Search Results - "Barnola, J. M"

Orbital and Millennial Antarctic Climate Variability over the Past 800,000 Years by Jouzel, J., Masson-Delmotte, V., Cattani, O., Dreyfus, G., Falourd, S., Hoffmann, G., Minster, B., Nouet, J., Barnola, J. M., Chappellaz, J., Fischer, H., Gallet, J. C., Johnsen, S., Leuenberger, M., Loulergue, L., Luethi, D., Oerter, H., Parrenin, F., Raisbeck, G., Raynaud, D., Schilt, A., Schwander, J., Selmo, E., Souchez, R., Spahni, R., Stauffer, B., Steffensen, J. P., Stenni, B., Stocker, T. F., Tison, J. L., Werner, M., Wolff, E. W.

“…A high-resolution deuterium profile is now available along the entire European Project for Ice Coring in Antarctica Dome C ice core, extending this climate…”
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Modeling the densification of polar firn including heat diffusion: Application to close-off characteristics and gas isotopic fractionation for Antarctica and Greenland sites by Goujon, C., Barnola, J.-M., Ritz, C.

“…Modeling the densification of polar firn is essential to estimate variations of close‐off characteristics (density, close‐off depth, delta age) in relation…”
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Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation by Frezzotti, M, Stenni, B, Buiron, D, Albani, S, Barbante, C, Bard, E, Barnola, J. M, Baroni, M, Baumgartner, M, Bonazza, M, Capron, E, Castellano, E, Chappellaz, J, Delmonte, B, Falourd, S, Genoni, L, Iacumin, P, Jouzel, J, Kipfstuhl, S, Landais, A, Lemieux-Dudon, B, Maggi, V, Masson-Delmotte, V, Mazzola, C, Minster, B, Montagnat, M, Mulvaney, R, Narcisi, B, Oerter, H, Parrenin, F, Petit, J. R, Ritz, C, Scarchilli, C, Schilt, A, Schüpbach, S, Schwander, J, Selmo, E, Severi, M, Stocker, T. F, Udisti, R

“…Ice-core records of climate from Greenland and Antarctica show asynchronous temperature variations on millennial timescales during the last glacial period. The…”
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Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica by Petit, J. R, Jouzel, J, Raynaud, D, Barkov, N. I, Barnola, J.-M, Basile, I, Bender, M, Chappellaz, J, Davis, M, Delaygue, G, Delmotte, M, Kotlyakov, V. M, Legrand, M, Lipenkov, V. Y, Lorius, C, PÉpin, L, Ritz, C, Saltzman, E, Stievenard, M

“…The recent completion of drilling at Vostok station in East Antarctica has allowed the extension of the ice record of atmospheric composition and climate to…”
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Changes in atmospheric CO2 and its carbon isotopic ratio during the penultimate deglaciation by Lourantou, A., Chappellaz, J., Barnola, J.-M., Masson-Delmotte, V., Raynaud, D.

“…The largest natural increases in atmospheric CO2 concentration as recorded in ice cores occur when the Earth climate abruptly shifts from a glacial to an…”
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Retrieving the paleoclimatic signal from the deeper part of the EPICA Dome C ice core by Tison, J.-L, de Angelis, M, Littot, G, Wolff, E, Fischer, H, Hansson, M, Bigler, M, Udisti, R, Wegner, A, Jouzel, J, Stenni, B, Johnsen, S, Masson-Delmotte, V, Landais, A, Lipenkov, V, Loulergue, L, Barnola, J.-M, Petit, J.-R, Delmonte, B, Dreyfus, G, Dahl-Jensen, D, Durand, G, Bereiter, B, Schilt, A, Spahni, R, Pol, K, Lorrain, R, Souchez, R, Samyn, D

“…An important share of paleoclimatic information is buried within the lowermost layers of deep ice cores. Because improving our records further back in time is…”
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Long-lived halocarbon trends and budgets from atmospheric chemistry modelling constrained with measurements in polar firn by Martinerie, P., Nourtier-Mazauric, E., Barnola, J.-M., Sturges, W. T., Worton, D. R., Atlas, E., Gohar, L. K., Shine, K. P., Brasseur, G. P.

“…The budgets of seven halogenated gases (CFC-11, CFC-12, CFC-113, CFC-114, CFC-115, CCl4 and SF6) are studied by comparing measurements in polar firn air from…”
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Atmospheric CO2 concentrations over the Last Glacial termination by MONNIN, Eric, INDERMÜHLE, Andreas, DÄLLENBACH, André, FLÜCKIGER, Jacqueline, STAUFFER, Bernhard, STOCKER, Thomas F, RAYNAUD, Dominique, BARNOLA, Jean-Marc

“…A record of atmospheric carbon dioxide (CO2) concentration during the transition from the Last Glacial Maximum to the Holocene, obtained from the Dome…”
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Effect of impurities on grain growth in cold ice sheets by Durand, G., Weiss, J., Lipenkov, V., Barnola, J. M., Krinner, G., Parrenin, F., Delmonte, B., Ritz, C., Duval, P., Röthlisberger, R., Bigler, M.

