High precision correlations of Greenland and Antarctic ice core records over the last 100 kyr

Michael L. Bender, Bruno Malaize, Joseph Orchardo, Todd Anthony Sowers, Jean Jouzet

Research output: Chapter in Book/Report/Conference proceedingChapter

50 Citations (Scopus)

Abstract

We have remeasured the δ18O of O2 and δ15N of N2 in trapped gases in the GISP2 and Vostok ice cores, and recalculated variations with depth in the δ18O of paleoatmospheric O2. The new records have improved precision and resolution, allowing us to correlate the two ice cores using δ18O of O2 as a time-stratigraphic marker with about half the previous uncertainty in relative ages. We transfer the relative timescales from the gas records to the ice by correcting for differences in the age of the ice and the trapped gas. We then compare records of isotopic temperature vs. time for the GISP2 and Vostok cores. Our comparison confirms that all 6 long (> 2 kyr) interstadial events found in GISP2 between 35-75 ka also occur at Vostok, and strongly suggests that the 9 short GISP2 interstadials occurring within this time period have counterparts at Vostok as well. On average, long and short interstadial events at Vostok and GISP2 are in phase. Various uncertainties, however, allow for corresponding events to be out of phase by as much as 1.4 kyr on average. The near synchroneity in climate change between GISP and Vostok during interstadial events contrasts with the climate phasing during Termination 1, when long, slow warmings as well as millennial events were largely out of phase.

Original languageEnglish (US)
Title of host publicationMechanisms of Global Climate Change at Millennial Time Scales, 1999
EditorsLloyd D. Keigwin, Peter U. Clark, Robert S. Webb
PublisherBlackwell Publishing Ltd
Pages149-164
Number of pages16
ISBN (Electronic)9781118664742
ISBN (Print)9780875900957
DOIs
StatePublished - Jan 1 1999

Publication series

NameGeophysical Monograph Series
Volume112
ISSN (Print)0065-8448
ISSN (Electronic)2328-8779

Fingerprint

Greenland
interstadial
ice core
ice
gas
gases
new record
climate change
warming
markers
climate
timescale
heating
temperature

All Science Journal Classification (ASJC) codes

  • Geophysics

Cite this

Bender, M. L., Malaize, B., Orchardo, J., Sowers, T. A., & Jouzet, J. (1999). High precision correlations of Greenland and Antarctic ice core records over the last 100 kyr. In L. D. Keigwin, P. U. Clark, & R. S. Webb (Eds.), Mechanisms of Global Climate Change at Millennial Time Scales, 1999 (pp. 149-164). (Geophysical Monograph Series; Vol. 112). Blackwell Publishing Ltd. https://doi.org/10.1029/GM112p0149
Bender, Michael L. ; Malaize, Bruno ; Orchardo, Joseph ; Sowers, Todd Anthony ; Jouzet, Jean. / High precision correlations of Greenland and Antarctic ice core records over the last 100 kyr. Mechanisms of Global Climate Change at Millennial Time Scales, 1999. editor / Lloyd D. Keigwin ; Peter U. Clark ; Robert S. Webb. Blackwell Publishing Ltd, 1999. pp. 149-164 (Geophysical Monograph Series).
@inbook{a398a81e02944e1aa1637d95bc841ab4,
title = "High precision correlations of Greenland and Antarctic ice core records over the last 100 kyr",
abstract = "We have remeasured the δ18O of O2 and δ15N of N2 in trapped gases in the GISP2 and Vostok ice cores, and recalculated variations with depth in the δ18O of paleoatmospheric O2. The new records have improved precision and resolution, allowing us to correlate the two ice cores using δ18O of O2 as a time-stratigraphic marker with about half the previous uncertainty in relative ages. We transfer the relative timescales from the gas records to the ice by correcting for differences in the age of the ice and the trapped gas. We then compare records of isotopic temperature vs. time for the GISP2 and Vostok cores. Our comparison confirms that all 6 long (> 2 kyr) interstadial events found in GISP2 between 35-75 ka also occur at Vostok, and strongly suggests that the 9 short GISP2 interstadials occurring within this time period have counterparts at Vostok as well. On average, long and short interstadial events at Vostok and GISP2 are in phase. Various uncertainties, however, allow for corresponding events to be out of phase by as much as 1.4 kyr on average. The near synchroneity in climate change between GISP and Vostok during interstadial events contrasts with the climate phasing during Termination 1, when long, slow warmings as well as millennial events were largely out of phase.",
author = "Bender, {Michael L.} and Bruno Malaize and Joseph Orchardo and Sowers, {Todd Anthony} and Jean Jouzet",
year = "1999",
month = "1",
day = "1",
doi = "10.1029/GM112p0149",
language = "English (US)",
isbn = "9780875900957",
series = "Geophysical Monograph Series",
publisher = "Blackwell Publishing Ltd",
pages = "149--164",
editor = "Keigwin, {Lloyd D.} and Clark, {Peter U.} and Webb, {Robert S.}",
booktitle = "Mechanisms of Global Climate Change at Millennial Time Scales, 1999",

