Global reorganization of deep-sea circulation and carbon storage after the last ice age-Reference-Cited by-同舟云学术

Global reorganization of deep-sea circulation and carbon storage after the last ice age

Published:2022-11-18 Issue:46 Volume:8 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Rafter Patrick A.¹^ORCID,Gray William R.²^ORCID,Hines Sophia K.V.³^ORCID,Burke Andrea⁴^ORCID,Costa Kassandra M.³^ORCID,Gottschalk Julia⁵^ORCID,Hain Mathis P.⁶^ORCID,Rae James W.B.⁴^ORCID,Southon John R.¹,Walczak Maureen H.⁷^ORCID,Yu Jimin⁸⁹^ORCID,Adkins Jess F.¹⁰^ORCID,DeVries Timothy¹¹^ORCID

Affiliation:

1. University of California, Irvine, Irvine, CA, USA.

2. Laboratoire des Science du Climat et de l’Environnement (LSCE/IPSL), Université-Paris-Saclay, Gif-sur-Yvette, France.

3. Woods Hole Oceanographic Institution, Woods Hole, MA, USA.

4. University of St. Andrews, St. Andrews, Scotland, UK.

5. Institute of Geosciences, Kiel University, Kiel, Germany.

6. University of California, Santa Cruz, Santa Cruz, CA, USA.

7. Oregon State University, Corvallis, OR, USA.

8. Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China.

9. Australia National University, Canberra, Australia.

10. California Institute of Technology, Pasadena, CA, USA.

11. Department of Geography and Earth Research Institute, University of California, Santa Barbara, CA, USA.

Abstract

Using new and published marine fossil radiocarbon ( 14 C/C) measurements, a tracer uniquely sensitive to circulation and air-sea gas exchange, we establish several benchmarks for Atlantic, Southern, and Pacific deep-sea circulation and ventilation since the last ice age. We find the most 14 C-depleted water in glacial Pacific bottom depths, rather than the mid-depths as they are today, which is best explained by a slowdown in glacial deep-sea overturning in addition to a “flipped” glacial Pacific overturning configuration. These observations cannot be produced by changes in air-sea gas exchange alone, and they underscore the major role for changes in the overturning circulation for glacial deep-sea carbon storage in the vast Pacific abyss and the concomitant drawdown of atmospheric CO 2 .

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference89 articles.

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