Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation

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Standard

Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation. / Pedro, Joel Benjamin; Rasmussen, Sune Olander; van Ommen, Tas D.

I: Climate of the Past, Bind 8, 23.07.2012, s. 1213-1221.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Pedro, JB, Rasmussen, SO & van Ommen, TD 2012, 'Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation', Climate of the Past, bind 8, s. 1213-1221. https://doi.org/10.5194/cp-8-1213-2012

APA

Pedro, J. B., Rasmussen, S. O., & van Ommen, T. D. (2012). Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation. Climate of the Past, 8, 1213-1221. https://doi.org/10.5194/cp-8-1213-2012

Vancouver

Pedro JB, Rasmussen SO, van Ommen TD. Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation. Climate of the Past. 2012 jul. 23;8:1213-1221. https://doi.org/10.5194/cp-8-1213-2012

Author

Pedro, Joel Benjamin ; Rasmussen, Sune Olander ; van Ommen, Tas D. / Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation. I: Climate of the Past. 2012 ; Bind 8. s. 1213-1221.

Bibtex

@article{96176ada3f614f49950dd1d1d06f92c9,
title = "Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation",
abstract = "Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by 80 parts per million by volume and Antarctic temperature increased by 10°C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags.",
author = "Pedro, {Joel Benjamin} and Rasmussen, {Sune Olander} and {van Ommen}, {Tas D.}",
year = "2012",
month = jul,
day = "23",
doi = "10.5194/cp-8-1213-2012",
language = "English",
volume = "8",
pages = "1213--1221",
journal = "Climate of the Past",
issn = "1814-9324",
publisher = "Copernicus GmbH",

}

RIS

TY - JOUR

T1 - Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation

AU - Pedro, Joel Benjamin

AU - Rasmussen, Sune Olander

AU - van Ommen, Tas D.

PY - 2012/7/23

Y1 - 2012/7/23

N2 - Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by 80 parts per million by volume and Antarctic temperature increased by 10°C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags.

AB - Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by 80 parts per million by volume and Antarctic temperature increased by 10°C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags.

U2 - 10.5194/cp-8-1213-2012

DO - 10.5194/cp-8-1213-2012

M3 - Journal article

VL - 8

SP - 1213

EP - 1221

JO - Climate of the Past

JF - Climate of the Past

SN - 1814-9324

ER -

ID: 40810519