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| Author | Jouzel J., Vimeux F., Caillon N., Delaygue G., Hoffmann G., Masson Delmotte V. & Parre | ||||
| Title | Magnitude of the isotope-temperature scaling for interpretation of central Antarctic ice cores. | Type | Journal Article | ||
| Year | 2003 | Publication | Journal of geophysical research-atmospheres | Abbreviated Journal | J. Geophys. Res. |
| Volume | 108 | Issue | Pages | 1029-1046 | |
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Programme  |
960 | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0148-0227 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 2998 | |||
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| Author | Masson-Delmotte V., Stenni B. & Jouzel J. | ||||
| Title | Common millenial scale variability of Antarctica and southern ocean temperatures during the past 5000 years reconstructed from EPICA Dome C ice core,. | Type | Journal Article | ||
| Year | 2004 | Publication | Holocene | Abbreviated Journal | |
| Volume | 2 | Issue | Pages | 145-151 | |
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| Programme |
960 | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0959-6836 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 2999 | |||
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| Author | Goose H., Masson-Delmotte V., Renssen H., Delmotte M., Fichefet T., Morgan V., van Ommen T., Khim B.K. & Stenni B. | ||||
| Title | A delayged medieval warm period in the Southern Ocean? | Type | Journal Article | ||
| Year | 2004 | Publication | Geophysical research letters | Abbreviated Journal | |
| Volume | 31(6) | Issue | Pages | 113-117 | |
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960 | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0094-8276 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3000 | |||
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| Author | Duplessy J.C., Cortijo E., Masson Delmotte V. & Paillard D. | ||||
| Title | Reconstructing the variability of the climate system : facts and theories. | Type | Journal Article | ||
| Year | 2005 | Publication | C.R. Acad. Sci. Paris | Abbreviated Journal | |
| Volume | 337 | Issue | 10-11 | Pages | 888-896 |
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| Abstract | On the 102- to 103-year timescale, internal reorganizations of the climate system result in abrupt climatic changes of great magnitude. Although a large body of data has been obtained, the physical mechanisms responsible for these changes are still poorly understood. Instrumental data are too short to fully record the variability of the climate system. Palaeoclimatic records provide estimates of the past atmospheric composition, temperature, precipitation, vegetation, extension of glaciers, and past ocean circulation. On the 104- to 106-year timescale, the astronomical theory of palaeoclimates accounts for most of the reconstructed variations. To cite this article: J.-C. Duplessy et al., C. R. Geoscience 337 (2005). | ||||
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960 | ||||
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| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3001 | |||
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| Author | Landais A., Barnola J.M., Awamura K., Caillon N., Delmotte M., Van Ommen T., Dreyfus G., Jouzel J., Masson-Delmotte V., Minster B., Freitag J., Leuenberger M., Schwander J., Huber C., Etheridge D. & Morgan V. | ||||
| Title | Firn-air d15N in modern polar sites and glacial-interglacial ice: a model-data mismatch during glacial periods in Antarctica? | Type | Journal Article | ||
| Year | 2006 | Publication | Quaternary science reviews | Abbreviated Journal | Quat Sci Rev |
| Volume | 25 | Issue | 1-2 | Pages | 49-62 |
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| Abstract | The phase lag between atmospheric composition (air bubbles) and temperature (water isotopes) can be quantified from ice cores provided that the age difference between entrapped air and the surrounding air can be correctly estimated. This difference depends on the lock-in depth (LID), when air no longer mixes with the atmosphere. The LID can be estimated from firnification models or from the air isotopic composition (?15N and ?40Ar). Both methods give consistent results for Greenland and one coastal site in Antarctica (Byrd). New firn measurements in Greenland (NorthGRIP) and Antarctica (Berkner Island, BAS depot, Dome C) confirm that firnification models correctly reproduce the present LID over a large range of surface conditions. However, a systematic mismatch is observed for the Last Glacial Maximum (LGM) in East Antarctic sites (Vostok, Dome C, Dome F) questioning the model's validity. Here we use new ?15N measurements from two coastal Antarctic sites (Kohnen Station and Law Dome) providing depth estimates again distinct from firnification model calculations. We show that this discrepancy can be resolved by revising the estimate of past accumulation rates. ?15N measurements can therefore help to constrain past accumulation rate and improve ice core dating. | ||||
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960 | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0277-3791 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3002 | |||
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| Author | EPICA Community Members | ||||
| Title | Eight glacial cycles from an Antarctic ice core | Type | Journal Article | ||
| Year | 2004 | Publication | Nature | Abbreviated Journal | Nature |
| Volume | 429 | Issue | 6992 | Pages | 623-628 |
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| Abstract | The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate variability was smaller before that time, but such records are often poorly resolved. Moreover, it is not possible to infer the abundance of greenhouse gases in the atmosphere from marine records. Here we report the recovery of a deep ice core from Dome C, Antarctica, that provides a climate record for the past 740,000 years. For the four most recent glacial cycles, the data agree well with the record from Vostok. The earlier period, between 740,000 and 430,000 years ago, was characterized by less pronounced warmth in interglacial periods in Antarctica, but a higher proportion of each cycle was spent in the warm mode. The transition from glacial to interglacial conditions about 430,000 years ago (Termination V) resembles the transition into the present interglacial period in terms of the magnitude of change in temperatures and greenhouse gases, but there are significant differences in the patterns of change. The interglacial stage following Termination V was exceptionally long—28,000 years compared to, for example, the 12,000 years recorded so far in the present interglacial period. Given the similarities between this earlier warm period and today, our results may imply that without human intervention, a climate similar to the present one would extend well into the future.
