Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition, supplement to: Etourneau, Johan; Schneider, Ralph R; Blanz, Thomas; Martinez, Philippe (2010): Intensification of the Walker and Hadley atmospheric circulations during the Pliocene-Pleistocene climate transition. Earth and Planetary Science Letters, 297(1-2), 103-110
When comparing new sea surface temperature (SST) records between the western and eastern equatorial Pacific spanning the last 3.2 Ma, we found that the zonal temperature gradient over the entire tropical Pacific irreversibly increased by 3 to 4 °C from 2.2 to 2.0 Ma. Here, we suggest a pronounced in...
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ftdatacite:10.1594/pangaea.786701 2023-05-15T16:41:11+02:00 Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition, supplement to: Etourneau, Johan; Schneider, Ralph R; Blanz, Thomas; Martinez, Philippe (2010): Intensification of the Walker and Hadley atmospheric circulations during the Pliocene-Pleistocene climate transition. Earth and Planetary Science Letters, 297(1-2), 103-110 Etourneau, Johan Schneider, Ralph R Blanz, Thomas Martinez, Philippe 2010 application/zip https://dx.doi.org/10.1594/pangaea.786701 https://doi.pangaea.de/10.1594/PANGAEA.786701 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.epsl.2010.06.010 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Ocean Drilling Program ODP Supplementary Collection of Datasets Collection article 2010 ftdatacite https://doi.org/10.1594/pangaea.786701 https://doi.org/10.1016/j.epsl.2010.06.010 2022-02-08T16:24:46Z When comparing new sea surface temperature (SST) records between the western and eastern equatorial Pacific spanning the last 3.2 Ma, we found that the zonal temperature gradient over the entire tropical Pacific irreversibly increased by 3 to 4 °C from 2.2 to 2.0 Ma. Here, we suggest a pronounced increase in atmospheric circulation from a weak to a strong zonal Walker circulation (WC) during the early Pleistocene. Evidence from other oceanic areas also suggests a strengthening in the meridional Hadley circulation (HC) during the same time period. Therefore, we also suggest that the invigoration of both atmospheric circulation patterns was intimately coupled during the Plio-Pleistocene transition, and likely linked to a shrinkage in the zonal extension of the tropical to subtropical warm-sphere associated with a prominent increase in the pole to equator temperature gradient. Our conclusion refutes assumptions that the intensification of atmospheric circulation in the tropics and subtropics significantly contributed to the initiation of continental ice sheet formation at high latitudes, since the onset of extensive Northern Hemisphere Glaciation (NHG) occurred ~2.75 Ma ago, in the late Pliocene. Instead, the development of a stronger atmospheric circulation ~2.2-2.0 Ma ago could have significantly contributed to the Plio-Pleistocene climate cooling. Article in Journal/Newspaper Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) Pacific |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Ocean Drilling Program ODP |
spellingShingle |
Ocean Drilling Program ODP Etourneau, Johan Schneider, Ralph R Blanz, Thomas Martinez, Philippe Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition, supplement to: Etourneau, Johan; Schneider, Ralph R; Blanz, Thomas; Martinez, Philippe (2010): Intensification of the Walker and Hadley atmospheric circulations during the Pliocene-Pleistocene climate transition. Earth and Planetary Science Letters, 297(1-2), 103-110 |
topic_facet |
Ocean Drilling Program ODP |
description |
When comparing new sea surface temperature (SST) records between the western and eastern equatorial Pacific spanning the last 3.2 Ma, we found that the zonal temperature gradient over the entire tropical Pacific irreversibly increased by 3 to 4 °C from 2.2 to 2.0 Ma. Here, we suggest a pronounced increase in atmospheric circulation from a weak to a strong zonal Walker circulation (WC) during the early Pleistocene. Evidence from other oceanic areas also suggests a strengthening in the meridional Hadley circulation (HC) during the same time period. Therefore, we also suggest that the invigoration of both atmospheric circulation patterns was intimately coupled during the Plio-Pleistocene transition, and likely linked to a shrinkage in the zonal extension of the tropical to subtropical warm-sphere associated with a prominent increase in the pole to equator temperature gradient. Our conclusion refutes assumptions that the intensification of atmospheric circulation in the tropics and subtropics significantly contributed to the initiation of continental ice sheet formation at high latitudes, since the onset of extensive Northern Hemisphere Glaciation (NHG) occurred ~2.75 Ma ago, in the late Pliocene. Instead, the development of a stronger atmospheric circulation ~2.2-2.0 Ma ago could have significantly contributed to the Plio-Pleistocene climate cooling. |
format |
Article in Journal/Newspaper |
author |
Etourneau, Johan Schneider, Ralph R Blanz, Thomas Martinez, Philippe |
author_facet |
Etourneau, Johan Schneider, Ralph R Blanz, Thomas Martinez, Philippe |
author_sort |
Etourneau, Johan |
title |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition, supplement to: Etourneau, Johan; Schneider, Ralph R; Blanz, Thomas; Martinez, Philippe (2010): Intensification of the Walker and Hadley atmospheric circulations during the Pliocene-Pleistocene climate transition. Earth and Planetary Science Letters, 297(1-2), 103-110 |
title_short |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition, supplement to: Etourneau, Johan; Schneider, Ralph R; Blanz, Thomas; Martinez, Philippe (2010): Intensification of the Walker and Hadley atmospheric circulations during the Pliocene-Pleistocene climate transition. Earth and Planetary Science Letters, 297(1-2), 103-110 |
title_full |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition, supplement to: Etourneau, Johan; Schneider, Ralph R; Blanz, Thomas; Martinez, Philippe (2010): Intensification of the Walker and Hadley atmospheric circulations during the Pliocene-Pleistocene climate transition. Earth and Planetary Science Letters, 297(1-2), 103-110 |
title_fullStr |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition, supplement to: Etourneau, Johan; Schneider, Ralph R; Blanz, Thomas; Martinez, Philippe (2010): Intensification of the Walker and Hadley atmospheric circulations during the Pliocene-Pleistocene climate transition. Earth and Planetary Science Letters, 297(1-2), 103-110 |
title_full_unstemmed |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition, supplement to: Etourneau, Johan; Schneider, Ralph R; Blanz, Thomas; Martinez, Philippe (2010): Intensification of the Walker and Hadley atmospheric circulations during the Pliocene-Pleistocene climate transition. Earth and Planetary Science Letters, 297(1-2), 103-110 |
title_sort |
sea surface temperature reconstruction for the pliocene-pleistocene climate transition, supplement to: etourneau, johan; schneider, ralph r; blanz, thomas; martinez, philippe (2010): intensification of the walker and hadley atmospheric circulations during the pliocene-pleistocene climate transition. earth and planetary science letters, 297(1-2), 103-110 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2010 |
url |
https://dx.doi.org/10.1594/pangaea.786701 https://doi.pangaea.de/10.1594/PANGAEA.786701 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://dx.doi.org/10.1016/j.epsl.2010.06.010 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.786701 https://doi.org/10.1016/j.epsl.2010.06.010 |
_version_ |
1766031626193600512 |