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Morin, S.; Savarino, J.; Frey, M.M.; Yan, N.; Bekki, S.; Bottenheim, J.W.; Martins, J.M.F. (2008). Tracing the Origin and Fate of NOx in the Arctic Atmosphere Using Stable Isotopes in Nitrate. Science, 322(5902), 730–732.
Abstract: Atmospheric nitrogen oxides (NOx =NO+ NO2) play a pivotal role in the cycling of reactive nitrogen (ultimately deposited as nitrate) and the oxidative capacity of the atmosphere. Combined measurements of nitrogen and oxygen stable isotope ratios of nitrate collected in the Arctic atmosphere were used to infer the origin and fate of NOx and nitrate on a seasonal basis. In spring, photochemically driven emissions of reactive nitrogen from the snowpack into the atmosphere make local oxidation of NOx by bromine oxide the major contributor to the nitrate budget. The comprehensive isotopic composition of nitrate provides strong constraints on the relative importance of the key atmospheric oxidants in the present atmosphere, with the potential for extension into the past using ice cores.
Programme: 1011
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Benhamou S., Bonadonna F. & Jouventin P. (2003). Successful homing of magnet-carrying white-chinned petrels released in the open sea. Animal behaviour, 65, 729–734.
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Sato, T., Okuno, J., Hinderer, J., MacMillan, D. S., Plag, H.-P., Francis, O., Falk, R. and Fukuda, Y. (2006). A geophysical interpretation of the secular displacement and gravity rates observed at Ny-Alesund, Svalbard in the Arctic- Effects of the post-glacial rebound and present-day ice melting. Geophysical journal international, 165, 729–743.
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Schwarzenboeck, A.; Duroure, C.; Gayet, J.-F.; Herber, A.; Krecji, R.; Lefevre, R.; Minikin, A.; Neuber, R.; Shcherbakov, V.; Strm, J.; Yamagata, S.; Yamanouchi, T. (2004). Aerosol-Cloud Interaction during the Transition Time Period of Arctic Haze to Clean Summer Conditions. European Aerosol Conference 2004, 35. Budapest, (H).
Keywords: arctic aerosol; aerosol-cloud interaction; arctic mixed phase clouds; indirect aerosol effect
Programme: 430
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Harding, A.M.A., K. Hobson, W. Walkusz, K. Dmoch, N. Karnovsky, T.I. Van Pelt and J.T. Lifjeld. (2008). Can stable isotope (?13C and ?15N) measurements of little auk (Alle alle) adults and chicks be used to track changes in high-Arctic marine foodwebs? Polar Biol., 31(6), 725–733.
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Schott J.J. & Rasson, J.L. (2007). Observatories in Antarctica.
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Yang H.J., Frey F.A., Weis D., Giret A., Pyle D. & Michon G. (1998). Petrogenesis of the Flood Basalts Forming the Northern Kerguelen Archipelago : Implications for the Kerguelen Plume. Journal of petrology, 39(4), 711–748.
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Minier, Vincent; Durand, Gilles; Lagage, Pierre-Olivier; Talvard, M. (2007). CAMISTIC: THz/submm astronomy at Dome C in Antarctica (Vol. 14).
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Cherel Y., Fontaine C., Jackson G.D., Jackson C.H., Richard P. (2009). Tissue, ontogenic and sex-related differences in ∂13C and ∂15N values of the oceanic squid Todarodes filippovae (Cephalopoda: Ommastrephidae). Mar. Biol., 156, 699–708.
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de Linage C., Rivera L., Hinderer J., Boy J.-P., Rogister Y., Lambotte S. and Biancale R. (2009). Separation of coseismic and postseismic gravity changes for the 2004 Sumatra-Andaman earthquake from 4.6 years of GRACE observations and modelling of the coseismic change by normal-modes summation. GEOPHYSICAL JOURNAL INTERNATIONAL, 176.
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