Publikasjoner

Airborne investigation of the aerosols-cloud interactions in the vicinity and within a marine stratocumulus over the North Sea during EUCAARI (2008).

Crumeyrolle, S.; Weigel, R.; Sellegri, K.; Roberts, G.; Gomes, L.; Stohl, A.; Laj, P.; Momboisse, G.; Bourrianne, T.; Puygrenier, V.; Burnet, F.; Chosson, F.; Brenguier, J.L.; Etcheberry, J.M.; Villani, P.; Pichon, J. M.; Schwarzenboeck, A.

Airborne measurements of ground and cloud spectral albedos under low aerosol loads.

Webb, A.R.; Kylling, A.; Wendisch, M.; Jakel, E.

Airborne microplastics on the move: Urban Europe as a source to remote regions

Herzke, Dorte; Schmidt, Natascha; Lervik, Astrid Elise; Schulze, Dorothea; Celentano, Samuel; Eckhardt, Sabine; Arp, Hans Peter Heinrich; Evangeliou, Nikolaos

This study presents a comprehensive assessment of unique parallel measurements of surface airborne and deposited microplastics (AMPs) across urban and remote sites in Norway, employing pyrolysis-GC/MS for polymer-specific analysis. MPs were detected in nearly all samples, with significantly higher concentrations and fluxes observed in urban areas like Oslo, where tire wear particles (TWP) dominated (>90 % of AMP mass). Seasonal peaks in TWP coincided with the transition to winter tires, while remote sites showed consistent but lower AMP levels, indicating long-range transport (LRT) from European source regions. Parallel measurements of suspended and deposited AMPs revealed consistent polymer signatures, highlighting common sources and transport pathways. Although urban TWP contributions to PM2.5 were generally low, episodic events reached up to 30 %, raising concerns about human exposure. The dual dataset enabled a robust cross-validation of atmospheric loading estimates and facilitated integration into advanced transport models for remote sites. Our findings confirm AMPs as significant components of urban air pollution and subsequent carriers of chemical and biological contaminants to remote regions, emphasizing the need for targeted monitoring and mitigation strategies.

Airborne particles in the Baroque hall of the National Library in Prague.

Andelova, L.; Ondraxkova, L.; Ondracek, J.; Smolik, J.; Grøntoft, T.; Lopez-Aparicio, S.; Stankiewicz, J.

Aircraft in situ and remote sensing measurements of emissions from Etna volcano, Sicily.

Vogel, A.; Weber, K.; Fischer, C.; Prata, A.J.; A. Durant, A.

Aircraft measurements of aerosol properties in pollution layers transported into the Arctic in spring and summer seasons. NILU F

Minikin, A.; Weinzierl, B.; Krejci, R.; Engvall, A.-C.; Schlager, H.; Arnold, F.; Ström, J.; Herber, A.; Stohl, A.

Aircraft measurements over Europe of an air pollution plume from Southeast Asia - aerosol and chemical characterization.

Stohl, A.; Forster, C.; Huntrieser, H.; Mannstein, H.; McMillian, W.W.; Petzold, A.; Schlager, H.; Weinzierl, B.

Aircraft UV/Vis spectroradiometric measurements over Antarctica.

Kostadinov, I. Bortoli, D.; Giovanelli, G.; Kylling, A.; Mayer, B.; Petritoli, A.; Ravegnani, F.; Ulanovsky, A.; Yushkov, V.

Aircraft-based mass balance estimate of methane emissions from offshore gas facilities in the southern North Sea

Pühl, Magdalena; Roiger, Anke; Fiehn, Alina; Negron, Alan M. Gorchov; Kort, Eric A.; Schwietzke, Stefan; Pisso, Ignacio; Foulds, Amy; Lee, James; France, James L.; Jones, Anna E.; Lowry, Dave; Fisher, Rebecca E.; Huang, Langwen; Shaw, Jacob; Bateson, Prudence; Andrews, Stephen; Young, Stuart; Dominutti, Pamela; Lachlan-Cope, Tom; Weiss, Alexandra; Allen, Grant

Atmospheric methane (CH4) concentrations have more than doubled since the beginning of the industrial age, making CH4 the second most important anthropogenic greenhouse gas after carbon dioxide (CO2). The oil and gas sector represents one of the major anthropogenic CH4 emitters as it is estimated to account for 22 % of global anthropogenic CH4 emissions. An airborne field campaign was conducted in April–May 2019 to study CH4 emissions from offshore gas facilities in the southern North Sea with the aim of deriving emission estimates using a top-down (measurement-led) approach. We present CH4 fluxes for six UK and five Dutch offshore platforms or platform complexes using the well-established mass balance flux method. We identify specific gas production emissions and emission processes (venting and fugitive or flaring and combustion) using observations of co-emitted ethane (C2H6) and CO2. We compare our top-down estimated fluxes with a ship-based top-down study in the Dutch sector and with bottom-up estimates from a globally gridded annual inventory, UK national annual point-source inventories, and operator-based reporting for individual Dutch facilities. In this study, we find that all the inventories, except for the operator-based facility-level reporting, underestimate measured emissions, with the largest discrepancy observed with the globally gridded inventory. Individual facility reporting, as available for Dutch sites for the specific survey date, shows better agreement with our measurement-based estimates. For all the sampled Dutch installations together, we find that our estimated flux of (122.9 ± 36.8) kg h−1 deviates by a factor of 0.64 (0.33–12) from reported values (192.8 kg h−1). Comparisons with aircraft observations in two other offshore regions (the Norwegian Sea and the Gulf of Mexico) show that measured, absolute facility-level emission rates agree with the general distribution found in other offshore basins despite different production types (oil, gas) and gas production rates, which vary by 2 orders of magnitude. Therefore, mitigation is warranted equally across geographies.

Aircraft-based observations and high-resolution simulations of an Icelandic dust storm.

Blechschmidt, A.M.; Kristjánsson, J.E.; Ólafsson, H.; Burkhart, J.F.; Hodnebrog, Ø.; Rosenberg, P.D.

AirQUIS - an urban air quality forecast system for Norwegian cities. NILU F

Bøhler, T.

AirQUIS ADACS module. Automatic Data Acquisition System. User's guide. NILU TR

Fossum, T.