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...
Main Authors: | , , , , , , , |
---|---|
Format: | Text |
Language: | English |
Published: |
Geological Society of America
2017
|
Subjects: | |
Online Access: | https://dx.doi.org/10.7892/boris.101266 http://boris.unibe.ch/101266/ |
id |
ftdatacite:10.7892/boris.101266 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.7892/boris.101266 2023-05-15T13:34:39+02:00 Millennial-scale ocean dynamics controlled export productivity in the subtropical North Pacific Kao, Shuh-Ji Chang, Yuan-Pin Zheng, Li-Wei Fang, Tien-Hsi Paytan, Adina Li, Dawei Jaccard, Samuel Zheng, Xufeng 2017 application/pdf https://dx.doi.org/10.7892/boris.101266 http://boris.unibe.ch/101266/ en eng Geological Society of America info:eu-repo/semantics/restrictedAccess 550 Earth sciences & geology Text article-journal ScholarlyArticle 2017 ftdatacite https://doi.org/10.7892/boris.101266 2021-11-05T12:55:41Z 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. Text Antarc* Antarctic Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean The Antarctic Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
550 Earth sciences & geology |
spellingShingle |
550 Earth sciences & geology Kao, Shuh-Ji Chang, Yuan-Pin Zheng, Li-Wei Fang, Tien-Hsi Paytan, Adina Li, Dawei Jaccard, Samuel Zheng, Xufeng 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 |
Text |
author |
Kao, Shuh-Ji Chang, Yuan-Pin Zheng, Li-Wei Fang, Tien-Hsi Paytan, Adina Li, Dawei Jaccard, Samuel Zheng, Xufeng |
author_facet |
Kao, Shuh-Ji Chang, Yuan-Pin Zheng, Li-Wei Fang, Tien-Hsi Paytan, Adina Li, Dawei Jaccard, Samuel Zheng, Xufeng |
author_sort |
Kao, Shuh-Ji |
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://dx.doi.org/10.7892/boris.101266 http://boris.unibe.ch/101266/ |
geographic |
Antarctic Southern Ocean The Antarctic Pacific |
geographic_facet |
Antarctic Southern Ocean The Antarctic Pacific |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.7892/boris.101266 |
_version_ |
1766055045561843712 |