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 |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Copernicus Publications
2020
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/59070/ https://epic.awi.de/id/eprint/59070/1/Svensson_et_al_2020.pdf https://doi.org/10.5194/cp-16-1565-2020 https://hdl.handle.net/10013/epic.e9d21b85-72b9-4362-ac7d-77139f36ad4f |
id |
ftawi:oai:epic.awi.de:59070 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 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 Publications |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/59070/ https://epic.awi.de/id/eprint/59070/1/Svensson_et_al_2020.pdf https://doi.org/10.5194/cp-16-1565-2020 https://hdl.handle.net/10013/epic.e9d21b85-72b9-4362-ac7d-77139f36ad4f |
genre |
Antarc* Antarctic Antarctica Greenland ice core |
genre_facet |
Antarc* Antarctic Antarctica Greenland ice core |
op_source |
EPIC3Climate of the Past, Copernicus Publications, 16(4), pp. 1565-1580, ISSN: 1814-9324 |
op_relation |
https://epic.awi.de/id/eprint/59070/1/Svensson_et_al_2020.pdf Svensson, A. , Dahl-Jensen, D. , Steffensen, J. P. , Blunier, T. , Rasmussen, S. O. , Vinther, B. M. , Vallelonga, P. , Capron, E. , Gkinis, V. , Cook, E. , Kjær, H. A. , Muscheler, R. , Kipfstuhl, S. , Wilhelms, F. , Stocker, T. F. , Fischer, H. , Adolphi, F. , Erhardt, T. orcid:0000-0002-6683-6746 , Sigl, M. , Landais, A. , Parrenin, F. , Buizert, C. , McConnell, J. R. , Severi, M. , Mulvaney, R. and Bigler, M. (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), pp. 1565-1580 . doi:10.5194/cp-16-1565-2020 <https://doi.org/10.5194/cp-16-1565-2020> , hdl:10013/epic.e9d21b85-72b9-4362-ac7d-77139f36ad4f |
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 |
_version_ |
1810496739370598400 |
spelling |
ftawi:oai:epic.awi.de:59070 2024-09-15T17:47:26+00:00 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 application/pdf https://epic.awi.de/id/eprint/59070/ https://epic.awi.de/id/eprint/59070/1/Svensson_et_al_2020.pdf https://doi.org/10.5194/cp-16-1565-2020 https://hdl.handle.net/10013/epic.e9d21b85-72b9-4362-ac7d-77139f36ad4f unknown Copernicus Publications https://epic.awi.de/id/eprint/59070/1/Svensson_et_al_2020.pdf Svensson, A. , Dahl-Jensen, D. , Steffensen, J. P. , Blunier, T. , Rasmussen, S. O. , Vinther, B. M. , Vallelonga, P. , Capron, E. , Gkinis, V. , Cook, E. , Kjær, H. A. , Muscheler, R. , Kipfstuhl, S. , Wilhelms, F. , Stocker, T. F. , Fischer, H. , Adolphi, F. , Erhardt, T. orcid:0000-0002-6683-6746 , Sigl, M. , Landais, A. , Parrenin, F. , Buizert, C. , McConnell, J. R. , Severi, M. , Mulvaney, R. and Bigler, M. (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), pp. 1565-1580 . doi:10.5194/cp-16-1565-2020 <https://doi.org/10.5194/cp-16-1565-2020> , hdl:10013/epic.e9d21b85-72b9-4362-ac7d-77139f36ad4f EPIC3Climate of the Past, Copernicus Publications, 16(4), pp. 1565-1580, ISSN: 1814-9324 Article isiRev 2020 ftawi https://doi.org/10.5194/cp-16-1565-2020 2024-09-02T14:07:29Z 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Climate of the Past 16 4 1565 1580 |