EPICA community members* (participants are listed alphabetically) Laurent Augustin1, Carlo Barbante2, Piers R. F. Barnes3, Jean Marc Barnola1, Matthias Bigler4, Emiliano Castellano5, Olivier Cattani6, Jerome Chappellaz1, Dorthe Dahl-Jensen7, Barbara Delmonte1,8, Gabrielle Dreyfus6, Gael Durand1, Sonia Falourd6, Hubertus Fischer9, Jacqueline Fluckiger4, Margareta E. Hansson10, Philippe Huybrechts9, Gerard Jugie11, Sigfus J. Johnsen7, Jean Jouzel6, Patrik Kaufmann4, Josef Kipfstuhl9, Fabrice Lambert4, Vladimir Y. Lipenkov12, Genevieve C. Littot3, Antonio Longinelli13, Reginald Lorrain14, Valter Maggi8, Valerie Masson-Delmotte6, Heinz Miller9, Robert Mulvaney3, Johannes Oerlemans15, Hans Oerter9, Giuseppe Orombelli8, Frederic Parrenin1,6, David A. Peel3, Jean-Robert Petit1, Dominique Raynaud1, Catherine Ritz1, Urs Ruth9, Jakob Schwander4, Urs Siegenthaler4, Roland Souchez14, Bernhard Stauffer4, Jorgen Peder Steffensen7, Barbara Stenni16, Thomas F. Stocker4, Ignazio E. Tabacco17, Roberto Udisti5, Roderik S. W. van de Wal15, Michiel van den Broeke15, Jerome Weiss1, Frank Wilhelms9, Jan-Gunnar Winther18, Eric W. Wolff3 & Mario Zucchelli19* 1, Laboratoire de Glaciologie et Geophysique de l’Environnement (CNRS), BP 96, 38402 St Martin d’Heres Cedex, France; 2, Environmental Sciences Department, University of Venice, Calle Larga S. Marta, 2137, I-30123 Venice, Italy; 3, British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK; 4, Climate and Environmental Physics, Physics Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland; 5, Department of Chemistry—Analytical Chemistry Section, Scientific Pole—University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy; 6, Institut Pierre Simon Laplace/Laboratoire des Sciences du Climat et de l’Environnement, UMR CEA-CNRS 1572, CE Saclay, Orme des Merisiers, 91191 Gif-Sur-Yvette, France; 7, Niels Bohr Institute for Astronomy, Physics and Geophysics, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark; 8, University of Milano-Bicocca, Dipartimento di Scienze Ambiente e Territorio, Piazza della Scienza 1, I-20126 Milan, Italy; 9, Alfred-Wegener-Institute for Polar- und Marine Research (AWI), Postfach 120161, D-27515 Bremerhaven, Germany; 10, Department of Physical Geography and Quaternary Geology, Stockholm University, S-106 91 Stockholm, Sweden; 11, Institut Polaire Francais–Paul Emile Victor (IPEV), BP 75, 29280 Plouzane, France; 12, Arctic and Antarctic Research Institute, 38 Beringa Street, 199397 St Petersburg, Russia; 13, Department of Earth Sciences, University of Parma, Parco Area delle Scienze 157/A, I-43100 Parma, Italy; 14, Departement des Sciences de la Terre et de l’Environnement, Faculte des Sciences, CP 160/03, Universite Libre de Bruxelles, 50 avenue FD Roosevelt, B1050 Brussels, Belgium; 15, Institute for Marine and Atmospheric Research Utrecht (IMAU), Princetonplein 5, 3584 CC Utrecht, The Netherlands; 16, Department of Geological, Environmental and Marine Sciences, University of Trieste, Via E. Weiss 2, I-34127 Trieste, Italy; 17, Earth Science Department, University of Milan, Via Cicognara 7, 20129 Milano, Italy; 18, Norwegian Polar Institute, N-9296 Tromsø, Norway; 19, ENEA, CRE Casaccia, PO Box 2400, Via Anguillarese 301, 00060 S. Maria di Galleria (RM), Italy. *Deceased. |
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960 | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0028-0836 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | 10.1038/nature02599 | Approved | yes | ||
| Call Number | IPEV @ Thierry.Lemaire @ | Serial | 5553 | ||
| Permanent link to this record | |||||
| Author | Barnes, P.R.F.; Wolff, E.W.; Mader, H.M.; Udisti, R.; Castellano, E.; Röthlisberger, R. | ||||
| Title | Evolution of chemical peak shapes in the Dome C, Antarctica, ice core | Type | Journal Article | ||
| Year | 2003 | Publication | Journal of geophysical research-atmospheres | Abbreviated Journal | J. Geophys. Res. |
| Volume | 108 | Issue | Pages | ||
