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

• Main Authors: Svendby, Tove Marit, Hansen, Georg Heinrich, Stebel, Kerstin, Dahlback, Arne, Edvardsen, Kåre
• Format: Report
• Language: English
• Published: 2016
• Subjects: Trollobservatoriet; Zeppelinobservatoriet; Andøya; Norway; Ny-Ålesund; Tromsø; Ny Ålesund
• Online Access: http://hdl.handle.net/11250/2416262

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.