Climate of the Past
Climate of the Past
CP
Articles | Volume 18, issue 5
Articles | Volume 18, issue 5
https://doi.org/10.5194/cp-18-1125-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-18-1125-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 5
Research article
 | 
24 May 2022
Research article |  | 24 May 2022

A multi-ice-core, annual-layer-counted Greenland ice-core chronology for the last 3800 years: GICC21

Giulia Sinnl, Mai Winstrup, Tobias Erhardt, Eliza Cook, Camilla Marie Jensen, Anders Svensson, Bo Møllesøe Vinther, Raimund Muscheler, and Sune Olander Rasmussen

Supplement

https://doi.org/10.5194/cp-18-1125-2022-supplement

Data sets

Chronology for the East GReenland Ice-core Project (EGRIP) S. Mojtabavi, F. Wilhelms, E. Cook, S. M. Davies, G. Sinnl, M. Skov Jensen, D. Dahl-Jensen, A. M. Svensson, B. M. Vinther, S. Kipfstuhl, N. B. Karlsson, S. H. Faria, V. Gkinis, H. A. Kjær, T. Erhardt, S. M. P. Berben, K. H. Nisancioglu, I. Koldtoft, and S. O. Rasmussen https://doi.org/10.1594/PANGAEA.922139

Specific conductivity measured with the dielectric profiling (DEP) technique on the NEEM ice core (down to 1493.295m depth), S. Mojtabavi, F. Wilhelms, E. Cook, S. M. Davies, G. Sinnl, M. Skov Jensen, D. Dahl-Jensen, A. M. Svensson, B. M. Vinther, S., Kipfstuhl, N. B. Karlsson, S. H. Faria, V. Gkinis, H. A. Kjær, T. Erhardt, S. M. P. Berben, K. H. Nisancioglu, I. Koldtoft, and S. O. Rasmussen https://doi.org/10.1594/PANGAEA.922193

Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP) S. O. Rasmussen, P. M. Abbott, T. Blunier, M. Bourne, E. J. Brook, S. L. Buchardt, C. Buizert, J. A. Chappellaz, H. B. Clausen, E. Cook, D. Dahl-Jensen, S. M., Davies, M. Guillevic, S. Kipfstuhl, T. Laepple, I. K. Seierstad, J. P. Severinghaus, J. P. Steffensen, C. Stowasser, A. M. Svensson, P. T. Vallelonga, B. M. Vinther, F. Wilhelms, and M. Winstrup https://doi.org/10.1594/PANGAEA.831528

NOAA/WDS Paleoclimatology - NEEM Ice Core NEEM-1 Time Scale, S. O. Rasmussen, P. M. Abbott, T. Blunier, A. J. Bourne, E. J. Brook, S. L. Buchardt, C. Buizert, J. A. Chappellaz, H. B. Clausen, E. Cook, D. Dahl-Jensen, S. M. Davies, M. Guillevic, S. Kipfstuhl, T. Laepple, I. K. Seierstad, J. Severinghaus, J. P. Steffensen, C. Stowasser, A. M. Svensson, P. Vallelonga, B. M. Vinther, F. Wilhelms, and M. Winstrup https://doi.org/10.25921/gab6-fa09

Specific conductivity measured with the dielectric profiling (DEP) technique on the NGRIP2 ice core (down to 1298.525m depth) S. Mojtabavi, O. Eisen, S. Franke, D. Jansen, D. Steinhage, J. D. Paden, D. Dahl-Jensen, I. Weikusat, J. Eichler, and F. Wilhelms https://doi.org/10.1594/PANGAEA.922306

Specific conductivity measured with the dielectric profiling (DEP) technique on the NGRIP1 ice core (down to 1371.69m depth) S. Mojtabavi, F. Wilhelms, E. Cook, S. M. Davies, G. Sinnl, M. Skov Jensen, D. Dahl-Jensen, A. M. Svensson, B. M. Vinther, S. Kipfstuhl, N. B. Karlsson, S. H. Faria, V. Gkinis, H. A. Kjær, T. Erhardt, S. M. P. Berben, K. H. Nisancioglu, I. Koldtoft, and S. O. Rasmussen https://doi.org/10.1594/PANGAEA.922191

High resolution aerosol concentration data from the Greenland North- GRIP and NEEM deep ice cores T. Erhardt, M. Bigler, U. Federer, G. Gfeller, D. Leuenberger, O. Stowasser, R. Röthlisberger, S. Schüpbach, U. Ruth, B. Twarloh, A. Wegner, K. Goto-Azuma, K. Takayuki, H. A. Kjær, P. T. Vallelonga, M.-L. Siggaard-Andersen, M. E. Hansson, A. K. Benton, L. G. Fleet, R. Mulvaney, E. R. Thomas, N. Abram, T. F. Stocker, and H. Fischer https://doi.org/10.1594/PANGAEA.935838

High-resolution aerosol concentration data from the Greenland NorthGRIP and NEEM deep ice cores T. Erhardt, M. Bigler, U. Federer, G. Gfeller, D. Leuenberger, O. Stowasser, R. Röthlisberger, S. Schüpbach, U. Ruth, B. Twarloh, A. Wegner, K. Goto-Azuma, T. Kuramoto, H. A. Kjær, P. T. Vallelonga, M.-L. Siggaard-Andersen, M. E. Hansson, A. K. Benton, L. G. Fleet, R. Mulvaney, E. R. Thomas, N. Abram, T. F. Stocker, and H. Fischer https://doi.org/10.5194/essd-14-1215-2022

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Short summary
A new Greenland ice-core timescale, covering the last 3800 years, was produced using the machine learning algorithm StratiCounter. We synchronized the ice cores using volcanic eruptions and wildfires. We compared the new timescale to the tree-ring timescale, finding good alignment both between the common signatures of volcanic eruptions and of solar activity. Our Greenlandic timescales is safe to use for the Late Holocene, provided one uses our uncertainty estimate.
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