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Moteki Masato, Koubbi Philippe, Pruvost Patrice, Tavernier Eric, Hulley Percy-Alexander, . (2011). Polar Science, 5(2), 211–224.
Keywords: Pelagic fish, Community structure, East Antarctica, Mesopelagic fish, Notothenioids,
Programme: 1142
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Jaffal A, Givaudan N, Betoulle S, Terreau A, Paris-Palacios S, Biagianti-Risbourg S, Beall E, Roche H, . (2011). Polychlorinated biphenyls in freshwater salmonids from the Kerguelen Islands in the Southern Ocean
. 0269-7491, 159(5), 1381–1389.
Keywords: PCB accumulation, Sub-Antarctic area, Salmonids, Kerguelen Islands,
Programme: 409
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Loots Christophe, Swadling Kerrie M, Koubbi Philippe, . (2009). Journal of Marine Systems, 78(4), 599–605.
Keywords: Paralabidocera antarctica, Drescheriella glacialis, Stephos longipes, Southern Ocean, Sea ice, Life cycles,
Programme: 1142
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Masson-Delmotte, V.; Landais, A.; Stievenard, M.; Cattani, O.; Falourd, S.; Jouzel, J.; Johnsen, S.J.; Dahl-Jensen, D.; Sveinsbjornsdottir, A.; White, J.W.C.; Popp, T.; Fischer, H. (2005). Holocene climatic changes in Greenland: Different deuterium excess signals at Greenland Ice Core Project (GRIP) and NorthGRIP. J. Geophys. Res., 110.
Abstract: Water stable isotope measurements (?D and ?18O) have been conducted on the Holocene part of two deep Greenland ice cores (Greenland Ice Core Project (GRIP) and NorthGRIP), located ?320 km apart. These combined measurements provide the first two continuous Greenland Holocene deuterium excess profiles (d = ?D ? 8?18O), a parameter strongly influenced by changes in moisture sources. We discuss here temporal and regional fluctuations of the deuterium excess within central to north Greenland, with a mean temporal resolution of ?4 years. Although GRIP and NorthGRIP exhibit similar annual mean surface temperatures and ?18O levels, a significant offset of modern deuterium excess is observed between the two sites. We attribute this offset to a different mix of modern moisture sources, pointing to regional-scale differences in moisture advection toward Greenland. The common long-term deuterium excess Holocene increasing trend is probably related to the increased relative contribution of low-latitude moisture to Greenland snowfall, in response to the change in the Earth obliquity, as symmetrically observed in Antarctica. Three abrupt declines punctuate the GRIP excess record (8.2, 4.5, and 0.35 ka BP), suggesting associated reorganizations of the northern high latitudes hydrological cycle. The 8.2 ka BP event is characterized by (1) a rapid cooling followed by a progressive warming and (2) a deuterium excess cooling restricted to GRIP, therefore totally different from rapid events during glacial times. By contrast, the NorthGRIP deuterium excess record is more stable. We propose that a slightly larger proportion of moisture supplied by local storm tracks to GRIP induces an isotopic compensation mechanism between simultaneous site and source temperature coolings, resulting in a rather temperature-insensitive ?18O profile, together with well-marked deuterium excess amplitudes. NorthGRIP ?18O seems less biased by isotopic processes and should provide a more reliable past temperature record.
Keywords: paleoclimate; polar ice sheet; water cycle; 1041 Geochemistry: Stable isotope geochemistry; 0724 Cryosphere: Ice cores; 1620 Global Change: Climate dynamics; 1655 Global Change: Water cycles; 3344 Atmospheric Processes: Paleoclimatology
Programme: 458
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Ohtaki Toshiki, Kaneshima Satoshi, Kanjo Kenji, . (2012). Seismic structure near the inner core boundary in the south polar region
. J. Geophys. Res., 117(B3), B03312–.
