Publikasjoner

Record total ozone loss in the Arctic in winter 2010/2011. NILU PP

Goutail, F.; Lefèvre, F.; Pazmiño, A.; Pommereau, J. P.; Chipperfield, M.; Feng, W.; Van Roozendael, M.; Eriksen, P.; Stebel, K.; Dorokhov, V.; Kyrö, E.; Adams, C.; Zhao, X.; Walker, K.; Strong, K.

Record high peaks in PCB concentrations in the Arctic atmosphere due to long-range transport of biomass burning emissions.

Eckhardt, S.; Breivik, K.; Manø, S.; Stohl, A.

Reconstruction of the long-term UV climate at a North-Norwegian location in spring. Poster presentation. NILU F

Engelsen, O.; Hansen, G.

Reconstructing the volcanic eruption source term for Eyjafjlallajökull using inverse modeling and satellite retrievals. NILU F

Prata, F.; Stohl, A.; Eckhardt, S.; Kristiansen, N.; Stebel, K.; Clarisse, L.; Seibert, P.; Thomas, H.E.

Reconciling reported and unreported HFC emissions with atmospheric observations.

Lunt, M.F.; Rigby,M.; Ganesan, A.L.; Manning, A.J.; Prinn, R.G.; O'Doherty, S.; Mühle, J.; Harth, C.M.; Salameh, P.K.; Arnold, T.; Weiss, R.F.; Saito, T.; Yokouchi, Y.; Krummel, P.B.; Steele, L.P.; Fraser, P.J.; Li, S.; Park, S.; Reimann, S.; Vollmer, M.K.; Lunder, C.; Hermansen, O.; Schmidbauer, N.; Maione, M.; Arduini, J.; Young, D.; Simmonds, P.G.

Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions (RECONCILE): activities and results.

von Hobe, M.; Bekki, S.; Borrmann, S.; Cairo, F.; D'Amato, F.; Di Donfrancesco, G.; Dörnbrack, A.; Ebersoldt, A.; Ebert, M.; Emde, C.; Engel, I.; Ern, M.; Frey, W.; Genco, S.; Griessbach, S.; Grooß, J.-U.; Gulde, T.; Günther, G.; Hösen, E.; Hoffmann, L.; Homonnai, V.; Hoyle, C. R.; Isaksen, I. S. A.; Jackson, D. R.; Jánosi, I. M.; Jones, R. L.; Kandler, K.; Kalicinsky, C.; Keil, A.; Khaykin, S. M.; Khosrawi, F.; Kivi, R.; Kuttippurath, J.; Laube, J. C.; Lefèvre, F.; Lehmann, R.; Ludmann, S.; Luo, B. P.; Marchand, M.; Meyer, J.; Mitev, V.; Molleker, S.; Müller, R.; Oelhaf, H.; Olschewski, F.; Orsolini, Y.; Peter, T.; Pfeilsticker, K.; Piesch, C.; Pitts, M. C.; Poole, L. R.; Pope, F. D.; Ravegnani, F.; Rex, M.; Riese, M.; Röckmann, T.; Rognerud, B.; Roiger, A.; Rolf, C.; Santee, M. L.; Scheibe, M.; Schiller, C.; Schlager, H.; Siciliani de Cumis, M.; Sitnikov, N.; Søvde, O. A.; Spang, R.; Spelten, N.; Stordal, F.; Suminska-Ebersoldt, O.; Ulanovski, A.; Ungermann, J.; Viciani, S.; Volk, C. M.; vom Scheidt, M.; von der Gathen, P.; Walker, K.; Wegner, T.; Weigel, R.; Weinbruch, S.; Wetzel, G.; Wienhold, F. G.; Wohltmann, I.; Woiwode, W.; Young, I. A. K.; Yushkov, V.; Zobrist, B.; Stroh, F.

Recommendations pour assurer la durabilité du Centre de Gestion de la Qualité de l'Air. NILU OR

Legendre, B.; Guerreiro, C. et Sivertsen, B.

Recommendations on spatial assessment of air quality resulting from the FP6 EU project AIR4EU.

Denby, B.; Larssen, S.; Builtjes, P.; Keuken, M.; Sokhi, R.; Moussiopoulos, N.; Douros, J.; Borrego, C.; Costa, A.M.; Pregger, T.

