Cenozoic evolution of deep ocean temperature from clumped isotope thermometry

A N Meckler; P F Sexton; A M Piasecki; T J Leutert; J Marquardt; M Ziegler; T Agterhuis; L J Lourens; J W B Rae; J Barnet; A Tripati; S M Bernasconi

doi:10.1126/science.abk0604

Cenozoic evolution of deep ocean temperature from clumped isotope thermometry

A N Meckler^*, P F Sexton, A M Piasecki, T J Leutert, J Marquardt, M Ziegler, T Agterhuis, L J Lourens, J W B Rae, J Barnet, A Tripati, S M Bernasconi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Characterizing past climate states is crucial for understanding the future consequences of ongoing greenhouse gas emissions. Here, we revisit the benchmark time series for deep ocean temperature across the past 65 million years using clumped isotope thermometry. Our temperature estimates from the deep Atlantic Ocean are overall much warmer compared with oxygen isotope-based reconstructions, highlighting the likely influence of changes in deep ocean pH and/or seawater oxygen isotope composition on classical oxygen isotope records of the Cenozoic. In addition, our data reveal previously unrecognized large swings in deep ocean temperature during early Eocene acute greenhouse warmth. Our results call for a reassessment of the Cenozoic history of ocean temperatures to achieve a more accurate understanding of the nature of climatic responses to tectonic events and variable greenhouse forcing.

Original language	English
Pages (from-to)	86-90
Number of pages	5
Journal	Science
Volume	377
Issue number	6601
Early online date	30 Jun 2022
DOIs	https://doi.org/10.1126/science.abk0604
Publication status	Published - 1 Jul 2022

Keywords

Climactic Optimum (EECO)
Southern-ocean
Sea-level
Circulation changes
Eocene
Paleocene
Seawater
Oxygen
Carbon
Foraminifera

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1126/science.abk0604

Meckler_Science_Cenozoic-evolution_AAM
Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1126/science.abk0604.
Accepted author manuscript, 2.12 MB

https://oro.open.ac.uk/84039/Licence: CC BY-NC-ND

OldCO2NewArchives: CO2 reconstruction: OldCO2NewArchives: CO2 Reconstruction over the last 100 Myr from novel geological archives
Rae, J. W. B. (PI)
European Research Council
1/02/19 → 31/01/24
Project: Fellowship

Cenozoic clumped isotope temperature record from the deep North Atlantic
Meckler, A. N. (Contributor), Sexton, P. F. (Contributor), Piasecki, A. (Contributor), Leutert, T. J. (Contributor), Marquardt, J. (Contributor), Ziegler, M. (Contributor), Agterhuis, T. (Contributor), Lourens, L. J. (Contributor), Rae, J. W. B. (Contributor), Barnet, J. (Contributor), Tripati, A. (Contributor) & Bernasconi, S. M. (Contributor), PANGAEA, 2022
DOI: 10.1594/PANGAEA.945578
Dataset

Cite this

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title = "Cenozoic evolution of deep ocean temperature from clumped isotope thermometry",

abstract = "Characterizing past climate states is crucial for understanding the future consequences of ongoing greenhouse gas emissions. Here, we revisit the benchmark time series for deep ocean temperature across the past 65 million years using clumped isotope thermometry. Our temperature estimates from the deep Atlantic Ocean are overall much warmer compared with oxygen isotope-based reconstructions, highlighting the likely influence of changes in deep ocean pH and/or seawater oxygen isotope composition on classical oxygen isotope records of the Cenozoic. In addition, our data reveal previously unrecognized large swings in deep ocean temperature during early Eocene acute greenhouse warmth. Our results call for a reassessment of the Cenozoic history of ocean temperatures to achieve a more accurate understanding of the nature of climatic responses to tectonic events and variable greenhouse forcing.",

keywords = "Climactic Optimum (EECO), Southern-ocean, Sea-level, Circulation changes, Eocene, Paleocene, Seawater, Oxygen, Carbon, Foraminifera",

author = "Meckler, {A N} and Sexton, {P F} and Piasecki, {A M} and Leutert, {T J} and J Marquardt and M Ziegler and T Agterhuis and Lourens, {L J} and Rae, {J W B} and J Barnet and A Tripati and Bernasconi, {S M}",

