Two modes of change in Southern Ocean productivity over the past million years
Export of organic carbon from surface waters of the Antarctic Zone of the Southern Ocean decreased during the last ice age, coinciding with declining atmospheric carbon dioxide (CO2) concentrations, signaling reduced exchange of CO2 between the ocean interior and the atmosphere. In contrast, in the...
Main Authors: | , , , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
Columbia University
2013
|
Subjects: | |
Online Access: | https://dx.doi.org/10.7916/d81835zv https://academiccommons.columbia.edu/doi/10.7916/D81835ZV |
id |
ftdatacite:10.7916/d81835zv |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.7916/d81835zv 2023-05-15T13:58:53+02:00 Two modes of change in Southern Ocean productivity over the past million years Jaccard, S. L. Hayes, Christopher T. Martinez-Garcia, A. Hodell, D. A. Anderson, Robert F. Sigman, D. M. Haug, G. H. 2013 https://dx.doi.org/10.7916/d81835zv https://academiccommons.columbia.edu/doi/10.7916/D81835ZV unknown Columbia University https://dx.doi.org/10.1126/science.1227545 Paleoclimatology Atmosphere Chemical oceanography Hydrology Text Articles article-journal ScholarlyArticle 2013 ftdatacite https://doi.org/10.7916/d81835zv https://doi.org/10.1126/science.1227545 2021-11-05T12:55:41Z Export of organic carbon from surface waters of the Antarctic Zone of the Southern Ocean decreased during the last ice age, coinciding with declining atmospheric carbon dioxide (CO2) concentrations, signaling reduced exchange of CO2 between the ocean interior and the atmosphere. In contrast, in the Subantarctic Zone, export production increased into ice ages coinciding with rising dust fluxes, thus suggesting iron fertilization of subantarctic phytoplankton. Here, a new high-resolution productivity record from the Antarctic Zone is compiled with parallel subantarctic data over the past million years. Together, they fit the view that the combination of these two modes of Southern Ocean change determines the temporal structure of the glacial-interglacial atmospheric CO2 record, including during the interval of “lukewarm” interglacials between 450 and 800 thousand years ago. Text Antarc* Antarctic Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Paleoclimatology Atmosphere Chemical oceanography Hydrology |
spellingShingle |
Paleoclimatology Atmosphere Chemical oceanography Hydrology Jaccard, S. L. Hayes, Christopher T. Martinez-Garcia, A. Hodell, D. A. Anderson, Robert F. Sigman, D. M. Haug, G. H. Two modes of change in Southern Ocean productivity over the past million years |
topic_facet |
Paleoclimatology Atmosphere Chemical oceanography Hydrology |
description |
Export of organic carbon from surface waters of the Antarctic Zone of the Southern Ocean decreased during the last ice age, coinciding with declining atmospheric carbon dioxide (CO2) concentrations, signaling reduced exchange of CO2 between the ocean interior and the atmosphere. In contrast, in the Subantarctic Zone, export production increased into ice ages coinciding with rising dust fluxes, thus suggesting iron fertilization of subantarctic phytoplankton. Here, a new high-resolution productivity record from the Antarctic Zone is compiled with parallel subantarctic data over the past million years. Together, they fit the view that the combination of these two modes of Southern Ocean change determines the temporal structure of the glacial-interglacial atmospheric CO2 record, including during the interval of “lukewarm” interglacials between 450 and 800 thousand years ago. |
format |
Text |
author |
Jaccard, S. L. Hayes, Christopher T. Martinez-Garcia, A. Hodell, D. A. Anderson, Robert F. Sigman, D. M. Haug, G. H. |
author_facet |
Jaccard, S. L. Hayes, Christopher T. Martinez-Garcia, A. Hodell, D. A. Anderson, Robert F. Sigman, D. M. Haug, G. H. |
author_sort |
Jaccard, S. L. |
title |
Two modes of change in Southern Ocean productivity over the past million years |
title_short |
Two modes of change in Southern Ocean productivity over the past million years |
title_full |
Two modes of change in Southern Ocean productivity over the past million years |
title_fullStr |
Two modes of change in Southern Ocean productivity over the past million years |
title_full_unstemmed |
Two modes of change in Southern Ocean productivity over the past million years |
title_sort |
two modes of change in southern ocean productivity over the past million years |
publisher |
Columbia University |
publishDate |
2013 |
url |
https://dx.doi.org/10.7916/d81835zv https://academiccommons.columbia.edu/doi/10.7916/D81835ZV |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
https://dx.doi.org/10.1126/science.1227545 |
op_doi |
https://doi.org/10.7916/d81835zv https://doi.org/10.1126/science.1227545 |
_version_ |
1766267255145889792 |