Davtian, Nina; Bard, Edouard (2023): Antarctic δ18Oice and atmospheric temperature stacks of the WD, EDC, and EDML ice cores [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.957368, In: Davtian, N; Bard, E (2023): Biomarker indices and concentrations and biomarker-based temperature estimates from the Iberian Margin core MD95-2042, composite Greenland atmospheric temperature record, and Antarctic stacks [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.957377
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Abstract:
This dataset consists in two stacks of three Antarctic records (EDC, EDML, and WD), one for δ18Oice and the other for atmospheric temperature: both stacks are provided with their stacking uncertainties. To build the Antarctic δ18Oice stack, the Antarctic δ18Oice records were resampled every 10 years before centering to zero means and normalization to unit standard deviations over the 140–0 ka BP period (68–0 ka BP for WD). To optimize the continuity between the portions with and without the WD ice core, the Antarctic δ18Oice records were centered to zero means over the 68–67 ka BP period. The resulting Antarctic δ18Oice records were then averaged and stacking uncertainties were calculated as the pooled standard deviation of the stacked Antarctic δ18Oice records divided by the square root of the number of stacked Antarctic δ18Oice records. The final Antarctic δ18Oice stack, expressed in ‰, has the same standard deviation as the δ18Oice record from EDML over the 140–0 ka BP period, and has a zero mean over the 1–0 ka BP. The Antarctic atmospheric temperature stack was built like the Antarctic δ18Oice stack, except that the Antarctic δ18Oice records were corrected for seawater δ18Oice variations before conversion into atmospheric temperature. The employed age model is the one of Davtian and Bard (2023) for Greenland and Antarctic ice-core records.
Keyword(s):
Related to:
Davtian, Nina; Bard, Edouard (2023): A new view on abrupt climate changes and the bipolar seesaw based on paleotemperatures from Iberian Margin sediments. Proceedings of the National Academy of Sciences of the United States of America, 120(12), e2209558120, https://doi.org/10.1073/pnas.2209558120
Source:
Barbante, Carlo; Barnola, Jean-Marc; Becagli, Silvia; Beer, Jürg; Bigler, Matthias; Boutron, Claude F; Blunier, Thomas; Castellano, Emiliano; Cattani, Olivier; Chappellaz, Jérôme A; Dahl-Jensen, Dorthe; Debret, Maxime; Delmonte, Barbara; Dick, Dorothee; Falourd, Sonia; Faria, Sérgio H; Federer, Urs; Fischer, Hubertus; Freitag, Johannes; Frenzel, Andreas; Fritzsche, Diedrich; Fundel, Felix; Gabrielli, Paolo; Gaspari, Vania; Gersonde, Rainer; Graf, Wolfgang; Grigoriev, Dimitri; Hamann, Ilka; Hansson, Margareta E; Hoffmann, Georg; Hutterli, Manuel A; Huybrechts, Philippe; Isaksson, Elisabeth; Johnsen, Sigfús Jóhann; Jouzel, Jean; Kaczmarska, Marzena; Karlin, Torbjörn; Kaufmann, Patrik R; Kipfstuhl, Sepp; Kohno, Mika; Lambert, Fabrice; Lambrecht, Anja; Lambrecht, Astrid; Landais, Amaëlle; Lawer, Gunther; Leuenberger, Markus Christian; Littot, Geneviève C; Loulergue, Laetitia; Lüthi, Dieter; Maggi, Valter; Marino, Federica; Masson-Delmotte, Valerie; Meyer, Hanno; Miller, Heinz; Mulvaney, Robert; Narcisi, Biancamaria; Oerlemans, Johannes; Oerter, Hans; Parrenin, Frédéric; Petit, Jean Robert; Raisbeck, Grant M; Raynaud, Dominique; Röthlisberger, Regine; Ruth, Urs; Rybak, Oleg; Severi, Mirko; Schmitt, Jochen; Schwander, Jakob; Siegenthaler, Urs; Siggaard-Andersen, Marie-Louise; Spahni, Renato; Steffensen, Jørgen Peder; Stenni, Barbara; Stocker, Thomas F; Tison, Jean-Louis; Traversi, Rita; Udisti, Roberto; Valero Delgado, Fernando; van den Broeke, Michiel R; van de Wal, Roderik S W; Wagenbach, Dietmar; Wegner, Anna; Weiler, Karin; Wilhelms, Frank; Winther, Jan-Gunnar; Wolff, Eric William (2006): One-to-one coupling of glacial climate variability in Greenland and Antarctica. Nature, 444, 195-198, https://doi.org/10.1038/nature05301
