Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age
The concentration of atmospheric carbon dioxide (pCO2) varies by 80–100 ppm on glacial–interglacial timescales, with lower pCO2 during the ice ages. In the modern Southern Ocean, the surface nutrients are not fully consumed by phytoplankton, resulting in leakage of deeply sequestered CO2 to the atmo...
Published in: | Proceedings of the National Academy of Sciences |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
National Academy of Sciences
2017
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380069/ http://www.ncbi.nlm.nih.gov/pubmed/28298529 https://doi.org/10.1073/pnas.1615718114 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:5380069 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:5380069 2023-05-15T18:23:40+02:00 Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age Wang, Xingchen Tony Sigman, Daniel M. Prokopenko, Maria G. Adkins, Jess F. Robinson, Laura F. Hines, Sophia K. Chai, Junyi Studer, Anja S. Martínez-García, Alfredo Chen, Tianyu Haug, Gerald H. 2017-03-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380069/ http://www.ncbi.nlm.nih.gov/pubmed/28298529 https://doi.org/10.1073/pnas.1615718114 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380069/ http://www.ncbi.nlm.nih.gov/pubmed/28298529 http://dx.doi.org/10.1073/pnas.1615718114 Physical Sciences Text 2017 ftpubmed https://doi.org/10.1073/pnas.1615718114 2017-10-01T00:02:46Z The concentration of atmospheric carbon dioxide (pCO2) varies by 80–100 ppm on glacial–interglacial timescales, with lower pCO2 during the ice ages. In the modern Southern Ocean, the surface nutrients are not fully consumed by phytoplankton, resulting in leakage of deeply sequestered CO2 to the atmosphere. It has been suggested that more complete nutrient consumption in the Southern Ocean would have caused the lower pCO2 during the ice ages. Here, we provide the most spatially comprehensive evidence to date in support of the proposal that the entire Southern Ocean was nutrient-depleted during the last ice age relative to modern conditions. These data are consistent with the hypothesis that Southern Ocean changes contributed to the lower atmospheric pCO2 of the ice ages. Text Southern Ocean PubMed Central (PMC) Southern Ocean Proceedings of the National Academy of Sciences 114 13 3352 3357 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Physical Sciences |
spellingShingle |
Physical Sciences Wang, Xingchen Tony Sigman, Daniel M. Prokopenko, Maria G. Adkins, Jess F. Robinson, Laura F. Hines, Sophia K. Chai, Junyi Studer, Anja S. Martínez-García, Alfredo Chen, Tianyu Haug, Gerald H. Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age |
topic_facet |
Physical Sciences |
description |
The concentration of atmospheric carbon dioxide (pCO2) varies by 80–100 ppm on glacial–interglacial timescales, with lower pCO2 during the ice ages. In the modern Southern Ocean, the surface nutrients are not fully consumed by phytoplankton, resulting in leakage of deeply sequestered CO2 to the atmosphere. It has been suggested that more complete nutrient consumption in the Southern Ocean would have caused the lower pCO2 during the ice ages. Here, we provide the most spatially comprehensive evidence to date in support of the proposal that the entire Southern Ocean was nutrient-depleted during the last ice age relative to modern conditions. These data are consistent with the hypothesis that Southern Ocean changes contributed to the lower atmospheric pCO2 of the ice ages. |
format |
Text |
author |
Wang, Xingchen Tony Sigman, Daniel M. Prokopenko, Maria G. Adkins, Jess F. Robinson, Laura F. Hines, Sophia K. Chai, Junyi Studer, Anja S. Martínez-García, Alfredo Chen, Tianyu Haug, Gerald H. |
author_facet |
Wang, Xingchen Tony Sigman, Daniel M. Prokopenko, Maria G. Adkins, Jess F. Robinson, Laura F. Hines, Sophia K. Chai, Junyi Studer, Anja S. Martínez-García, Alfredo Chen, Tianyu Haug, Gerald H. |
author_sort |
Wang, Xingchen Tony |
title |
Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age |
title_short |
Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age |
title_full |
Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age |
title_fullStr |
Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age |
title_full_unstemmed |
Deep-sea coral evidence for lower Southern Ocean surface nitrate concentrations during the last ice age |
title_sort |
deep-sea coral evidence for lower southern ocean surface nitrate concentrations during the last ice age |
publisher |
National Academy of Sciences |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380069/ http://www.ncbi.nlm.nih.gov/pubmed/28298529 https://doi.org/10.1073/pnas.1615718114 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380069/ http://www.ncbi.nlm.nih.gov/pubmed/28298529 http://dx.doi.org/10.1073/pnas.1615718114 |
op_doi |
https://doi.org/10.1073/pnas.1615718114 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
114 |
container_issue |
13 |
container_start_page |
3352 |
op_container_end_page |
3357 |
_version_ |
1766203726158102528 |