Sub-millennial climate variability from high-resolution water isotopes in the EPICA Dome C ice core
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Sub-millennial climate variability from high-resolution water isotopes in the EPICA Dome C ice core. / Grisart, Antoine; Casado, Mathieu; Gkinis, Vasileios; Vinther, Bo; Naveau, Philippe; Vrac, Mathieu; Laepple, Thomas; Minster, Benedicte; Prie, Frederic; Stenni, Barbara; Fourre, Elise; Larsen, Hans-Christian Steen; Jouzel, Jean; Werner, Martin; Pol, Katy; Masson-Delmotte, Valerie; Hoerhold, Maria; Popp, Trevor; Landais, Amaelle.
In: Climate of the Past, Vol. 18, No. 10, 17.10.2022, p. 2289-2301.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Sub-millennial climate variability from high-resolution water isotopes in the EPICA Dome C ice core
AU - Grisart, Antoine
AU - Casado, Mathieu
AU - Gkinis, Vasileios
AU - Vinther, Bo
AU - Naveau, Philippe
AU - Vrac, Mathieu
AU - Laepple, Thomas
AU - Minster, Benedicte
AU - Prie, Frederic
AU - Stenni, Barbara
AU - Fourre, Elise
AU - Larsen, Hans-Christian Steen
AU - Jouzel, Jean
AU - Werner, Martin
AU - Pol, Katy
AU - Masson-Delmotte, Valerie
AU - Hoerhold, Maria
AU - Popp, Trevor
AU - Landais, Amaelle
PY - 2022/10/17
Y1 - 2022/10/17
N2 - The EPICA Dome C (EDC) ice core provides the longest continuous climatic record, covering the last 800 000 years (800 kyr). A unique opportunity to investigate decadal to millennial variability during past glacial and interglacial periods is provided by the high-resolution water isotopic record (delta O-18 and delta D) available for the EDC ice core. We present here a continuous compilation of the EDC water isotopic record at a sample resolution of 11 cm, which consists of 27 000 delta O-18 measurements and 7920 delta D measurements (covering, respectively, 94 % and 27 % of the whole EDC record), including published and new measurements (2900 for both delta O-18 and delta D) for the last 800 kyr. Here, we demonstrate that repeated water isotope measurements of the same EDC samples from different depth intervals obtained using different analytical methods are comparable within analytical uncertainty. We thus combine all available EDC water isotope measurements to generate a high-resolution (11 cm) dataset for the past 800 kyr. A frequency decomposition of the most complete delta O-18 record and a simple assessment of the possible influence of diffusion on the measured profile shows that the variability at the multi-decadal to multi-centennial timescale is higher during glacial than during interglacial periods and higher during early interglacial isotopic maxima than during the Holocene. This analysis shows as well that during interglacial periods characterized by a temperature optimum at the beginning, the multi-centennial variability is strongest over this temperature optimum.
AB - The EPICA Dome C (EDC) ice core provides the longest continuous climatic record, covering the last 800 000 years (800 kyr). A unique opportunity to investigate decadal to millennial variability during past glacial and interglacial periods is provided by the high-resolution water isotopic record (delta O-18 and delta D) available for the EDC ice core. We present here a continuous compilation of the EDC water isotopic record at a sample resolution of 11 cm, which consists of 27 000 delta O-18 measurements and 7920 delta D measurements (covering, respectively, 94 % and 27 % of the whole EDC record), including published and new measurements (2900 for both delta O-18 and delta D) for the last 800 kyr. Here, we demonstrate that repeated water isotope measurements of the same EDC samples from different depth intervals obtained using different analytical methods are comparable within analytical uncertainty. We thus combine all available EDC water isotope measurements to generate a high-resolution (11 cm) dataset for the past 800 kyr. A frequency decomposition of the most complete delta O-18 record and a simple assessment of the possible influence of diffusion on the measured profile shows that the variability at the multi-decadal to multi-centennial timescale is higher during glacial than during interglacial periods and higher during early interglacial isotopic maxima than during the Holocene. This analysis shows as well that during interglacial periods characterized by a temperature optimum at the beginning, the multi-centennial variability is strongest over this temperature optimum.
KW - ANTARCTIC ICE
KW - CHRONOLOGY AICC2012
KW - DEUTERIUM DATA
KW - TEMPERATURE
KW - GREENLAND
KW - RECORDS
KW - DIFFUSION
KW - HYDROGEN
KW - CYCLES
KW - SIGNAL
U2 - 10.5194/cp-18-2289-2022
DO - 10.5194/cp-18-2289-2022
M3 - Journal article
VL - 18
SP - 2289
EP - 2301
JO - Climate of the Past
JF - Climate of the Past
SN - 1814-9324
IS - 10
ER -
ID: 323616245