The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink, supplementary datasets
Reduced surface-deep ocean exchange and enhanced nutrient consumption by phytoplankton in the Southern Ocean have been linked to lower glacial atmospheric CO2. However, identification of the biological and physical conditions involved and the related processes remains incomplete. Here we specify Sou...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.854121 2023-05-15T18:17:29+02:00 The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink, supplementary datasets Abelmann, Andrea Gersonde, Rainer Knorr, Gregor Zhang, Xu Chapligin, Bernhard Maier, Edith Esper, Oliver Friedrichsen, Hans Lohmann, Gerrit Meyer, Hanno Tiedemann, Ralf MEDIAN LATITUDE: -51.293999 * MEDIAN LONGITUDE: -2.816960 * SOUTH-BOUND LATITUDE: -59.465300 * WEST-BOUND LONGITUDE: -25.700000 * NORTH-BOUND LATITUDE: -41.748167 * EAST-BOUND LONGITUDE: 4.476000 * DATE/TIME START: 1989-11-11T21:40:00 * DATE/TIME END: 2002-12-07T15:36:00 2015-10-21 application/zip, 12 datasets https://doi.pangaea.de/10.1594/PANGAEA.854121 https://doi.org/10.1594/PANGAEA.854121 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.854121 https://doi.org/10.1594/PANGAEA.854121 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Abelmann, Andrea; Gersonde, Rainer; Knorr, Gregor; Zhang, Xu; Chapligin, Bernhard; Maier, Edith; Esper, Oliver; Friedrichsen, Hans; Lohmann, Gerrit; Meyer, Hanno; Tiedemann, Ralf (2015): The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink. Nature Communications, 6, 8136, https://doi.org/10.1038/ncomms9136 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.854121 https://doi.org/10.1038/ncomms9136 2023-01-20T07:33:36Z Reduced surface-deep ocean exchange and enhanced nutrient consumption by phytoplankton in the Southern Ocean have been linked to lower glacial atmospheric CO2. However, identification of the biological and physical conditions involved and the related processes remains incomplete. Here we specify Southern Ocean surface-subsurface contrasts using a new tool, the combined oxygen and silicon isotope measurement of diatom and radiolarian opal, in combination with numerical simulations. Our data do not indicate a permanent glacial halocline related to melt water from icebergs. Corroborated by numerical simulations, we find that glacial surface stratification was variable and linked to seasonal sea-ice changes. During glacial spring-summer, the mixed layer was relatively shallow, while deeper mixing occurred during fall-winter, allowing for surface-ocean refueling with nutrients from the deep reservoir, which was potentially richer in nutrients than today. This generated specific carbon and opal export regimes turning the glacial seasonal sea-ice zone into a carbon sink. Dataset Sea ice Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Southern Ocean ENVELOPE(-25.700000,4.476000,-41.748167,-59.465300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Abelmann, Andrea Gersonde, Rainer Knorr, Gregor Zhang, Xu Chapligin, Bernhard Maier, Edith Esper, Oliver Friedrichsen, Hans Lohmann, Gerrit Meyer, Hanno Tiedemann, Ralf The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink, supplementary datasets |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
Reduced surface-deep ocean exchange and enhanced nutrient consumption by phytoplankton in the Southern Ocean have been linked to lower glacial atmospheric CO2. However, identification of the biological and physical conditions involved and the related processes remains incomplete. Here we specify Southern Ocean surface-subsurface contrasts using a new tool, the combined oxygen and silicon isotope measurement of diatom and radiolarian opal, in combination with numerical simulations. Our data do not indicate a permanent glacial halocline related to melt water from icebergs. Corroborated by numerical simulations, we find that glacial surface stratification was variable and linked to seasonal sea-ice changes. During glacial spring-summer, the mixed layer was relatively shallow, while deeper mixing occurred during fall-winter, allowing for surface-ocean refueling with nutrients from the deep reservoir, which was potentially richer in nutrients than today. This generated specific carbon and opal export regimes turning the glacial seasonal sea-ice zone into a carbon sink. |
format |
Dataset |
author |
Abelmann, Andrea Gersonde, Rainer Knorr, Gregor Zhang, Xu Chapligin, Bernhard Maier, Edith Esper, Oliver Friedrichsen, Hans Lohmann, Gerrit Meyer, Hanno Tiedemann, Ralf |
author_facet |
Abelmann, Andrea Gersonde, Rainer Knorr, Gregor Zhang, Xu Chapligin, Bernhard Maier, Edith Esper, Oliver Friedrichsen, Hans Lohmann, Gerrit Meyer, Hanno Tiedemann, Ralf |
author_sort |
Abelmann, Andrea |
title |
The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink, supplementary datasets |
title_short |
The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink, supplementary datasets |
title_full |
The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink, supplementary datasets |
title_fullStr |
The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink, supplementary datasets |
title_full_unstemmed |
The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink, supplementary datasets |
title_sort |
seasonal sea-ice zone in the glacial southern ocean as a carbon sink, supplementary datasets |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.854121 https://doi.org/10.1594/PANGAEA.854121 |
op_coverage |
MEDIAN LATITUDE: -51.293999 * MEDIAN LONGITUDE: -2.816960 * SOUTH-BOUND LATITUDE: -59.465300 * WEST-BOUND LONGITUDE: -25.700000 * NORTH-BOUND LATITUDE: -41.748167 * EAST-BOUND LONGITUDE: 4.476000 * DATE/TIME START: 1989-11-11T21:40:00 * DATE/TIME END: 2002-12-07T15:36:00 |
long_lat |
ENVELOPE(-25.700000,4.476000,-41.748167,-59.465300) |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Sea ice Southern Ocean |
genre_facet |
Sea ice Southern Ocean |
op_source |
Supplement to: Abelmann, Andrea; Gersonde, Rainer; Knorr, Gregor; Zhang, Xu; Chapligin, Bernhard; Maier, Edith; Esper, Oliver; Friedrichsen, Hans; Lohmann, Gerrit; Meyer, Hanno; Tiedemann, Ralf (2015): The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink. Nature Communications, 6, 8136, https://doi.org/10.1038/ncomms9136 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.854121 https://doi.org/10.1594/PANGAEA.854121 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.854121 https://doi.org/10.1038/ncomms9136 |
_version_ |
1766191728026451968 |