Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period
The last glacial period is characterized by a number of millennial climate events that have been identified in both Greenland and Antarctic ice cores and that are abrupt in Greenland climate records. The mechanisms governing this climate variability remain a puzzle that requires a precise synchroniz...
Published in: | Climate of the Past |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus GmbH
2020
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Online Access: | https://lup.lub.lu.se/record/3a2b470e-299c-41de-91e5-463481647fad https://doi.org/10.5194/cp-16-1565-2020 |
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ftulundlup:oai:lup.lub.lu.se:3a2b470e-299c-41de-91e5-463481647fad 2023-05-15T13:34:07+02:00 Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period Svensson, Anders Dahl-Jensen, Dorthe Steffensen, Jørgen Peder Blunier, Thomas Rasmussen, Sune O. Vinther, Bo M. Vallelonga, Paul Capron, Emilie Gkinis, Vasileios Cook, Eliza Astrid Kjær, Helle Muscheler, Raimund Kipfstuhl, Sepp Wilhelms, Frank Stocker, Thomas F. Fischer, Hubertus Adolphi, Florian Erhardt, Tobias Sigl, Michael Landais, Amaelle Parrenin, Frédéric Buizert, Christo McConnell, Joseph R. Severi, Mirko Mulvaney, Robert Bigler, Matthias 2020 https://lup.lub.lu.se/record/3a2b470e-299c-41de-91e5-463481647fad https://doi.org/10.5194/cp-16-1565-2020 eng eng Copernicus GmbH https://lup.lub.lu.se/record/3a2b470e-299c-41de-91e5-463481647fad http://dx.doi.org/10.5194/cp-16-1565-2020 scopus:85094944715 Climate of the Past; 16(4), pp 1565-1580 (2020) ISSN: 1814-9324 Climate Research contributiontojournal/article info:eu-repo/semantics/article text 2020 ftulundlup https://doi.org/10.5194/cp-16-1565-2020 2023-02-01T23:40:04Z The last glacial period is characterized by a number of millennial climate events that have been identified in both Greenland and Antarctic ice cores and that are abrupt in Greenland climate records. The mechanisms governing this climate variability remain a puzzle that requires a precise synchronization of ice cores from the two hemispheres to be resolved. Previously, Greenland and Antarctic ice cores have been synchronized primarily via their common records of gas concentrations or isotopes from the trapped air and via cosmogenic isotopes measured on the ice. In this work, we apply ice core volcanic proxies and annual layer counting to identify large volcanic eruptions that have left a signature in both Greenland and Antarctica. Generally, no tephra is associated with those eruptions in the ice cores, so the source of the eruptions cannot be identified. Instead, we identify and match sequences of volcanic eruptions with bipolar distribution of sulfate, i.e. unique patterns of volcanic events separated by the same number of years at the two poles. Using this approach, we pinpoint 82 large bipolar volcanic eruptions throughout the second half of the last glacial period (12-60ka). This improved ice core synchronization is applied to determine the bipolar phasing of abrupt climate change events at decadal-scale precision. In response to Greenland abrupt climatic transitions, we find a response in the Antarctic water isotope signals (δ18O and deuterium excess) that is both more immediate and more abrupt than that found with previous gas-based interpolar synchronizations, providing additional support for our volcanic framework. On average, the Antarctic bipolar seesaw climate response lags the midpoint of Greenland abrupt δ18O transitions by 122±24 years. The time difference between Antarctic signals in deuterium excess and δ18O, which likewise informs the time needed to propagate the signal as described by the theory of the bipolar seesaw but is less sensitive to synchronization errors, suggests an Antarctic δ18O ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland ice core Lund University Publications (LUP) Antarctic The Antarctic Greenland Climate of the Past 16 4 1565 1580 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Climate Research |
spellingShingle |
Climate Research Svensson, Anders Dahl-Jensen, Dorthe Steffensen, Jørgen Peder Blunier, Thomas Rasmussen, Sune O. Vinther, Bo M. Vallelonga, Paul Capron, Emilie Gkinis, Vasileios Cook, Eliza Astrid Kjær, Helle Muscheler, Raimund Kipfstuhl, Sepp Wilhelms, Frank Stocker, Thomas F. Fischer, Hubertus Adolphi, Florian Erhardt, Tobias Sigl, Michael Landais, Amaelle Parrenin, Frédéric Buizert, Christo McConnell, Joseph R. Severi, Mirko Mulvaney, Robert Bigler, Matthias Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period |
