Publications

Monitoring of pm10 at Pilestredet Park-gamle Rikshospitalet, Oslo 6 September-10 December 2001. 10 NILU OR

Haugsbakk, I.

Monitoring of POPs and CECs in air at the Zeppelin observatory, Ny-Ålesund

Halvorsen, Helene Lunder; Nipen, Maja; Bohlin-Nizzetto, Pernilla; Nikiforov, Vladimir; Hartz, William Frederik

Monitoring of size-segregated particulate matter fractions with optical instruments in urban areas.

Dunea, D.; Savu, T.; Marsteen, L.

The assessment of harmful PM concentrations i.e. particles with an aerodynamic diameter below 2.5 µm, requires continuous monitoring conducted for 24 hours a day, for 365 days a year. Monitoring campaigns for screening the PM levels in a particular urban area facilitate the conceiving of a continuous monitoring plan by establishing where to deploy optimally the optical instruments for on-line measurement. The paper presents the practical efficiency of the outdoor monitoring of PM size fractions using a new optical equipment i.e. Dusttrak DRX 8533 with environmental enclosure and heating module. The experiments were carried out in Targoviste city, Romania, between 2014 and 2015 within the first two phases of the ROkidAIR project (http://www.rokidair.ro) to perform a screening of the PM concentrations existing in these urban areas and to calibrate the prototype of the PM2.5 microstation developed within the project .The utilization of the DustTrak instrument showed that in heavy traffic conditions without significant industrial emissions, the most frequent PM fraction is the submicrometric one (PM1).The results pointed out the usefulness of monitoring four size segregated mass fractions and their relationship with the potential PM emission sources. Outdoor PM2.5 measurements provide key information for evaluating population exposure, planning of air quality and establishing of reliable measures that allow the lowering of PM emission.

Monitoring of surface blackening and zinc reaction products on prepared samples located adjacent to Munch's The Source in the Aula at the University of Oslo.

Frøysaker, T.; Millani, C.; Grøntoft, T.; Kleiva, I.

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

Svendby, Tove Marit; Hansen, Georg Heinrich; Dahlback, Arne

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.

NILU

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.

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 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 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 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 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 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 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.