Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific
The integrated effects of ocean-climate dynamics on export production in the North Pacific have remained elusive. We present a 91 k.y. export productivity (EP) record based on sedimentary reactive phosphorus from the western subtropical North Pacific. On a millennial time scale, EP decreased during...
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Geological Society of America
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ftunivbern:oai:boris.unibe.ch:101266 2023-08-20T04:02:30+02:00 Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific Li, Dawei Zheng, Li-Wei Jaccard, Samuel Fang, Tien-Hsi Paytan, Adina Zheng, Xufeng Chang, Yuan-Pin Kao, Shuh-Ji 2017-05-01 application/pdf https://boris.unibe.ch/101266/1/Li%20et%20al.,%2017.pdf https://boris.unibe.ch/101266/ eng eng Geological Society of America https://boris.unibe.ch/101266/ info:eu-repo/semantics/restrictedAccess Li, Dawei; Zheng, Li-Wei; Jaccard, Samuel; Fang, Tien-Hsi; Paytan, Adina; Zheng, Xufeng; Chang, Yuan-Pin; Kao, Shuh-Ji (2017). Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific. Geology, 45(7), pp. 651-654. Geological Society of America 10.1130/G38981.1 <http://dx.doi.org/10.1130/G38981.1> 550 Earth sciences & geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2017 ftunivbern https://doi.org/10.1130/G38981.1 2023-07-31T21:36:23Z The integrated effects of ocean-climate dynamics on export production in the North Pacific have remained elusive. We present a 91 k.y. export productivity (EP) record based on sedimentary reactive phosphorus from the western subtropical North Pacific. On a millennial time scale, EP decreased during Northern Hemisphere cold events when atmospheric dust loading was high, and increased during warm episodes. The inferred antiphase relation between dust and EP suggests that the supply of macronutrients to the sunlit surface ocean, modulated by the penetration depth of North Pacific Intermediate Water and not eolian Fe, exerted a major control on EP in the subtropical North Pacific. A compilation of global EP records suggests that eolian Fe most likely played a role in stimulating EP regionally only in the Subantarctic zone of the Southern Ocean. Over the past 91 k.y., during the cold-south–warm-north phase of the bipolar seesaw, the biological pump in both hemispheres was enhanced synchronously, yet by different drivers; atmospheric Fe input for the Subantarctic and subsurface macronutrient supply for the North Pacific, including the tropical and/ or subtropical Pacific, and the Antarctic zone of the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean BORIS (Bern Open Repository and Information System, University of Bern) Antarctic Pacific Southern Ocean The Antarctic Geology 45 7 651 654 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
550 Earth sciences & geology |
spellingShingle |
550 Earth sciences & geology Li, Dawei Zheng, Li-Wei Jaccard, Samuel Fang, Tien-Hsi Paytan, Adina Zheng, Xufeng Chang, Yuan-Pin Kao, Shuh-Ji Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific |
topic_facet |
550 Earth sciences & geology |
description |
The integrated effects of ocean-climate dynamics on export production in the North Pacific have remained elusive. We present a 91 k.y. export productivity (EP) record based on sedimentary reactive phosphorus from the western subtropical North Pacific. On a millennial time scale, EP decreased during Northern Hemisphere cold events when atmospheric dust loading was high, and increased during warm episodes. The inferred antiphase relation between dust and EP suggests that the supply of macronutrients to the sunlit surface ocean, modulated by the penetration depth of North Pacific Intermediate Water and not eolian Fe, exerted a major control on EP in the subtropical North Pacific. A compilation of global EP records suggests that eolian Fe most likely played a role in stimulating EP regionally only in the Subantarctic zone of the Southern Ocean. Over the past 91 k.y., during the cold-south–warm-north phase of the bipolar seesaw, the biological pump in both hemispheres was enhanced synchronously, yet by different drivers; atmospheric Fe input for the Subantarctic and subsurface macronutrient supply for the North Pacific, including the tropical and/ or subtropical Pacific, and the Antarctic zone of the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Li, Dawei Zheng, Li-Wei Jaccard, Samuel Fang, Tien-Hsi Paytan, Adina Zheng, Xufeng Chang, Yuan-Pin Kao, Shuh-Ji |
author_facet |
Li, Dawei Zheng, Li-Wei Jaccard, Samuel Fang, Tien-Hsi Paytan, Adina Zheng, Xufeng Chang, Yuan-Pin Kao, Shuh-Ji |
author_sort |
Li, Dawei |
title |
Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific |
title_short |
Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific |
title_full |
Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific |
title_fullStr |
Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific |
title_full_unstemmed |
Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific |
title_sort |
millennial-scale ocean dynamics controlled export productivity in the subtropical north pacific |
publisher |
Geological Society of America |
publishDate |
2017 |
url |
https://boris.unibe.ch/101266/1/Li%20et%20al.,%2017.pdf https://boris.unibe.ch/101266/ |
geographic |
Antarctic Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Li, Dawei; Zheng, Li-Wei; Jaccard, Samuel; Fang, Tien-Hsi; Paytan, Adina; Zheng, Xufeng; Chang, Yuan-Pin; Kao, Shuh-Ji (2017). Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific. Geology, 45(7), pp. 651-654. Geological Society of America 10.1130/G38981.1 <http://dx.doi.org/10.1130/G38981.1> |
op_relation |
https://boris.unibe.ch/101266/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1130/G38981.1 |
container_title |
Geology |
container_volume |
45 |
container_issue |
7 |
container_start_page |
651 |
op_container_end_page |
654 |
_version_ |
1774712987618115584 |