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. (2007). Diurnal production of gaseous mercury in the alpine snowpack before snowmelt. J. Geophys. Res., 112.
Keywords: Gaesous mercury; snow; flux; 0330 Atmospheric Composition and Structure: Geochemical cycles; 0322 Atmospheric Composition and Structure: Constituent sources and sinks; 1863 Hydrology: Snow and ice
Programme: 399
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McCabe, J.R.; Thiemens, M.H.; Savarino, J. (2007). A record of ozone variability in South Pole Antarctic snow: Role of nitrate oxygen isotopes. J. Geophys. Res., 112.
Keywords: nitrate; isotopes; ozone; 1041 Geochemistry: Stable isotope geochemistry; 0305 Atmospheric Composition and Structure: Aerosols and particles; 3344 Atmospheric Processes: Paleoclimatology; 1610 Global Change: Atmosphere; 0776 Cryosphere: Glaciology
Programme: 1011
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Magand, O.; Genthon, C.; Fily, M.; Krinner, G.; Picard, G.; Frezzotti, M.; Ekaykin, A.A. (2007). J. Geophys. Res., 112.
Keywords: surface mass balance; East Antarctica; data quality; 0762 Cryosphere: Mass balance; 9310 Geographic Location: Antarctica; 0736 Cryosphere: Snow; 0776 Cryosphere: Glaciology; 0794 Cryosphere: Instruments and techniques
Programme: 411;454
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Preunkert, S.; Legrand, M.; Jourdain, B.; Moulin, C.; Belviso, S.; Kasamatsu, N.; Fukuchi, M.; Hirawake, T. (2007). J. Geophys. Res., 112.
Keywords: sulfur cycle; Antarctica; dimethylsulfure; 0312 Atmospheric Composition and Structure: Air/sea constituent fluxes; 0330 Atmospheric Composition and Structure: Geochemical cycles; 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry; 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry
Programme: 414
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Tocheport, A.; Rivera, L.; Chevrot, S. (2007). A systematic study of source time functions and moment tensors of intermediate and deep earthquakes. J. Geophys. Res., 112.
Keywords: Deep earthquakes; body waves inversion; source parameters; 7203 Seismology: Body waves; 7215 Seismology: Earthquake source observations; 7209 Seismology: Earthquake dynamics; 8120 Tectonophysics: Dynamics of lithosphere and mantle: general
Programme: 133
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Tackett, P.J.; Cavender, A.E.; Keil, A.D.; Shepson, P.B.; Bottenheim, J.W.; Morin, S.; Deary, J.; Steffen, A.; Doerge, C. (2007). A study of the vertical scale of halogen chemistry in the Arctic troposphere during Polar Sunrise at Barrow, Alaska. J. Geophys. Res., 112.
Keywords: Arctic; halogen chemistry; vertical profiles; 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry; 0736 Cryosphere: Snow; 0738 Cryosphere: Ice; 0312 Atmospheric Composition and Structure: Air/sea constituent fluxes; 0322 Atmospheric Composition and Structure: Constituent sources and sinks
Programme: 457
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. (2008). Distinctive 13C isotopic signature distinguishes a novel sea ice biomarker in Arctic sediments and sediment traps. MARINE CHEMISTRY, 112, 158–167.
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Verheyden C. & Jouventin P. (1994). Olfactory behavior of foraging procellariforms. Auk, 111(2), 285–291.
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Cherel Y. & Freby F. (1994). Daily body-mass loss and nitrogen excretion during molting fast of macaroni penguins. Auk, 111(2), 492–495.
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Rivier, L.; Ciais, P.; Hauglustaine, D.A.; Bakwin, P.; Bousquet, P.; Peylin, P.; Klonecki, A. (2006). Evaluation of SF6, C2Cl4, and CO to approximate fossil fuel CO2 in the Northern Hemisphere using a chemistry transport model. J. Geophys. Res., 111.
Abstract: The distribution of the fossil fuel component in atmospheric CO2 cannot be measured directly at a cheap cost. Could anthropogenic tracers with source patterns similar to fossil fuel CO2 then be used for that purpose? Here we present and evaluate a methodology using surrogate tracers, CO, SF6, and C2Cl4, to deduce fossil fuel CO2. A three-dimensional atmospheric chemistry transport model is used to simulate the relationship between each tracer and fossil fuel CO2. In summertime the regression slopes between fossil fuel CO2 and surrogate tracers show large spatial variations for chemically active tracers (CO and C2Cl4), although C2Cl4 presents less scatter than CO. At two tall tower sites in the United States (WLEF, Wisconsin, and WITN, North Carolina), we found that in summertime the C2Cl4 (CO) versus fossil CO2 slope is on average up to 15% (25%) higher than in winter. We show that for C2Cl4 this seasonal variation is due to OH oxidation. For CO the seasonal variation is due to both chemistry and mixing with nonanthropogenic CO sources. In wintertime the three surrogate tracers SF6, C2Cl4, and CO are about equally as good indicators of the presence of fossil CO2. However, our model strongly underestimates the variability of SF6 at both towers, probably because of unaccounted for emissions. Hence poor knowledge of emission distribution hampers the use of SF6 as a surrogate tracer. From a practical point of view we recommend the use of C2Cl4 as a proxy of fossil CO2. We also recommend the use of tracers to separate fossil CO2. Despite the fact that the uncertainty on the regression slope is on the order of 30%, the tracer approach is likely to have less bias than when letting one model with one inventory emission map calculate the fossil CO2 distribution.
Keywords: fossil fuel proxy; SF 6; C 2 Cl 4; CO; carbon fluxes; emissions; 0322 Atmospheric Composition and Structure: Constituent sources and sinks; 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry; 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry; 0345 Atmospheric Composition and Structure: Pollution: urban and regional
Programme: 439
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