note = "Funding: This work was supported by the Swiss National Science Foundation (MHV fellowship to A.N.M.); the European Research Council (starting grant 638467 to A.N.M. and starting grant 805246 to J.W.B.R.); the Trond Mohn Foundation (starting grant BFS2015REK01 to A.N.M.); the Norwegian Research Council (infrastructure grant 245907 to A.N.M.); the Natural Environment Research Council (NERC grant NE/P019331/1 to P.F.S.); the Dutch Research Council (NWO VIDI project 016.161.365 to M.Z.); the Heising Simons Foundation (grant 2022-3314 to A.T.); and the Netherlands Earth System Science Centre (NESSC) (L.J.L.).",

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doi = "10.1126/science.abk0604",

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T1 - Cenozoic evolution of deep ocean temperature from clumped isotope thermometry

AU - Meckler, A N

AU - Sexton, P F

AU - Piasecki, A M

AU - Leutert, T J

AU - Marquardt, J

AU - Ziegler, M

AU - Agterhuis, T

AU - Lourens, L J

AU - Rae, J W B

AU - Barnet, J

AU - Tripati, A

AU - Bernasconi, S M

N1 - Funding: This work was supported by the Swiss National Science Foundation (MHV fellowship to A.N.M.); the European Research Council (starting grant 638467 to A.N.M. and starting grant 805246 to J.W.B.R.); the Trond Mohn Foundation (starting grant BFS2015REK01 to A.N.M.); the Norwegian Research Council (infrastructure grant 245907 to A.N.M.); the Natural Environment Research Council (NERC grant NE/P019331/1 to P.F.S.); the Dutch Research Council (NWO VIDI project 016.161.365 to M.Z.); the Heising Simons Foundation (grant 2022-3314 to A.T.); and the Netherlands Earth System Science Centre (NESSC) (L.J.L.).

PY - 2022/7/1

Y1 - 2022/7/1

N2 - Characterizing past climate states is crucial for understanding the future consequences of ongoing greenhouse gas emissions. Here, we revisit the benchmark time series for deep ocean temperature across the past 65 million years using clumped isotope thermometry. Our temperature estimates from the deep Atlantic Ocean are overall much warmer compared with oxygen isotope-based reconstructions, highlighting the likely influence of changes in deep ocean pH and/or seawater oxygen isotope composition on classical oxygen isotope records of the Cenozoic. In addition, our data reveal previously unrecognized large swings in deep ocean temperature during early Eocene acute greenhouse warmth. Our results call for a reassessment of the Cenozoic history of ocean temperatures to achieve a more accurate understanding of the nature of climatic responses to tectonic events and variable greenhouse forcing.

AB - Characterizing past climate states is crucial for understanding the future consequences of ongoing greenhouse gas emissions. Here, we revisit the benchmark time series for deep ocean temperature across the past 65 million years using clumped isotope thermometry. Our temperature estimates from the deep Atlantic Ocean are overall much warmer compared with oxygen isotope-based reconstructions, highlighting the likely influence of changes in deep ocean pH and/or seawater oxygen isotope composition on classical oxygen isotope records of the Cenozoic. In addition, our data reveal previously unrecognized large swings in deep ocean temperature during early Eocene acute greenhouse warmth. Our results call for a reassessment of the Cenozoic history of ocean temperatures to achieve a more accurate understanding of the nature of climatic responses to tectonic events and variable greenhouse forcing.

KW - Climactic Optimum (EECO)

KW - Southern-ocean

KW - Sea-level

KW - Circulation changes

KW - Eocene

KW - Paleocene

KW - Seawater

KW - Oxygen

KW - Carbon

KW - Foraminifera

U2 - 10.1126/science.abk0604

DO - 10.1126/science.abk0604

M3 - Article

C2 - 35771913

SN - 0036-8075

VL - 377

SP - 86

EP - 90

JO - Science

JF - Science

IS - 6601

ER -

Cenozoic evolution of deep ocean temperature from clumped isotope thermometry

Abstract

Keywords

UN SDGs

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Projects

OldCO2NewArchives: CO2 reconstruction: OldCO2NewArchives: CO2 Reconstruction over the last 100 Myr from novel geological archives

Datasets

Cenozoic clumped isotope temperature record from the deep North Atlantic

Cite this