Keywords: P-wave velocity and attenuation, inner and outer core, south polar region, 1507 Core processes, 7203 Body waves, 7207 Core, 8115 Core processes, 8124 Earth's interior: composition and state,
Programme: 133
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Tauzin Benoit, Debayle Eric, Wittlinger Grard, . (2008). The mantle transition zone as seen by global Pds phases: No clear evidence for a thin transition zone beneath hotspots
. J. Geophys. Res., 113(B8), B08309–.
Keywords: P-to-S conversions, mantle transition zone, subduction hotspot plume, 7208 Seismology: Mantle, 7203 Seismology: Body waves, 7240 Seismology: Subduction zones, 8137 Tectonophysics: Hotspots, large igneous provinces, and flood basalt volcanism, 8147 Tectonophysics: Planetary interiors,
Programme: 133
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Legrand M, Preunkert S, Jourdain B, Galle H, Goutail F, Weller R, Savarino J, . (2009). Year-round record of surface ozone at coastal (Dumont d'Urville) and inland (Concordia) sites in East Antarctica
. J. Geophys. Res., 114(D20), D20306–.
Keywords: Ozone, Antarctica, 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry, 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry, 0330 Atmospheric Composition and Structure: Geochemical cycles,
Programme: 414;903;904;1011
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. (2007). Comparison of polar ozone loss rates simulated by one-dimensional and three-dimensional models with Match observations in recent Antarctic and Arctic winters. J. Geophys. Res., 112.
Abstract: Simulations of ozone loss rates using a three-dimensional chemical transport model and a box model during recent Antarctic and Arctic winters are compared with experimental loss rates. The study focused on the Antarctic winter 2003, during which the first Antarctic Match campaign was organized, and on Arctic winters 1999/2000, 2002/2003. The maximum ozone loss rates retrieved by the Match technique for the winters and levels studied reached 6 ppbv/sunlit hour and both types of simulations could generally reproduce the observations at 2-sigma error bar level. In some cases, for example, for the Arctic winter 2002/2003 at 475 K level, an excellent agreement within 1-sigma standard deviation level was obtained. An overestimation was also found with the box model simulation at some isentropic levels for the Antarctic winter and the Arctic winter 1999/2000, indicating an overestimation of chlorine activation in the model. Loss rates in the Antarctic show signs of saturation in September, which have to be considered in the comparison. Sensitivity tests were performed with the box model in order to assess the impact of kinetic parameters of the ClO-Cl2O2 catalytic cycle and total bromine content on the ozone loss rate. These tests resulted in a maximum change in ozone loss rates of 1.2 ppbv/sunlit hour, generally in high solar zenith angle conditions. In some cases, a better agreement was achieved with fastest photolysis of Cl2O2 and additional source of total inorganic bromine but at the expense of overestimation of smaller ozone loss rates derived later in the winter.
Keywords: Ozone loss rates; transport model; trajectory model; 0340 Atmospheric Composition and Structure: Middle atmosphere: composition and chemistry; 0341 Atmospheric Composition and Structure: Middle atmosphere: constituent transport and chemistry; 3334 Atmospheric Processes: Middle atmosphere dynamics; 3360 Atmospheric Processes: Remote sensing; 3319 Atmospheric Processes: General circulation
Programme: 209
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Vitale Vito, Petkov Boyan, Goutail Florence, Lanconelli Christian, Lupi Angelo, Mazzola Mauro, Busetto Maurizio, Pazmino Andrea, Schioppo Riccardo, Genoni Laura, Tomasi Claudio, . (2011). Variations of UV Irradiance at Antarctic Station Concordia During the Springs of 2008 and 2009
. Antarctic Science, 23(04), 389–398.
Keywords: ozone depletion, radiation amplification factor, solar UV irradiance, UV index, UV models,
Programme: 209
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Brodier S, Pisanu B, Villers A, Pettex E, Lioret M, Chapuis J-L, Bretagnolle V, . (2011). Responses of seabirds to the rabbit eradication on Ile Verte, sub-Antarctic Kerguelen Archipelago
. 1367-9430, 14(5), 459–465.
Keywords: Oryctolagus cuniculus, invasive mammal, burrowing petrels, brown skua, conservation program, Sub-Antarctic island,
Programme: 136
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