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Fant 9234 publikasjoner. Viser side 368 av 370:


A comprehensive survey of persistent organic pollutants in Norwegian birds of prey eggs. Organohalogen compounds, vol. 46

Kallenborn, R.; Herzke, D.; Nygård, T.


A comprehensive quantification of global nitrous oxide sources and sinks

Tian, Hanqin; Xu, Rongting; Canadell, Josep G.; Thompson, Rona Louise; Winiwarter, Wilfried; Suntharalingam, Parvadha; Davidson, Eric A.; Ciais, Philippe; Jackson, Robert B.; Janssens-Maenhout, Greet; Prather, Michael J.; Regnier, Pierre; Pan, Naiqing; Pan, Shufen; Peters, Glen Philip; Shi, Hao; Tubiello, Francesco N.; Zaehle, Sönke; Zhou, Feng; Arneth, Almut; Battaglia, Gianna; Berthet, Sarah; Bopp, Laurent; Bouwman, Alexander F.; Buitenhuis, Erik T.; Chang, Jinfeng; Chipperfield, Martyn P.; Dangal, Shree R, S,; Dlugokencky, Edward; Elkins, James W.; Eyre, Bradley D.; Fu, Bojie; Hall, Bradley; Ito, Akihiko; Joos, Fortunat; Krummel, Paul B.; Landolfi, Angela; Laruelle, Goulven G.; Lauerwald, Ronny; Li, Wei; Lienert, Sebastian; Maavara, Taylor; Macleod, Michael; Millet, Dylan B.; Olin, Stefan; Patra, Prabir K.; Prinn, Ronald G.; Raymond, Peter A.; Ruiz, Daniel J.; van der Werf, Guido R.; Vuichard, Nicolas; Wang, Junjie; Weiss, Ray F.; Wells, Kelley C.; Wilson, Chris; Yang, Jia; Yao, Yuanzhi


A comprehensive evaluation of the use of Lagrangian particle dispersion models for inverse modeling of greenhouse gas emissions

Vojta, Martin; Plach, Andreas; Thompson, Rona Louise; Stohl, Andreas

Using the example of sulfur hexafluoride (SF6), we investigate the use of Lagrangian particle dispersion models (LPDMs) for inverse modeling of greenhouse gas (GHG) emissions and explore the limitations of this approach. We put the main focus on the impacts of baseline methods and the LPDM backward simulation period on the a posteriori emissions determined by the inversion. We consider baseline methods that are based on a statistical selection of observations at individual measurement sites and a global-distribution-based (GDB) approach, where global mixing ratio fields are coupled to the LPDM back-trajectories at their termination points. We show that purely statistical baseline methods can cause large systematic errors, which lead to inversion results that are sensitive to the LPDM backward simulation period and can generate unrealistic global total a posteriori emissions. The GDB method produces a posteriori emissions that are far less sensitive to the backward simulation period and that show a better agreement with recognized global total emissions. Our results show that longer backward simulation periods, beyond the often used 5 to 10 d, reduce the mean squared error and increase the correlation between a priori modeled and observed mixing ratios. Also, the inversion becomes less sensitive to biases in the a priori emissions and the global mixing ratio fields for longer backward simulation periods. Further, longer periods might help to better constrain emissions in regions poorly covered by the global SF6 monitoring network. We find that the inclusion of existing flask measurements in the inversion helps to further close these gaps and suggest that a few additional and well-placed flask sampling sites would have great value for improving global a posteriori emission fields.


A complete rethink is needed on how greenhouse gas emissions are quantified for national reporting

Leip, Adrian; Skiba, Ute; Vermeulen, Alex; Thompson, Rona Louise



A comparison of the present and last interglacial periods in six Antarctic ice cores.

Masson-Delmotte, V.; Buiron, D.; Ekaykin, A.; Frezzotti, M.; Gallée, H.; Jouzel, J.; Krinner, G.; Landais, A.; Motoyama, H.; Oerter, H.; Pol, K.; Pollard, D.; Ritz, C.; Schlosser, E.; Sime, L. C.; Sodemann, H.; Stenni, B.; Uemura, R.; Vimeux, F.


A comparison of organic contaminants in two high Arctic lake ecosystems, Bjørnøya (Bear Island), Norway.

Evenset, A.; Christensen, G.N.; Skotvold, T.; Fjeld, E.; Schlabach, M.; Wartena, E.; Gregor, D.


A comparison of NAME model predctions and observations from the 2020 Ejafjallajökull eruption.

Webster, H. N.; Thomson, D.J.; Johnson, B.T.; Heard, I.P.C.; Turnbull, K.; Marenco, F.; Kristiansen, N.I.; Dorsey, J.; Minikin, A.; Weinzierl, B.; Schumann, U.; Sparks, R.S.J.; Loughlin, S.C.; Hort, M.C.; Leadbetter, S.J.; Devenish, B.J.; Haywood, J.M.; Golding, B.W.


A community engaging air quality monitoring network

Grossberndt, Sonja; Liu, Hai-Ying; Fellermann, Arne; Bieker, Lisa


A combined DPSIR and SAF approach for the adaptive management of beach erosion in Monte Hermoso and Pehuen Co (Argentina).

Semeoshenkova, V.; Newton, A.; Rojas, M.; Piccolo, M.C.; Bustos, M.L.; Huamantinco Cisneros, M.A.; Berninsone, L.G.


A close look at oceanic sources of continental precipitation.

Gimeno, L.; Nieto, R.; Drumond, A.; Durán-Quesada, A.M.; Stohl, A.; Sodemann, H.; Trigo, R.M.


A climatology of frozen-in anticyclones in the spring arctic stratosphere over the period 1960-2011.

Thiéblemont, R.; Orsolini, Y.J.; Hauchecorne, A.; Drouin, M.-A.; Huret, M.