Publications

Update of background concentrations over Norway. NILU OR

Schneider, P.; Tønnesen, D.; Denby, B.

A methodology for creating a new dataset of estimated background concentrations of NO2, O3, PM10, and PM2.5 that are representative of a typical year over Norway, was developed. The dataset has a spatial resolution of 10 km × 10 km and an hourly temporal resolution. The methodology is based on a spatial mapping component for obtaining information on annual mean background concentrations, and a temporal characterization component, which uses long-term time series of station data to describe the typical development of background concentrations throughout a day and a year. When combined, these two components allow estimates of typical background concentrations at any time of the year at any location in Norway. Whereas the previously used VLUFT method of 1993 only provided spatially constant data at the county level, the new method presented here provides spatially continuous data at a comparatively high spatial resolution. Furthermore, while the previous method only gave a range of constant values that were considered valid throughout the entire year, the new technique provides continuous time series for a typical year at hourly resolution at any location in Norway.

Particle sampling in the Khalifa Port Industrial Zone (KPIZ). Analysis results from sampling period August 2010-February 2011. NILU OR

Hak, C.

A particle sampling and monitoring programme has been carried out in Khalifa Port Industrial Zone (KPIZ), between Abu Dhabi and Dubai. At the site in Area A of KPIZ, PM2.5 was sampled on filters during a six month period. The filters were analysed gravimetrically and with respect to fluoride. Selected filters were subject to detailed chemical speciation.
PM2.5 mass concentrations were found to agree well with concentrations observed throughout Abu Dhabi. Also inorganic ion concentrations and concentrations of most elements were similar to the Abu Dhabi average. The total carbon contribution in KPIZ was found to be lower than in the Abu Dhabi average. Fluoride concentrations were below guidance levels defined by WHO throughout the sampling period.
Inorganic ions (sulphate, nitrate, ammonium, sodium, chloride , calcium, magnesium, potassium) explained on average 49% of the PM2.5 mass, dominated by sulphate, ammonium and nitrate, which are indicators of secondary inorganic aerosol (long-range transported, anthropogenic origin).
Crustal elements (calcium, magnesium, aluminium, iron, titanium) were found to be the most abundant elements. The elements analysed accounted for 15% (on average) of the PM2.5 mass. Reconstructing the mass of crustal oxides, approximately 44% of the fine particle mass was estimated to be associated with mineral dust. Toxic heavy metal concentrations were found to be below guideline values.
Total carbon, which consists of elemental carbon, organic carbon and carbonate carbon contributed on average 12% to PM2.5 mass. About 15% of total carbon is carbonate of natural origin. Elemental carbon and organic carbon of likely anthropogenic origin usually account for most total carbon in PM2.5 in KPIZ.
PM in KPIZ has a strong signature of natural sources (mineral dust) and long-range transport of particulate pollutants. A detailed apportionment of sources requires the analysis of more samples.

Dispersion calculations due to emissions from Råde Mølle og Kornsilo. NILU OR

Haugsbakk, I.

Dispersion calculations and stack height calculatoons have been carried out for emissions from bio fuelled incinerator at Råde Mølle og Kornsilo. Minimum stack height is calculated to 29 metres above ground level with input presented in this report.

Technical Note: A new discrete ordinate first-order rotational Raman scattering radiative transfer model - implementation and first results.

Kylling, A.; Mayer, B.; Blumthaler, M.

Emissions of halogenated compounds in East Asia determined from measurements at Jeju Island, Korea.

Li, S.; Kim, J.; Kim, K.R.; Mühle, J.; Kim, S.K.; Park, M.K.; Stohl, A.; Kang, D.J.; Arnold, T.; Harth, C.M.; Salameh, P.K.; Weiss, R.F.

Thorough analysis of contaminants in Arctic air samples by means of GCxGC/ToF-MS. NILU PP

Röhler, L.; Schlabach, M.; Vetter, W.

A new flexible multicomponent model for the study of aerosol dynamics in the marine boundary layer.

Karl, M.; Gross, A.; Pirjola, L.; Leck, C.

Contaminants in polar regions - COPOL. NILU F

Evenseth, A.; Borgå, K.; Warner, N.; Ruus, A.; Hallanger, I.; Christensen, G.N.; Heimstad, E.S.; Gabrielsen, G.W.

Nitrogen as a threat to European air quality.

Moldanova, J.; Grennfelt, P.; Jonsson, Å.; Simpson, D.; Spranger, T.; Aas, W.; Munthe, J.; Rabl, A.

The twenty-seventh and twenty-eighth intercomparison of analytical methods within EMEP. EMEP/CCC

Uggerud, H.T.; Hjellbrekke, A.-G.

Dispersion calculations of NO2 emisson and stack height calculations from a gas and biofueled incinerator at Nydalen, Oslo. NILU OR

Haugsbakk, I.; Tønnesen, D.

Status report. 1 July 2010 - 1 October 2010. Environmental surveillance of emissions to air from Snøhvit-Hammerfest LNG. NILU OR

Hak, C.; Gjerstad, K.I.

The 2009 stratospheric major warming described from synergistic use of BASCOE water vapour analyses and MLS observations.

Lahoz, W. A.; Errera, Q.; Viscardy, S.; Manney, G. L.