| Keywords | 1863 Hydrology: Snow and ice; 9310 Information Related to Geographic Region: Antarctica; 3344 Meteorology and Atmospheric Dynamics: Paleoclimatology; 3999 Mineral Physics: General or miscellaneous; 0325 Atmospheric Composition and Structure: Evolution of the atmosphere | ||||
| Abstract | Interpretation of the chemical layers measured in ice cores requires knowledge of processes occurring after their deposition on the ice sheet. We present evidence for the diffusion of soluble ions in the top 350 m of the Dome C ice core, Antarctica, that helps in explaining the unexpectedly broad volcanic peaks observed at depth. A windowed-differencing operation applied to chemical time series indicates a damping of the signals over the past 11,000 years, independent of minor climatic variation, for sulfate and chloride, but not sodium. This implies a diffusive process is transporting both sulfate and chloride ions while the sodium ions remain fixed. We estimate the effective diffusivity in the core to be 4.7 × 10?8 m2 yr?1 for sulfate and 2.0 × 10?7 m2 yr?1 for chloride. These values are not high enough to significantly disrupt chemical interpretation in this section of core, but could be significant for older ice. The temperature of this section of ice (?53°C) implies that the predominantly acidic sulfate (and possibly chloride ions) will exist in the liquid phase while the sodium may be solid. We propose and develop two new mechanisms that could explain the observed solute movement. One involves the diffusion of solute through a connected vein network driven by liquid concentration imbalances instigated by the process of grain growth. The other considers a system of discontinuous veins where grain growth increases connectivity between isolated vein clusters allowing the spread of solute. In both mechanisms, the effective diffusivity is governed indirectly by grain growth rate; this may be a significant factor controlling effective diffusion in other cores. | ||||
| Programme |
960 | ||||
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| Publisher | American Geophysical Union | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0148-0227 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | IPEV @ Thierry.Lemaire @ | Serial | 5591 | ||
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| Author | Delmonte B., Petit J.R., Krinner G., Maggi V., Jouzel J. & Udisti R. | ||||
| Title | Ice core evidence for secular variability and 200-year dipolar oscillations in atmospheric circulation over East Antarctica during the Holocene. | Type | Journal Article | ||
| Year | 2005 | Publication | Climate dynamics | Abbreviated Journal | |
| Volume | 24 | Issue | Pages | 641-654 | |
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| Programme |
960 | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0930-7575 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3123 | |||
| Permanent link to this record | |||||
| Author | Krinner G. & Werner M. | ||||
| Title | Impact of precipitation seasonality changes on isotopic signals in polar ice cores : A multi-model analysis. | Type | Journal Article | ||
| Year | 2003 | Publication | Earth and planetary science letters | Abbreviated Journal | Earth Planet. Sci. Lett. |
| Volume | 216 | Issue | Pages | 525-538 | |
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| Programme |
960 | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0012-821X | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3144 | |||
| Permanent link to this record | |||||
| Author | Siegenthaler U., Stocker T., Monnin E., Luthi D., Schwander J., Stauffer B., Raynaud D., Barnola J.M., Fischer H., Masson-Delmotte V. & Jouzel J. | ||||
| Title | Stable Carbon Cycle-Climate Relationship During the Late Pleistocene. | Type | Journal Article | ||
| Year | 2005 | Publication | Science | Abbreviated Journal | Science |
| Volume | 310 | Issue | Pages | 1313-1316 | |
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| Programme |
960 | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0036-8075 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Serial | 3193 | |||
| Permanent link to this record | |||||