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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Online Access: | http://nora.nerc.ac.uk/id/eprint/528450/ https://nora.nerc.ac.uk/id/eprint/528450/1/cp-16-1565-2020.pdf https://doi.org/10.5194/cp-16-1565-2020 |
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ftnerc:oai:nora.nerc.ac.uk:528450 2023-05-15T13:41:45+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 Kjær, Helle Astrid 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 2020-08-19 text http://nora.nerc.ac.uk/id/eprint/528450/ https://nora.nerc.ac.uk/id/eprint/528450/1/cp-16-1565-2020.pdf https://doi.org/10.5194/cp-16-1565-2020 en eng Copernicus https://nora.nerc.ac.uk/id/eprint/528450/1/cp-16-1565-2020.pdf Svensson, Anders; Dahl-Jensen, Dorthe; Steffensen, Jørgen Peder; Blunier, Thomas; Rasmussen, Sune O.; Vinther, Bo M.; Vallelonga, Paul; Capron, Emilie; Gkinis, Vasileios; Cook, Eliza; Kjær, Helle Astrid; 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 orcid:0000-0002-5372-8148 Bigler, Matthias. 2020 Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period. Climate of the Past, 16 (4). 1565-1580. https://doi.org/10.5194/cp-16-1565-2020 <https://doi.org/10.5194/cp-16-1565-2020> cc_by_4 CC-BY Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.5194/cp-16-1565-2020 2023-02-04T19:51:03Z 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 (12-60 ka). 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 (delta O-18 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 delta O-18 transitions by 122 +/- 24 years. The time difference between Antarctic signals in deuterium excess and delta O-18, 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, ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland ice core Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Greenland Climate of the Past 16 4 1565 1580 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
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 (12-60 ka). 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 (delta O-18 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 delta O-18 transitions by 122 +/- 24 years. The time difference between Antarctic signals in deuterium excess and delta O-18, 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, ... |
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 Kjær, Helle Astrid 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 |
spellingShingle |
Svensson, Anders Dahl-Jensen, Dorthe Steffensen, Jørgen Peder Blunier, Thomas Rasmussen, Sune O. Vinther, Bo M. Vallelonga, Paul Capron, Emilie Gkinis, Vasileios Cook, Eliza Kjær, Helle Astrid 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 |
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 Kjær, Helle Astrid 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 |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/528450/ https://nora.nerc.ac.uk/id/eprint/528450/1/cp-16-1565-2020.pdf 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_relation |
https://nora.nerc.ac.uk/id/eprint/528450/1/cp-16-1565-2020.pdf Svensson, Anders; Dahl-Jensen, Dorthe; Steffensen, Jørgen Peder; Blunier, Thomas; Rasmussen, Sune O.; Vinther, Bo M.; Vallelonga, Paul; Capron, Emilie; Gkinis, Vasileios; Cook, Eliza; Kjær, Helle Astrid; 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 orcid:0000-0002-5372-8148 Bigler, Matthias. 2020 Bipolar volcanic synchronization of abrupt climate change in Greenland and Antarctic ice cores during the last glacial period. Climate of the Past, 16 (4). 1565-1580. https://doi.org/10.5194/cp-16-1565-2020 <https://doi.org/10.5194/cp-16-1565-2020> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-16-1565-2020 |
container_title |
Climate of the Past |
container_volume |
16 |
container_issue |
4 |
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1565 |
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1580 |
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1766157030982156288 |