“…On the basis of a detailed study of the ice microstructure of the European Project for Ice Coring in Antarctica (EPICA) ice core at Dome Concordia, Antarctica,…”
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Mercury in the snow and firn at Summit Station, Central Greenland, and implications for the study of past atmospheric mercury levels by Faïn, X., Ferrari, C. P., Dommergue, A., Albert, M., Battle, M., Arnaud, L., Barnola, J.-M., Cairns, W., Barbante, C., Boutron, C.

“…Gaseous Elemental Mercury (Hg° or GEM) was investigated at Summit Station, Greenland, in the interstitial air extracted from the perennial snowpack (firn) at…”
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Gas age–ice age differences and the chronology of the Vostok ice core, 0–100 ka by Bender, M. L., Floch, G., Chappellaz, J., Suwa, M., Barnola, J.-M., Blunier, T., Dreyfus, G., Jouzel, J., Parrenin, F.

“…Gas is trapped in polar ice at depths of ∼50–120 m and is therefore significantly younger than the ice in which it is embedded. The age difference is not well…”
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Age scale of the air in the summit ice: Implication for glacial-interglacial temperature change by Schwander, J., Sowers, T., Barnola, J.‐M., Blunier, T., Fuchs, A., Malaizé, B.

“…The air occluded in ice sheets and glaciers has, in general, a younger age (defined as the time after its isolation from the atmosphere) than the surrounding…”
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New constraints on the gas age-ice age difference along the EPICA ice cores, 0–50 kyr by Loulergue, L., Parrenin, F., Blunier, T., Barnola, J.-M., Spahni, R., Schilt, A., Raisbeck, G., Chappellaz, J.

“…Gas is trapped in polar ice sheets at ~50–120 m below the surface and is therefore younger than the surrounding ice. Firn densification models are used to…”
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20th century trends and budget implications of chloroform and related tri-and dihalomethanes inferred from firn air by Worton, D. R., Sturges, W. T., Schwander, J., Mulvaney, R., Barnola, J.-M., Chappellaz, J.

“…Four trihalomethane (THM; CHCl3, CHBrCl2, CHBr2Cl and CHBr3) and two dihalomethane (DHM; CH2BrCl and CH2Br2) trace gases have been measured in air extracted…”
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Variations in atmospheric N2O concentration during abrupt climatic changes by FLÜCKIGER, J, DÄLLENBACH, A, BLUNIER, T, STAUFFER, B, STOCKER, T. F, RAYNAUD, D, BARNOLA, J.-M

“…Nitrous oxide (N2O) is an important greenhouse gas that is presently increasing at a rate of 0.25 percent per year. Records measured along two ice cores from…”
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A continuous record of temperature evolution over a sequence of Dansgaard-Oeschger events during Marine Isotopic Stage 4 (76 to 62 kyr BP) by Landais, A., Barnola, J. M., Masson-Delmotte, V., Jouzel, J., Chappellaz, J., Caillon, N., Huber, C., Leuenberger, M., Johnsen, S. J.

“…Our knowledge of the temperature evolution over Greenland during Dansgaard‐Oeschger events (DO) is currently qualitatively described through the water isotopic…”
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"EDML1": a chronology for the EPICA deep ice core from Dronning Maud Land, Antarctica, over the last 150 000 years by Ruth, U., Barnola, J.-M., Beer, J., Bigler, M., Blunier, T., Castellano, E., Fischer, H., Fundel, F., Huybrechts, P., Kaufmann, P., Kipfstuhl, S., Lambrecht, A., Morganti, A., Oerter, H., Parrenin, F., Rybak, O., Severi, M., Udisti, R., Wilhelms, F., Wolff, E.

“…A chronology called EDML1 has been developed for the EPICA ice core from Dronning Maud Land (EDML). EDML1 is closely interlinked with EDC3, the new chronology…”
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Synchronization of ice core records via atmospheric gases by Blunier, T., Spahni, R., Barnola, J.-M., Chappellaz, J., Loulergue, L., Schwander, J.

“…To interpret new high resolution climate records it becomes more and more important to know about the succession of climate events. Such knowledge is hard to…”
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Constraints on N2O budget changes since pre-industrial time from new firn air and ice core isotope measurements by Bernard, Serge, Röckmann, T., Kaiser, J., Barnola, J.-M., Fischer, H., Blunier, T., Chappellaz, J.

“…A historical record of changes in the N2O isotope composition is important for a better understanding of the global N2O atmospheric budget. Here we have…”
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Timing of the Antarctic cold reversal and the atmospheric CO2 increase with respect to the Younger Dryas Event by Blunier, T., Schwander, J., Stauffer, B., Stocker, T., Dällenbach, A., Indermühle, A., Tschumi, J., Chappellaz, J., Raynaud, D., Barnola, J.-M.

“…The transition from the Last Glacial to the Holocene is a key period for understanding the mechanisms of global climate change. Ice cores from the large polar…”
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