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Project(s):
Coverage:
Median Latitude: -76.527500 * Median Longitude: 3.769467 * South-bound Latitude: -79.480000 * West-bound Longitude: -112.110000 * North-bound Latitude: -75.002500 * East-bound Longitude: 123.350000
Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2006-01-17T00:00:00
Minimum Elevation: 1766.0 m * Maximum Elevation: 3233.0 m
Event(s):
EDC (EPICA Dome C) * Latitude: -75.100000 * Longitude: 123.350000 * Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00 * Elevation: 3233.0 m * Recovery: 3300 m * Location: Dome C, Antarctica * Campaign: Dome C * Method/Device: Ice drill (ICEDRILL) * Comment: Drill site is 56 km from the site of a previous Dome C core that provided records extending into the last glacial period, and 560 km from the site of the Vostok cores. The completion of the Dome C core was delayed when the first drilling became stuck at 788 m in 1999 (EDC96).
EDML (EPICA Dronning Maud Land, DML28C01_00) * Latitude: -75.002500 * Longitude: 0.068400 * Date/Time Start: 2001-01-10T00:00:00 * Date/Time End: 2006-01-17T00:00:00 * Elevation: 2891.7 m * Recovery: 2774.15 m * Campaign: EPICA-Campaigns * Basis: Kohnen Station * Method/Device: EPICA drill (EDRILL) * Comment: Elevation is given with reference to WGS84
WDC-06A (WAIS Divide) * Latitude: -79.480000 * Longitude: -112.110000 * Elevation: 1766.0 m * Location: Antarctica, west * Method/Device: Ice drill (ICEDRILL)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Core | Core | Davtian, Nina | Stacked ice cores | ||
| 2 | AGE | Age | ka BP | Davtian, Nina | Geocode – Ice-core age model by Davtian and Bard (this study) | |
| 3 | δ18O, water | δ18O H2O | ‰ SMOW | Davtian, Nina | d18O ice anomaly relative to the last millennium (1-0 ka BP) | |
| 4 | δ18O, water, standard deviation | δ18O H2O std dev | ± | Davtian, Nina | Calculated according to Parrenin et al. 2013 | 1-sigma confidence interval obtained by dividing the pooled standard deviation by the number of stacked δ18Oice records (2 stacked records before 68 ka BP and 3 stacked records after 68 ka BP) as in Parrenin et al. (2013) Science (https://doi.org/10.1126/science.1226368) |
| 5 | Temperature, air | TTT | °C | Davtian, Nina | Calculated according to Parrenin et al. 2013; Bintanja et al. 2008 | Air temperature anomaly relative to the last millennium (1-0 ka BP), calculated from the same linear δ18Oice-temperature relationship as Parrenin et al. (2013) Science (https://doi.org/10.1126/science.1226368) after correcting δ18Oice values from changes in ice volume using the δ18Oseawater record by Bintanja et al. (2008) Nature (https://doi.org/10.1038/nature07158) |
| 6 | Temperature, air, standard deviation | TTT std dev | ± | Davtian, Nina | Calculated according to Parrenin et al. 2013 | 1-sigma confidence interval obtained by dividing the pooled standard deviation by the number of stacked air temperature records (2 stacked records before 68 ka BP and 3 stacked records after 68 ka BP) as in Parrenin et al. (2013) Science (https://doi.org/10.1126/science.1226368) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
69900 data points
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