Changes in deep Pacific circulation and carbon storage during the Pliocene-Pleistocene transition
International audience The global climate has been gradually cooling over the Cenozoic and is punctuated by the intensification of Northern Hemisphere Glaciation (NHG) from the latest Pliocene to earliest Pleistocene (∼3.1–2.5 millions of years ago, Ma). A decline of atmospheric CO2 is supposed as a...
Published in: | Earth and Planetary Science Letters |
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Online Access: | https://hal.science/hal-04489460 https://doi.org/10.1016/j.epsl.2023.118020 |
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ftuniparissaclay:oai:HAL:hal-04489460v1 2024-09-15T17:46:19+00:00 Changes in deep Pacific circulation and carbon storage during the Pliocene-Pleistocene transition Jian, Zhimin Dang, Haowen Yu, Jimin Wu, Qiong Gong, Xun Stepanek, Christian Colin, Christophe Hu, Lili Lohmann, Gerrit Zhou, Xiaoli Wan, Sui State Key Laboratory of Marine Geology Shanghai Tongji University Laoshan Laboratory Australian National University (ANU) Hohai University China University of Geosciences Wuhan (CUG) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association Géosciences Paris Saclay (GEOPS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) South China Sea Institute of Oceanology the National Natural Science Foundation of China (42188102, 42222603, 42176053 and 41830539), and German BMBF grants PalMod (01LP1504A) and NOPAWAC (03F0785A). 2023-03 https://hal.science/hal-04489460 https://doi.org/10.1016/j.epsl.2023.118020 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2023.118020 hal-04489460 https://hal.science/hal-04489460 doi:10.1016/j.epsl.2023.118020 ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-04489460 Earth and Planetary Science Letters, 2023, 605, pp.118020. ⟨10.1016/j.epsl.2023.118020⟩ intensification of Northern Hemisphere Glaciation deep Pacific circulation deep Pacifi,c carbon storage foraminiferal εNd benthic foraminiferal B/Ca [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2023 ftuniparissaclay https://doi.org/10.1016/j.epsl.2023.118020 2024-08-30T01:48:46Z International audience The global climate has been gradually cooling over the Cenozoic and is punctuated by the intensification of Northern Hemisphere Glaciation (NHG) from the latest Pliocene to earliest Pleistocene (∼3.1–2.5 millions of years ago, Ma). A decline of atmospheric CO2 is supposed as a prerequisite for the NHG, but the associated carbon-cycle processes remain elusive. Here we combine foraminiferal records of neodymium isotope and boron-calcium ratio, and simulations of an Earth system model, to investigate changes in the water-mass composition and carbonate-ion concentration of the deep Pacific Ocean during the NHG. Our proxy records have revealed a significant expansion of southern-sourced waters with increased respired carbon storage into the deep Pacific during the NHG. These changes may be explained by strengthened deep-water formation and biological-pump efficiency in the Southern Ocean due to Antarctic sea-ice growth, as suggested by our model experiments and evidence from the Sub-Antarctic region. These results provide key clues for quantifying the role of the dissolved inorganic carbon content of deep Pacific waters in modulating atmospheric CO2 during the NHG. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Archives ouvertes de Paris-Saclay Earth and Planetary Science Letters 605 118020 |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
intensification of Northern Hemisphere Glaciation deep Pacific circulation deep Pacifi,c carbon storage foraminiferal εNd benthic foraminiferal B/Ca [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
intensification of Northern Hemisphere Glaciation deep Pacific circulation deep Pacifi,c carbon storage foraminiferal εNd benthic foraminiferal B/Ca [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Jian, Zhimin Dang, Haowen Yu, Jimin Wu, Qiong Gong, Xun Stepanek, Christian Colin, Christophe Hu, Lili Lohmann, Gerrit Zhou, Xiaoli Wan, Sui Changes in deep Pacific circulation and carbon storage during the Pliocene-Pleistocene transition |
topic_facet |
intensification of Northern Hemisphere Glaciation deep Pacific circulation deep Pacifi,c carbon storage foraminiferal εNd benthic foraminiferal B/Ca [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The global climate has been gradually cooling over the Cenozoic and is punctuated by the intensification of Northern Hemisphere Glaciation (NHG) from the latest Pliocene to earliest Pleistocene (∼3.1–2.5 millions of years ago, Ma). A decline of atmospheric CO2 is supposed as a prerequisite for the NHG, but the associated carbon-cycle processes remain elusive. Here we combine foraminiferal records of neodymium isotope and boron-calcium ratio, and simulations of an Earth system model, to investigate changes in the water-mass composition and carbonate-ion concentration of the deep Pacific Ocean during the NHG. Our proxy records have revealed a significant expansion of southern-sourced waters with increased respired carbon storage into the deep Pacific during the NHG. These changes may be explained by strengthened deep-water formation and biological-pump efficiency in the Southern Ocean due to Antarctic sea-ice growth, as suggested by our model experiments and evidence from the Sub-Antarctic region. These results provide key clues for quantifying the role of the dissolved inorganic carbon content of deep Pacific waters in modulating atmospheric CO2 during the NHG. |
author2 |
State Key Laboratory of Marine Geology Shanghai Tongji University Laoshan Laboratory Australian National University (ANU) Hohai University China University of Geosciences Wuhan (CUG) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association Géosciences Paris Saclay (GEOPS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) South China Sea Institute of Oceanology the National Natural Science Foundation of China (42188102, 42222603, 42176053 and 41830539), and German BMBF grants PalMod (01LP1504A) and NOPAWAC (03F0785A). |
format |
Article in Journal/Newspaper |
author |
Jian, Zhimin Dang, Haowen Yu, Jimin Wu, Qiong Gong, Xun Stepanek, Christian Colin, Christophe Hu, Lili Lohmann, Gerrit Zhou, Xiaoli Wan, Sui |
author_facet |
Jian, Zhimin Dang, Haowen Yu, Jimin Wu, Qiong Gong, Xun Stepanek, Christian Colin, Christophe Hu, Lili Lohmann, Gerrit Zhou, Xiaoli Wan, Sui |
author_sort |
Jian, Zhimin |
title |
Changes in deep Pacific circulation and carbon storage during the Pliocene-Pleistocene transition |
title_short |
Changes in deep Pacific circulation and carbon storage during the Pliocene-Pleistocene transition |
title_full |
Changes in deep Pacific circulation and carbon storage during the Pliocene-Pleistocene transition |
title_fullStr |
Changes in deep Pacific circulation and carbon storage during the Pliocene-Pleistocene transition |
title_full_unstemmed |
Changes in deep Pacific circulation and carbon storage during the Pliocene-Pleistocene transition |
title_sort |
changes in deep pacific circulation and carbon storage during the pliocene-pleistocene transition |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04489460 https://doi.org/10.1016/j.epsl.2023.118020 |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-04489460 Earth and Planetary Science Letters, 2023, 605, pp.118020. ⟨10.1016/j.epsl.2023.118020⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2023.118020 hal-04489460 https://hal.science/hal-04489460 doi:10.1016/j.epsl.2023.118020 |
op_doi |
https://doi.org/10.1016/j.epsl.2023.118020 |
container_title |
Earth and Planetary Science Letters |
container_volume |
605 |
container_start_page |
118020 |
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1810494352340811776 |