Publications

ModLUFT - et web basert hjelpemiddel for bruk av modeller til beregning av luftkvalitet. NILU F

Tønnesen, D.

Atmospheric deposition of trace elements on the local and regional scale studied by ICPMS analysis of moss samples. NILU F

Steinnes, E.; Uggerud, H.T.; Berg, T.; Pfaffhuber, K.A.

Measurements of atmospheric aerosol vertical distributions above Svalbard, Norway, using unmanned aerial systems (UAS).

Bates, T. S.; Quinn, P. K.; Johnson, J. E.; Corless, A.; Brechtel, F. J.; Stalin, S. E.; Meinig, C.; Burkhart, J. F.

Evaluating a forecast system for long-range atmospheric transport episodes of POPs. NILU PP

Halse, A.K.; Eckhardt, S.; Schlabach, M.; Stohl, A.; Breivik, K.

Background air measurements of persistent organic pollutants (POPs) within existing monitoring programs are typically conducted by use of active air samplers (AAS), but the high cost of AAS limits their spatial and temporal coverage. Sampling at many such sites furthermore occurs at fixed intervals (e.g. one day per week) without any a priori consideration of air mass transport (i.e., whether the air is likely to be polluted or not). While the current strategy is appropriate for the purpose of assessing long-term trends (years, decades), the fixed interval non-continuous sampling approach is at risk of missing out key long-range atmospheric transport (LRAT) episodes. The objectives of this study have been to (i) develop a forecast system using the Lagrangian transport model FLEXPART to predict long-range atmospheric transport episodes of POPs using PCB-28 as a model compound, (ii) to evaluate the capability of the forecast system to capture specific LRAT events at a background site in southern Norway (Birkenes) through targeted sampling (i.e. when LRAT events are predicted), (iii) to assess whether predicted LRAT events for PCB-28 coincide with elevated concentrations of additional PCBs and other POPs, and (iv) to identify source regions of POPs during individual episodes. The system has been initially evaluated by comparing targeted samples collected over 12 to 25 hours during individual LRAT episodes, with monitoring samples regularly collected over one day per week throughout 2011. The FLEXPART model was clearly successful in identifying LRAT episodes for both PCB-28 and other PCBs. The model fails to accurately reproduce the magnitude of PCB-28 concentrations during individual episodes, but this can be mainly attributed to uncertainties in the absolute emission rates of PCB-28 used to drive simulations. We conclude that forecasting of pollution episodes has the potential to add value to relevant monitoring efforts which are normally collecting active air samples at fixed intervals in a non-continuous manner. Observations targeted at strong pollution episodes (as in this study) or on transport from specific source regions with highly uncertain emissions (as could be done in a very similar forecasting framework) could significantly enhance our understanding of POP sources.

Positive vs. false detection: A comparison of analytical methods and performance for analysis of cyclic volatile methylsiloxanes (cVMS) in environmental samples from remote regions.

Warner, N.A.; Kozerski, G.; Durham, J.; Koerner, M.; Gerhards, R.; Campbell, R.; McNett, D.A.

CITI-SENSE: How viable is the citizen's contribution to particulate matter science?

Bartonova, A.; Castell, N.; Lahoz, W.; Liu, H.-Y.

FUTUREVOLC: A European volcanological supersite in Iceland, a monitoring system and network for the future.

Sigmundsson, F.; Vogfjord, K.; Gudmundsson, M.T.; Kristinsson, I.; Loughlin, S.; Ilyinskaya, E.; Hooper, A.; Kylling, A.; Witham, C.; Bean, C.; Braiden, A.; Ripepe, M.; Prata, F.; Jordan, C.J.; other members of the FUTUREVOLC team.

Monitoring of long-range transported air pollutants. Annual report for 2012. NILU OR

Aas, W.; Solberg, S.; Manø, S.; Yttri, K.E.

Air and precipitation chemistry is determined through various monitoring programmes at several sites located in the rural areas of Norway. This report describes the results for 2012, and these are compared to the previous years.

The impact of energetic particle precipitation on nitrogen species. NILU F

Orsolini, Y.

Jakten på nye miljøgifter. NILU F

Krogseth, I.S.

Nighttime secondary ozone layer during major stratospheric sudden warmings in specified-dynamics WACCM.

Tweedy, O.V.; Limpasuvan, V.; Orsolini, Y.J.; Smith, A.K.; Garcia, R.R.; Kinnison, D.; Randall, C.E.; Kvissel, O.-K.; Stordal, F.; Harvey, V.L.; Chandran, A.

Four-dimensional distribution of the 2010 Eyjafjallajökull volcanic cloud over Europe observed by EARLINET.

Pappalardo, G.; Mona, L.; D'Amico, G.; Wandinger, U.; Adam, M.; Amodeo, A.; Ansmann, A.; Apituley, A.; Alados Arboledas, L.; Balis, D.; Boselli, A.; Bravo-Aranda, J. A.; Chaikovsky, A.; Comeron, A.; Cuesta, J.; De Tomasi, F.; Freudenthaler, V.; Gausa, M.; Giannakaki, E.; Giehl, H.; Giunta, A.; Grigorov, I.; Groß, S.; Haeffelin, M.; Hiebsch, A.; Iarlori, M.; Lange, D.; Linné, H.; Madonna, F.; Mattis, I.; Mamouri, R.-E.; McAuliffe, M. A. P.; Mitev, V.; Molero, F.; Navas-Guzman, F.; Nicolae, D.; Papayannis, A.; Perrone, M. R.; Pietras, C.; Pietruczuk, A.; Pisani, G.; Preißler, J.; Pujadas, M.; Rizi, V.; Ruth, A. A.; Schmidt, J.; Schnell, F.; Seifert, P.; Serikov, I.; Sicard, M.; Simeonov, V.; Spinelli, N.; Stebel, K.; Tesche, M.; Trickl, T.; Wang, X.; Wagner, F.; Wiegner, M.; Wilson, K. M.

Operational emergency preparedness modeling - overview. Geophysical Monograph Series, 200

Stohl, A.