report summarizes the results from the Norwegian monitoring programme on stratospheric ozone and UV radiation measurements. The ozone layer has been measured at three locations since 1979: in Oslo, Tromsø/Andøya and Ny-Ålesund. The UV measurements started in 1995. The results show that there was a significant decrease in stratospheric ozone above Norway between 1979 and 1997. After that the ozone layer stabilized at a level ~2% below pre-1980 level. There are large inter-annual variations and in 2017 there were relatively low values at all the three Norwegian stations during the winter. However, the ozone situation normalized towards the end of spring.