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

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 wa...

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Bibliographic Details
Main Authors: Svendby, Tove Marit, Hansen, Georg Heinrich, Dahlback, Arne
Format: Report
Language:English
Published: NILU 2018
Subjects:
Online Access:http://hdl.handle.net/11250/2563072
Description
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 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. Denne rapporten presenterer resultatene fra det norske måleprogrammet for totalozon og UV-stråling. Ozonlaget har blitt målt ved tre stasjoner siden 1979: i Oslo, Tromsø/Andøya og Ny-Ålesund. UV-målinger startet i 1995. Resultatene viser at det var en signifikant ozonreduksjon over Norge i perioden 1979 til 1997. Deretter stanset en videre reduksjon og ozonverdiene stabiliserte seg på et nivå ~2% lavere pre-1980 nivået. Det er imidlertid store årlige fluktuasjoner, og i 2017 var det gjennomsnittlige ozonlaget relativt tynt om vinteren, men normaliserte seg mot sommeren. publishedVersion