Recommendations for the revision of the ambient air quality directives (AAQDs) regarding modelling applications

Thunis, P.; Janssen, S.; Wesseling, J.; Piersanti, A.; Pirovano, G.; Tarrasón, Leonor; Martin, F.; Lopez-Aparicio, Susana; Bessagnet, B.; Guevara, M.; Monteiro, A.; Clappier, A.; Pisoni, E.; Guerreiro, Cristina; Ortiz, A. G.

Publications Office of the European Union

Recommendations for reporting equivalent black carbon (eBC) mass concentrations based on long-term pan-European in-situ observations

Savadkoohi, Marjan; Pandolfi, Marco; Favez, Olivier; Putaud, Jean-Philippe; Eleftheriadis, Konstantinos; Fiebig, Markus; Hopke, Philip K.; Laj, Paolo G.; Wiedensohler, Alfred; Alados-Arboledas, Lucas; Bastian, Susanne; Chazeau, Benjamin; Maria, Alvaro Clemente; Colombi, Cristina; Costabile, Francesca; Green, David C.; Hueglin, Christoph; Liakakou, Eleni; Luoma, Krista; Listrani, Stefano; Mihalopoulos, Nikos; Marchand, Nicolas; Močnik, Griša; Niemi, Jarkko V; Ondráček, Jakub; Petit, Jean Eudes; Rattigan, Oliver V.; Reche, Cristina; Timonen, Hilkka; Titos, Gloria; Tremper, Anja H.; Vratolis, Stergios; Vodicka, Petr; Funes, Eduardo Yubero; Zíková, Naděžda; Harrison, Roy M.; Petäjä, Tuukka; Alastuey, Andrés; Querol, Xavier

A reliable determination of equivalent black carbon (eBC) mass concentrations derived from filter absorption photometers (FAPs) measurements depends on the appropriate quantification of the mass absorption cross-section (MAC) for converting the absorption coefficient (babs) to eBC. This study investigates the spatial–temporal variability of the MAC obtained from simultaneous elemental carbon (EC) and babs measurements performed at 22 sites. We compared different methodologies for retrieving eBC integrating different options for calculating MAC including: locally derived, median value calculated from 22 sites, and site-specific rolling MAC. The eBC concentrations that underwent correction using these methods were identified as LeBC (local MAC), MeBC (median MAC), and ReBC (Rolling MAC) respectively. Pronounced differences (up to more than 50 %) were observed between eBC as directly provided by FAPs (NeBC; Nominal instrumental MAC) and ReBC due to the differences observed between the experimental and nominal MAC values. The median MAC was 7.8 ± 3.4 m2 g-1 from 12 aethalometers at 880 nm, and 10.6 ± 4.7 m2 g-1 from 10 MAAPs at 637 nm. The experimental MAC showed significant site and seasonal dependencies, with heterogeneous patterns between summer and winter in different regions. In addition, long-term trend analysis revealed statistically significant (s.s.) decreasing trends in EC. Interestingly, we showed that the corresponding corrected eBC trends are not independent of the way eBC is calculated due to the variability of MAC. NeBC and EC decreasing trends were consistent at sites with no significant trend in experimental MAC. Conversely, where MAC showed s.s. trend, the NeBC and EC trends were not consistent while ReBC concentration followed the same pattern as EC. These results underscore the importance of accounting for MAC variations when deriving eBC measurements from FAPs and emphasize the necessity of incorporating EC observations to constrain the uncertainty associated with eBC.

Elsevier

Recommendations for an update of the Implementing Provisions for Reporting (IPR) in connection with the revision of the Ambient Air Quality Directives

Tarrasón, Leonor; Guerreiro, Cristina

This report aims to support the on-going revision of the Ambient Air Quality Directives by providing a series of recommendations on the reciprocal exchange of information and reporting of ambient air quality (e-reporting) following the Commission Implementing Decision (2011/850/EU). It builds on the experience and understanding from the EEA and technical experts at its European Topic Centre for Human Health and the Environment (ETC HE) working with implementing provisions for reporting (IPR) and identifies areas for further efficiency gains in e-reporting, in particular concerning the H-K dataflows.

ETC/HE

Receptor Modelling - Application to wood burning. NILU OR

Lazaridis, M.; Larssen, S.