Search Results - "Savarino, Joël"

Foliar uptake of atmospheric nitrate by two dominant subalpine plants: insights from in situ triple-isotope analysis by Bourgeois, Ilann, Clément, Jean-Christophe, Caillon, Nicolas, Savarino, Joël

“…The significance of foliar uptake of nitrogen (N) compounds in natural conditions is not well understood, despite growing evidence of its importance to plant…”
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Multiple sources for tephra from AD 1259 volcanic signal in Antarctic ice cores by Narcisi, Biancamaria, Petit, Jean Robert, Delmonte, Barbara, Batanova, Valentina, Savarino, Joël

“…Strong volcanic signals simultaneously recorded in polar ice sheets are commonly assigned to major low-latitude eruptions that dispersed large quantities of…”
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Measurement report: Nitrogen isotopes (δ 15 N) and first quantification of oxygen isotope anomalies (Δ 17 O, δ 18 O) in atmospheric nitrogen dioxide by Albertin, Sarah, Savarino, Joël, Bekki, Slimane, Barbero, Albane, Caillon, Nicolas

“…The isotopic composition of nitrogen and oxygen in nitrogen dioxide (NO2) potentially carries a wealth of information about the dynamics of the nitrogen oxides…”
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Nitrogen isotopes in ice core nitrate linked to anthropogenic atmospheric acidity change by Geng, Lei, Alexander, Becky, Cole-Dai, Jihong, Steig, Eric J., Savarino, Joël, Sofen, Eric D., Schauer, Andrew J.

“…Nitrogen stable isotope ratio (δ ¹⁵N) in Greenland snow nitrate and in North American remote lake sediments has decreased gradually beginning as early as ∼1850…”
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Mass-Independent Sulfur Isotopic Compositions in Stratospheric Volcanic Eruptions by Baroni, Mélanie, Thiemens, Mark H, Delmas, Robert J, Savarino, Joël

“…The observed mass-independent sulfur isotopic composition (Δ³³S) of volcanic sulfate from the Agung (March 1963) and Pinatubo (June 1991) eruptions recorded in…”
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Sunlight-driven nitrate loss records Antarctic surface mass balance by Akers, Pete D., Savarino, Joël, Caillon, Nicolas, Servettaz, Aymeric P. M., Le Meur, Emmanuel, Magand, Olivier, Martins, Jean, Agosta, Cécile, Crockford, Peter, Kobayashi, Kanon, Hattori, Shohei, Curran, Mark, van Ommen, Tas, Jong, Lenneke, Roberts, Jason L.

“…Standard proxies for reconstructing surface mass balance (SMB) in Antarctic ice cores are often inaccurate or coarsely resolved when applied to more…”
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Diurnal variations in oxygen and nitrogen isotopes of atmospheric nitrogen dioxide and nitrate: implications for tracing NOx oxidation pathways and emission sources by Albertin, Sarah, Savarino, Joël, Bekki, Slimane, Barbero, Albane, Grilli, Roberto, Fournier, Quentin, Ventrillard, Irène, Caillon, Nicolas, Law, Kathy

“…The oxygen (Δ17O) and nitrogen (δ15N) isotopic compositions of atmospheric nitrate (NO3-) are widely used as tracers of its formation pathways, precursor…”
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Cold decade (AD 1810-1819) caused by Tambora (1815) and another (1809) stratospheric volcanic eruption by Cole-Dai, Jihong, Ferris, David, Lanciki, Alyson, Savarino, Joël, Baroni, Mélanie, Thiemens, Mark H.

“…Climate records indicate that the decade of AD 1810–1819 including “the year without a summer” (1816) is probably the coldest during the past 500 years or…”
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Photolytic modification of seasonal nitrate isotope cycles in East Antarctica by Akers, Pete D, Savarino, Joël, Caillon, Nicolas, Magand, Olivier, Le Meur, Emmanuel

“…Nitrate in Antarctic snow has seasonal cycles in nitrogen and oxygen isotopic ratios that reflect its sources and atmospheric formation processes, and as a…”
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Geological evidence of extensive N-fixation by volcanic lightning during very large explosive eruptions by Aroskay, Adeline, Martin, Erwan, Bekki, Slimane, Le Pennec, Jean-Luc, Savarino, Joël, Temel, Abidin, Manrique, Nelida, Aguilar, Rigoberto, Rivera, Marco, Guillou, Hervé, Balcone-Boissard, Hélène, Phelip, Océane, Szopa, Sophie