topic_facet |
Climate Research |
description |
The last glacial period is characterized by a number of millennial climate events that have been identified in both Greenland and Antarctic ice cores and that are abrupt in Greenland climate records. The mechanisms governing this climate variability remain a puzzle that requires a precise synchronization of ice cores from the two hemispheres to be resolved. Previously, Greenland and Antarctic ice cores have been synchronized primarily via their common records of gas concentrations or isotopes from the trapped air and via cosmogenic isotopes measured on the ice. In this work, we apply ice core volcanic proxies and annual layer counting to identify large volcanic eruptions that have left a signature in both Greenland and Antarctica. Generally, no tephra is associated with those eruptions in the ice cores, so the source of the eruptions cannot be identified. Instead, we identify and match sequences of volcanic eruptions with bipolar distribution of sulfate, i.e. unique patterns of volcanic events separated by the same number of years at the two poles. Using this approach, we pinpoint 82 large bipolar volcanic eruptions throughout the second half of the last glacial period (12-60ka). This improved ice core synchronization is applied to determine the bipolar phasing of abrupt climate change events at decadal-scale precision. In response to Greenland abrupt climatic transitions, we find a response in the Antarctic water isotope signals (δ18O and deuterium excess) that is both more immediate and more abrupt than that found with previous gas-based interpolar synchronizations, providing additional support for our volcanic framework. On average, the Antarctic bipolar seesaw climate response lags the midpoint of Greenland abrupt δ18O transitions by 122±24 years. The time difference between Antarctic signals in deuterium excess and δ18O, which likewise informs the time needed to propagate the signal as described by the theory of the bipolar seesaw but is less sensitive to synchronization errors, suggests an Antarctic δ18O ... |
format |
Article in Journal/Newspaper |
author |
Svensson, Anders Dahl-Jensen, Dorthe Steffensen, Jørgen Peder Blunier, Thomas Rasmussen, Sune O. Vinther, Bo M. Vallelonga, Paul Capron, Emilie Gkinis, Vasileios Cook, Eliza Astrid Kjær, Helle Muscheler, Raimund Kipfstuhl, Sepp Wilhelms, Frank Stocker, Thomas F. Fischer, Hubertus Adolphi, Florian Erhardt, Tobias Sigl, Michael Landais, Amaelle Parrenin, Frédéric Buizert, Christo McConnell, Joseph R. Severi, Mirko Mulvaney, Robert Bigler, Matthias |
author_facet |
Svensson, Anders Dahl-Jensen, Dorthe Steffensen, Jørgen Peder Blunier, Thomas Rasmussen, Sune O. Vinther, Bo M. Vallelonga, Paul Capron, Emilie Gkinis, Vasileios Cook, Eliza Astrid Kjær, Helle Muscheler, Raimund Kipfstuhl, Sepp Wilhelms, Frank Stocker, Thomas F. Fischer, Hubertus Adolphi, Florian Erhardt, Tobias Sigl, Michael Landais, Amaelle Parrenin, Frédéric Buizert, Christo McConnell, Joseph R. Severi, Mirko Mulvaney, Robert Bigler, Matthias |
author_sort |
Svensson, Anders |
title |
Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period |
title_short |
Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period |
title_full |
Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period |
title_fullStr |
Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period |
title_full_unstemmed |
Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period |
title_sort |
bipolar volcanic synchronization of abrupt climate change in greenland and antarctic ice cores during the last glacial period |
publisher |
Copernicus GmbH |
publishDate |
2020 |
url |
https://lup.lub.lu.se/record/3a2b470e-299c-41de-91e5-463481647fad https://doi.org/10.5194/cp-16-1565-2020 |
geographic |
Antarctic The Antarctic Greenland |
geographic_facet |
Antarctic The Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Greenland ice core |
genre_facet |
Antarc* Antarctic Antarctica Greenland ice core |
op_source |
Climate of the Past; 16(4), pp 1565-1580 (2020) ISSN: 1814-9324 |
op_relation |
https://lup.lub.lu.se/record/3a2b470e-299c-41de-91e5-463481647fad http://dx.doi.org/10.5194/cp-16-1565-2020 scopus:85094944715 |
op_doi |
https://doi.org/10.5194/cp-16-1565-2020 |
container_title |
Climate of the Past |
container_volume |
16 |
container_issue |
4 |
container_start_page |
1565 |
op_container_end_page |
1580 |
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1766049030347948032 |