Publications

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual Report 2023

Svendby, Tove Marit; Fjæraa, Ann Mari; Schulze, Dorothea; Bäcklund, Are; Johnsen, Bjørn

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/Kjeller, 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. The year 2023 was characterized by low ozone values in winter, high spring values, and annual average total ozone values slightly below the long-term mean.

NILU

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2021.

Svendby, Tove Marit; Hansen, Georg H.; Bernet, Leonie; Bäcklund, Are; Nilsen, Anne-Cathrine; Schulze, Dorothea; Johnsen, Bjørn

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/Kjeller, 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. The year 2021 was characterized by low total ozone values in June and July, whereas “normal” ozone values were measured during winter and spring.

NILU

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual Report 2019.

Svendby, Tove Marit; Hansen, Georg H.; Bäcklund, Are; Nilsen, Anne-Cathrine

Denne rapporten presenterer resultatene fra det norske måleprogrammet for totalozon og UV-stråling. Ozonlaget har blitt målt ved tre stasjoner siden 1979: i Oslo/Kjeller, 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 reduksjonen og ozonverdiene stabiliserte seg på et nivå ~2% lavere enn verdiene før 1980. Mest karakteristisk for 2019 var et tynt ozonlag i april 2019 og et «ozonhull» over Sør-Norge i desember 2019.

NILU

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2016. NILU report

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

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.

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2014. NILU OR

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

This is an annual report describing the activities and main results of the monitoring programme
"Monitoring of the atmospheric ozone layer and natural ultraviolet radiation" for 2014. The ozone
layer was below the long-term mean in spring 2014, but increased in April/May and was close to
normal rest of the year. A clear decrease in total ozone above Norway during the period 1979-
1997 stopped after 1998 and the ozone layer above Norway now seems to have stabilized.

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2012. NILU OR

Svendby, T.M.; Edvardsen, K.; Myhre, C.L.; Stebel, K.; Orsolini, Y.; Dahlback, A.

This is an annual report describing the activities and main results of the monitoring programme "Monitoring of the atmospheric ozone layer and natural ultraviolet radiation" for 2012. In 2012 the ozone values above Norway were close to the long-term mean, except from the ozone winter values in Oslo which were lower than normal. A clear decrease in the ozone layer above Norway during the period 1979-1997 stopped after 1998 and the ozone layer above Norway now seems to have stabilized.

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2010. NILU OR

Myhre, C.L.; Svendby, T.M.; Stebel, K.; Edvardsen, K.; Johnsrud, M.; Dahlback, A.

This is an annual report describing the activities and main results of the monitoring programme ¿Monitoring of the atmospheric ozone layer and natural ultraviolet radiation¿ for 2010.
2010 was a year with generally high ozone values above Norway. A clear decrease in the ozone layer above Norway during the period 1979-1997 stopped after 1998 and the ozone layer above Norway seems now to have stabilized.

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2008. NILU OR

Myhre, C.L.; Edvardsen, K.; Stebel, K.; Svendby, T.M.; Engelsen, O.; Kube, R.; Dahlback, A.

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2006. NILU OR

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

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2004. NILU OR

Myhre, C.L.; Høiskar, B.A.K.; Braathen, G.O.; Dahlback, A.; Edvardsen, K.; Hansen, G.H.; Stebel, K.; Svendby, T.M.; Vik, A.F.

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2002. NILU OR

Høiskar, B. A.; Braathen, G. O.; Dahlback, A.; Edvardsen, K.; Hansen, G.; Stebel, K.; Svendby, T.; Vik, A. F.

Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2000. NILU OR

Høiskar, B. A. K.; Braathen, G. O.; Dahlback, A.; Bojkov, B. R.; Edvardsen, K.; Hansen, G.; Svenøe, T.