Monitoring of the atmospheric ozone layer and natural ultraviolet radiation: Annual report 2016
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Original versionSvendby, T.M., Hansen, G.H., Stebel, K., Bäcklund, A., & Dahlback, A. (2017). Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2016 (Miljødirektoratet rapport, M-803/2017) (NILU report, 31/2017). Kjeller: NILU.
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. There are large inter-annual variations and in 2016 there were relatively low values at all the three Norwegian stations, especially in February/March.
Norwegian Environment Agency; M-803/2017