Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition
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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.786701 2024-09-15T18:12:30+00:00 Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition Etourneau, Johan Schneider, Ralph R Blanz, Thomas Martinez, Philippe MEDIAN LATITUDE: -14.422317 * MEDIAN LONGITUDE: 28.726723 * SOUTH-BOUND LATITUDE: -42.913600 * WEST-BOUND LONGITUDE: -82.080830 * NORTH-BOUND LATITUDE: 0.319000 * EAST-BOUND LONGITUDE: 159.361000 * DATE/TIME START: 1990-02-17T20:45:00 * DATE/TIME END: 2002-05-13T09:10:00 2010 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.786701 https://doi.org/10.1594/PANGAEA.786701 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.786701 https://doi.org/10.1594/PANGAEA.786701 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess 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, https://doi.org/10.1016/j.epsl.2010.06.010 Ocean Drilling Program ODP dataset publication series 2010 ftpangaea https://doi.org/10.1594/PANGAEA.78670110.1016/j.epsl.2010.06.010 2024-07-24T02:31:21Z 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. Other/Unknown Material Ice Sheet PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-82.080830,159.361000,0.319000,-42.913600) |
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Open Polar |
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PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
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 |
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 |
Other/Unknown Material |
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 |
title_short |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition |
title_full |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition |
title_fullStr |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition |
title_full_unstemmed |
Sea surface temperature reconstruction for the Pliocene-Pleistocene climate transition |
title_sort |
sea surface temperature reconstruction for the pliocene-pleistocene climate transition |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.786701 https://doi.org/10.1594/PANGAEA.786701 |
op_coverage |
MEDIAN LATITUDE: -14.422317 * MEDIAN LONGITUDE: 28.726723 * SOUTH-BOUND LATITUDE: -42.913600 * WEST-BOUND LONGITUDE: -82.080830 * NORTH-BOUND LATITUDE: 0.319000 * EAST-BOUND LONGITUDE: 159.361000 * DATE/TIME START: 1990-02-17T20:45:00 * DATE/TIME END: 2002-05-13T09:10:00 |
long_lat |
ENVELOPE(-82.080830,159.361000,0.319000,-42.913600) |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
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, https://doi.org/10.1016/j.epsl.2010.06.010 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.786701 https://doi.org/10.1594/PANGAEA.786701 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.78670110.1016/j.epsl.2010.06.010 |
_version_ |
1810450079100698624 |