Publications

Det er noe i luften.

Grossberndt, S.; Castell, N, Dauge, F. R.; Schneider, P.; Bartonova, A.

Det er noe i luften

Grossberndt, Sonja; Castell, Nuria

Designing a quality control program for collection and analysis of siloxane samples from environmental monitoring programs.

Durham, J.A.; Warner, N.A.; Knoerr, S.; Seston, R.; Powell, D.

Design of multi-luminescent silica-based nanoparticles for the detection of liquid organic compounds

Delic, Asmira; Lindgren, Mikael; Psarrou, Maria; Economopoulos, Solon; Mariussen, Espen; Krivokapic, Alexander; Torsæter, Ole; Omran, Mohamed ; Einarsrud, Mari-Ann

Tracer testing in reservoir formations is utilised to determine residual oil saturation as part of optimum hydrocarbon production. Here, we present a novel detection method of liquid organic compounds by monodisperse SiO2 nanoparticles (NPs) containing two luminophores, a EuIII:EDTA complex and a newly synthesised fluorophore based on the organic boron-dipyrromethene (BODIPY)-moiety. The particles exhibited stable EuIII PL emission intensity with a long lifetime in aqueous dispersion. The fluorescence of the BODIPY was also preserved in the aqueous environment. The ratiometric PL detection technique was demonstrated by using toluene and 1-octanol as model compounds of crude oil. The optimal synthesis conditions were found to give NPs with a diameter of ~100 nm, which is suitable for transport through porous oil reservoir structures. The cytotoxicity of the NPs was confirmed to be very low for human lung cell and fish cell lines. These findings demonstrate the potential of the NPs to replace the hazardous chemicals used to estimate the residual oil saturation. Moreover, the ratiometric PL detection technique is anticipated to be of benefit in other fields, such as biotechnology, medical diagnostics, and environmental monitoring, where a reliable and safe detection of a liquid organic phase is needed.

Wiley-VCH

Desert dust aerosol air mass mapping in the western Sahara, using particle properties derived from space-based multi-angle imaging.

Kahn, R.; Petzold, A.; Wendisch, M.; Bierwirth, E.; Dinter, T.; Esselborn, M.; Fiebig, M.; Heese, B.; Knippertz, P.; Müller, D.; Schladitz, A.; Von Hoyningen-Huene, W.

Description of a measurement campaign for the development and validation of a non-exhaust PM traffic emisson model. NILU OR

Denby, B.; Yttri, K.E.; Larssen, S.; Fiebig, M.; Hak, C.; Berger, J. Tørnkvist, K.

This document describes a measurement campaign intended to provide data for the further development and assessment of non-exhaust emissions and the models used to describe them.

Descent from the polar mesosphere and anomalously high stratopause observed in 8 years of water vapor and temperature satellite observations by the Odin Sub-Millimetre Radiometer.

Orsolini, Y. J.; Urban, J.; Murtagh, D.; Lossow, S.; Limpasuvan, V.

Deriving glacier flow of Comfortlessbreen, Svalbard, with 2-pass differential SAR interferometry. NILU F

Schneevoigt, N.J.; Bogren, W.; Sund, M.; Weydahl, D.J.; Kaab, A.

Derfor er luftkvaliteten bedre om sommeren.

Solbakken, C. F.

Deposition of sulfur and nitrogen in Norway 2017-2021

Blake, Lewis R.; Aas, Wenche; Denby, Bruce; Hjellbrekke, Anne-Gunn; Mu, Qing; Simpson, David; Ytre-Eide, Martin; Fagerli, Hilde

Norwegian Meteorological Institute

Deposition of major inorganic compounds in Norway 2012-2016. NILU report

Aas, W.; Hjellbrekke, A.-G.; Fagerli, H.; Benedictov, A.

This report contains estimates of atmospheric deposition of major inorganic compounds in Norway for the period 2012 to 2016 using two different methods, one observational based method while the other combining atmospheric transport model with observations. Both methods show similar clear spatial gradient in the atmospheric deposition with highest loads in south and south-west. The combined method has improved the spatial information of the deposition pattern for wet deposition. For dry deposition, there are quite large uncertainties in the estimated dry deposition velocities in both methods. Compared to the previous period 2007-2011, there is a decrease in the total sulfur deposition in Norway of 9%. For total nitrogen there are minor changes. Compared to the 1978-1982 period, the reductions in sulfur and nitrogen depositions are 75% and 20% respectively.

Deposition of major inorganic compounds in Norway 2002-2006. NILU OR

Aas, W.; Hjellbrekke, A.-G.; Hole, L.R.; Tørseth, K.