“…Most of the nitrogen (N) accessible for life is trapped in dinitrogen (N ), the most stable atmospheric molecule. In order to be metabolized by living…”
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Discovering Nature’s Fingerprints: Isotope Ratio Analysis on Bioanalytical Mass Spectrometers by Neubauer, Cajetan, Kantnerová, Kristýna, Lamothe, Alexis, Savarino, Joel, Hilkert, Andreas, Juchelka, Dieter, Hinrichs, Kai-Uwe, Elvert, Marcus, Heuer, Verena, Elsner, Martin, Bakkour, Rani, Julien, Maxime, Öztoprak, Merve, Schouten, Stefan, Hattori, Shohei, Dittmar, Thorsten

“…For a generation or more, the mass spectrometry that developed at the frontier of molecular biology was worlds apart from isotope ratio mass spectrometry, a…”
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Tracing the Fate of Atmospheric Nitrate in a Subalpine Watershed Using Δ17O by Bourgeois, Ilann, Savarino, Joël, Caillon, Nicolas, Angot, Hélène, Barbero, Albane, Delbart, Franck, Voisin, Didier, Clément, Jean-Christophe

“…Nitrogen is an essential nutrient for life on Earth, but in excess, it can lead to environmental issues (e.g., N saturation, loss of biodiversity,…”
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Photochemical box modelling of volcanic SO2 oxidation: isotopic constraints by Galeazzo, Tommaso, Bekki, Slimane, Martin, Erwan, Savarino, Joël, Arnold, Stephen R

“…The photochemical box model CiTTyCAT is used to analyse the absence of oxygen mass-independent anomalies (O-MIF) in volcanic sulfates produced in the…”
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Understanding mercury oxidation and air–snow exchange on the East Antarctic Plateau: a modeling study by Song, Shaojie, Angot, Hélène, Selin, Noelle E., Gallée, Hubert, Sprovieri, Francesca, Pirrone, Nicola, Helmig, Detlev, Savarino, Joël, Magand, Olivier, Dommergue, Aurélien

“…Distinct diurnal and seasonal variations of mercury (Hg) have been observed in near-surface air at Concordia Station on the East Antarctic Plateau, but the…”
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Summer variability of the atmospheric NO2: NO ratio at Dome C on the East Antarctic Plateau by Barbero, Albane, Grilli, Roberto, Frey, Markus M, Blouzon, Camille, Helmig, Detlev, Caillon, Nicolas, Savarino, Joël

“…Previous Antarctic summer campaigns have shown unexpectedly high levels of oxidants in the lower atmosphere of the continental plateau and at coastal regions,…”
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Air–snow exchange of nitrate: a modelling approach to investigate physicochemical processes in surface snow at Dome C, Antarctica by Bock, Josué, Savarino, Joël, Picard, Ghislain

“…Snowpack is a multiphase (photo)chemical reactor that strongly influences the air composition in polar and snow-covered regions. Snowpack plays a special role…”
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Large sulfur-isotope anomaly in nonvolcanic sulfate aerosol and its implications for the Archean atmosphere by Shaheen, Robina, Abaunza, Mariana M., Jackson, Teresa L., McCabe, Justin, Savarino, Joël, Thiemens, Mark H.

“…Sulfur-isotopic anomalies have been used to trace the evolution of oxygen in the Precambrian atmosphere and to document past volcanic eruptions. High-precision…”
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Oxygen isotope mass balance of atmospheric nitrate at Dome C, East Antarctica, during the OPALE campaign by Savarino, Joël, Vicars, William C, Legrand, Michel, Preunkert, Suzanne, Jourdain, Bruno, Frey, Markus M, Kukui, Alexandre, Caillon, Nicolas, Gil Roca, Jaime

“…Variations in the stable oxygen isotope composition of atmospheric nitrate act as novel tools for studying oxidative processes taking place in the troposphere…”
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Inter-annual variability of surface ozone at coastal (Dumont d'Urville, 2004–2014) and inland (Concordia, 2007–2014) sites in East Antarctica by Legrand, Michel, Preunkert, Susanne, Savarino, Joël, Frey, Markus M, Kukui, Alexandre, Helmig, Detlev, Jourdain, Bruno, Jones, Anna E, Weller, Rolf, Brough, Neil, Gallée, Hubert

“…Surface ozone has been measured since 2004 at the coastal East Antarctic site of Dumont d'Urville (DDU), and since 2007 at the Concordia station located on the…”
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Measurement of the 17O-excess (Δ17O) of tropospheric ozone using a nitrite-coated filter by Vicars, William C., Bhattacharya, S. K., Erbland, Joseph, Savarino, Joël

“…RATIONALE The 17O‐excess (Δ17O) of tropospheric ozone (O3) serves as a useful marker in studies of atmospheric oxidation pathways; however, due to the…”
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