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Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2015.

Svendby, T.M.; Hansen, G.H.; Edvardsen, K.; Stebel, K.; Dahlback, A.

Publication details

Series: NILU report 12/2016

Publisher: NILU

Year: 2016

ISBN: 978-82-425-2839-1

File: NILU report 12/2016 (pdf)

Summary: 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 the 1979-1989 average. However, there are large inter-annual variations and in 2015 the average ozone level was close to the 1979-1989 average values at all three Norwegian stations.