}

Bender, ML, Malaize, B, Orchardo, J, Sowers, TA & Jouzet, J 1999, High precision correlations of Greenland and Antarctic ice core records over the last 100 kyr. in LD Keigwin, PU Clark & RS Webb (eds), Mechanisms of Global Climate Change at Millennial Time Scales, 1999. Geophysical Monograph Series, vol. 112, Blackwell Publishing Ltd, pp. 149-164. https://doi.org/10.1029/GM112p0149

High precision correlations of Greenland and Antarctic ice core records over the last 100 kyr. / Bender, Michael L.; Malaize, Bruno; Orchardo, Joseph; Sowers, Todd Anthony; Jouzet, Jean.

Mechanisms of Global Climate Change at Millennial Time Scales, 1999. ed. / Lloyd D. Keigwin; Peter U. Clark; Robert S. Webb. Blackwell Publishing Ltd, 1999. p. 149-164 (Geophysical Monograph Series; Vol. 112).

Research output: Chapter in Book/Report/Conference proceedingChapter

TY - CHAP

T1 - High precision correlations of Greenland and Antarctic ice core records over the last 100 kyr

AU - Bender, Michael L.

AU - Malaize, Bruno

AU - Orchardo, Joseph

AU - Sowers, Todd Anthony

AU - Jouzet, Jean

PY - 1999/1/1

Y1 - 1999/1/1

N2 - We have remeasured the δ18O of O2 and δ15N of N2 in trapped gases in the GISP2 and Vostok ice cores, and recalculated variations with depth in the δ18O of paleoatmospheric O2. The new records have improved precision and resolution, allowing us to correlate the two ice cores using δ18O of O2 as a time-stratigraphic marker with about half the previous uncertainty in relative ages. We transfer the relative timescales from the gas records to the ice by correcting for differences in the age of the ice and the trapped gas. We then compare records of isotopic temperature vs. time for the GISP2 and Vostok cores. Our comparison confirms that all 6 long (> 2 kyr) interstadial events found in GISP2 between 35-75 ka also occur at Vostok, and strongly suggests that the 9 short GISP2 interstadials occurring within this time period have counterparts at Vostok as well. On average, long and short interstadial events at Vostok and GISP2 are in phase. Various uncertainties, however, allow for corresponding events to be out of phase by as much as 1.4 kyr on average. The near synchroneity in climate change between GISP and Vostok during interstadial events contrasts with the climate phasing during Termination 1, when long, slow warmings as well as millennial events were largely out of phase.

AB - We have remeasured the δ18O of O2 and δ15N of N2 in trapped gases in the GISP2 and Vostok ice cores, and recalculated variations with depth in the δ18O of paleoatmospheric O2. The new records have improved precision and resolution, allowing us to correlate the two ice cores using δ18O of O2 as a time-stratigraphic marker with about half the previous uncertainty in relative ages. We transfer the relative timescales from the gas records to the ice by correcting for differences in the age of the ice and the trapped gas. We then compare records of isotopic temperature vs. time for the GISP2 and Vostok cores. Our comparison confirms that all 6 long (> 2 kyr) interstadial events found in GISP2 between 35-75 ka also occur at Vostok, and strongly suggests that the 9 short GISP2 interstadials occurring within this time period have counterparts at Vostok as well. On average, long and short interstadial events at Vostok and GISP2 are in phase. Various uncertainties, however, allow for corresponding events to be out of phase by as much as 1.4 kyr on average. The near synchroneity in climate change between GISP and Vostok during interstadial events contrasts with the climate phasing during Termination 1, when long, slow warmings as well as millennial events were largely out of phase.

UR - http://www.scopus.com/inward/record.url?scp=34547945504&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547945504&partnerID=8YFLogxK

U2 - 10.1029/GM112p0149

DO - 10.1029/GM112p0149

M3 - Chapter

AN - SCOPUS:34547945504

SN - 9780875900957

T3 - Geophysical Monograph Series

SP - 149

EP - 164

BT - Mechanisms of Global Climate Change at Millennial Time Scales, 1999

A2 - Keigwin, Lloyd D.

A2 - Clark, Peter U.

A2 - Webb, Robert S.

PB - Blackwell Publishing Ltd

ER -

Bender ML, Malaize B, Orchardo J, Sowers TA, Jouzet J. High precision correlations of Greenland and Antarctic ice core records over the last 100 kyr. In Keigwin LD, Clark PU, Webb RS, editors, Mechanisms of Global Climate Change at Millennial Time Scales, 1999. Blackwell Publishing Ltd. 1999. p. 149-164. (Geophysical Monograph Series). https://doi.org/10.1029/GM112p0149