EPICA Dome C - Timescales EDC3 Parrenin, F.; Barnola, J.M.; Beer, J.; Blunier, T.; Castellano, E.; Chappellaz, J.A.; Dreyfus, G.; Fischer, H.; Fujita, S.; Jouzel, J.; Kawamura, K.; Lemieux-Dudon, B.; Loulergue, L.; Masson-Delmotte, V.; Narcisi, B.; Petit, J.-R.; Raisbeck, G.M.; Raynaud, D.; Ruth, U.; Schwander, J.; Severi, M.; Spahni, R.; Svensson, A.M.; Udisti, R.; Waelbroeck, C.; Wolff, E.W. Parrenin, F. Barnola, J.M. Beer, J. Blunier, T. Castellano, E. Chappellaz, J.A. Dreyfus, G. Fischer, H. Fujita, S. Jouzel, J. Kawamura, K. Lemieux-Dudon, B. Loulergue, L. Masson-Delmotte, V. Narcisi, B. Petit, J.-R. Raisbeck, G.M. Raynaud, D. Ruth, U. Schwander, J. Severi, M. Spahni, R. Svensson, A.M. Udisti, R. Waelbroeck, C. Wolff, E.W. earth science/paleoclimate/ice cores (ice age,null,null,calendar year before present,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (sample identification,null,null,null,null,ice cores,null,null,C,null) earth science/paleoclimate/ice cores (depth,null,null,meter,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (gas age,null,null,calendar year before present,null,ice cores,null,null,N,null) earth science/paleoclimate/ice core (EPICA Dome C>LATITUDE -75.1>LONGITUDE 123.4) The EPICA (European Project for Ice Coring in Antarctica) Dome C drilling in East Antarctica has now been completed to a depth of 3260 m, at only a few meters above bedrock. Here we present the new EDC3 chronology, which is based on the use of 1) a snow accumulation and mechanical flow model, and 2) a set of independent age markers along the core. These are obtained by pattern matching of recorded parameters to either absolutely dated paleoclimatic records, or to insolation variations. We show that this new time scale is in excellent agreement with the Dome Fuji and Vostok ice core time scales back to 100 kyr within 1 kyr. Discrepancies larger than 3 kyr arise during MIS 5.4, 5.5 and 6, which points to anomalies in either snow accumulation or mechanical flow during these time periods. We estimate that EDC3 gives accurate event durations within 20% (2 sigma) back to MIS11 and accurate absolute ages with a maximum uncertainty of 6 kyr back to 800 kyr. STUDY NOTES: Timescale EDC3 for the EPICA Dome C ice core, both for the ice matrix and gas bubbles. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Parrenin, F. Investigator : Barnola, J.M. Investigator : Beer, J. Investigator : Blunier, T. Investigator : Castellano, E. Investigator : Chappellaz, J.A. Investigator : Dreyfus, G. Investigator : Fischer, H. Investigator : Fujita, S. Investigator : Jouzel, J. Investigator : Kawamura, K. Investigator : Lemieux-Dudon, B. Investigator : Loulergue, L. Investigator : Masson-Delmotte, V. Investigator : Narcisi, B. Investigator : Petit, J.-R. Investigator : Raisbeck, G.M. Investigator : Raynaud, D. Investigator : Ruth, U. Investigator : Schwander, J. Investigator : Severi, M. Investigator : Spahni, R. Investigator : Svensson, A.M. Investigator : Udisti, R. Investigator : Waelbroeck, C. Investigator : Wolff, E.W. 2007-09-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/6081 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc1-edc2-timescale.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc3-timescale.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc1-edc2-timescale.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc3-timescale.txt English https://www.ncdc.noaa.gov/paleo/study/6081 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc1-edc2-timescale.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc3-timescale.txt Parrenin, F., J.-M. Barnola, J. Beer, T. Blunier, E. Castellano, J. Chappellaz, G. Dreyfus, H. Fischer, S. Fujita, J. Jouzel, K. Kawamura, B. Lemieux-Dudon, L. Loulergue, V. Masson-Delmotte, B. Narcisi, J.-R. Petit, G. Raisbeck, D. Raynaud, U. Ruth, J. Schwander, M. Severi, R. Spahni, J. P. Steffensen, A. Svensson, R. Udisti, C. Waelbroeck, and E. Wolff2007The EDC3 chronology for the EPICA Dome C ice coreClimate of the Past3485-497 START YEAR: -799662 AD * END YEAR: 2000 AD 123.4 -75.1 123.4 -75.1