State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling
Climatic variabilities on millennial and longer time scales with a bipolar seesaw pattern have been documented in paleoclimatic records, but their frequencies, relationships with mean climatic state, and mechanisms remain unclear. Understanding the processes and sensitivities that underlie these cha...
Published in: | Science Advances |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://www.vliz.be/imisdocs/publications/299160.pdf |
id |
ftvliz:oai:oma.vliz.be:283305 |
---|---|
record_format |
openpolar |
spelling |
ftvliz:oai:oma.vliz.be:283305 2023-05-15T13:54:11+02:00 State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling Kawamura, K. Abe-Ouchi, A. Motoyama, H. Ageta, Y. Aoki, S. Azuma, N. Fujii, Y. Fujita, K. Fujita, S. Fukui, K. Furukawa, T. Furusaki, A. Goto-Azuma, K. Greve, R. Hirabayashi, M. Hondoh, T. Hori, A. Horikawa, S. Horiuchi, K. Igarashi, M. Iizuka, Y. Kameda, T. Kanda, H. Kohno, M. Kuramoto, A. Nagashima, Y. Nakayama, Y. Nakazawa, T. Nakazawa, F. Nishio, F. Obinata, I. Ohgaito, R. Oka, A. Okuno, J. Okuyama, J. Oyabu, I. Parrenin, F. Pattyn, F. Saito, F. Saito, T. Sakurai, T. Sasa, K. Seddik, H. Shibata, Y. Shinbori, K. Suzuki, K. Suzuki, T. Takahashi, A. Takahashi, S. Takata, M. Tanaka, Y. Uemura, R. Watanabe, G. Watanabe, O. Yamasaki, T. Yokoyama, K. Yoshimori, M. Yoshimoto, T. 2017 application/pdf https://www.vliz.be/imisdocs/publications/299160.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000397039500017 info:eu-repo/semantics/altIdentifier/doi/oi.org/10.1126/sciadv.1600446 https://www.vliz.be/imisdocs/publications/299160.pdf info:eu-repo/semantics/openAccess %3Ci%3EScience+Advances+3%282%29%3C%2Fi%3E%3A+e1600446.+%3Ca+href%3D%22http%3A%2F%2Fdx.doi.org%2F10.1126%2Fsciadv.1600446%22+target%3D%22_blank%22%3Ehttp%3A%2F%2Fdx.doi.org%2F10.1126%2Fsciadv.1600446%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 ftvliz https://doi.org/10.1126/sciadv.1600446 2022-05-01T10:47:21Z Climatic variabilities on millennial and longer time scales with a bipolar seesaw pattern have been documented in paleoclimatic records, but their frequencies, relationships with mean climatic state, and mechanisms remain unclear. Understanding the processes and sensitivities that underlie these changes will underpin better understanding of the climate system and projections of its future change. We investigate the long-term characteristics of climatic variability using a new ice-core record from Dome Fuji, East Antarctica, combined with an existing long record from the Dome C ice core. Antarctic warming events over the past 720,000 years are most frequent when the Antarctic temperature is slightly below average on orbital time scales, equivalent to an intermediate climate during glacial periods, whereas interglacial and fully glaciated climates are unfavourable for a millennial-scale bipolar seesaw. Numerical experiments using a fully coupled atmosphere-ocean general circulation model with freshwater hosing in the northern North Atlantic showed that climate becomes most unstable in intermediate glacial conditions associated with large changes in sea ice and the Atlantic Meridional Overturning Circulation. Model sensitivity experiments suggest that the prerequisite for the most frequent climate instability with bipolar seesaw pattern during the late Pleistocene era is associated with reduced atmospheric CO2 concentration via global cooling and sea ice formation in the North Atlantic, in addition to extended Northern Hemisphere ice sheets. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core North Atlantic Sea ice Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Antarctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) East Antarctica The Antarctic Science Advances 3 2 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
description |
Climatic variabilities on millennial and longer time scales with a bipolar seesaw pattern have been documented in paleoclimatic records, but their frequencies, relationships with mean climatic state, and mechanisms remain unclear. Understanding the processes and sensitivities that underlie these changes will underpin better understanding of the climate system and projections of its future change. We investigate the long-term characteristics of climatic variability using a new ice-core record from Dome Fuji, East Antarctica, combined with an existing long record from the Dome C ice core. Antarctic warming events over the past 720,000 years are most frequent when the Antarctic temperature is slightly below average on orbital time scales, equivalent to an intermediate climate during glacial periods, whereas interglacial and fully glaciated climates are unfavourable for a millennial-scale bipolar seesaw. Numerical experiments using a fully coupled atmosphere-ocean general circulation model with freshwater hosing in the northern North Atlantic showed that climate becomes most unstable in intermediate glacial conditions associated with large changes in sea ice and the Atlantic Meridional Overturning Circulation. Model sensitivity experiments suggest that the prerequisite for the most frequent climate instability with bipolar seesaw pattern during the late Pleistocene era is associated with reduced atmospheric CO2 concentration via global cooling and sea ice formation in the North Atlantic, in addition to extended Northern Hemisphere ice sheets. |
format |
Article in Journal/Newspaper |
author |
Kawamura, K. Abe-Ouchi, A. Motoyama, H. Ageta, Y. Aoki, S. Azuma, N. Fujii, Y. Fujita, K. Fujita, S. Fukui, K. Furukawa, T. Furusaki, A. Goto-Azuma, K. Greve, R. Hirabayashi, M. Hondoh, T. Hori, A. Horikawa, S. Horiuchi, K. Igarashi, M. Iizuka, Y. Kameda, T. Kanda, H. Kohno, M. Kuramoto, A. Nagashima, Y. Nakayama, Y. Nakazawa, T. Nakazawa, F. Nishio, F. Obinata, I. Ohgaito, R. Oka, A. Okuno, J. Okuyama, J. Oyabu, I. Parrenin, F. Pattyn, F. Saito, F. Saito, T. Sakurai, T. Sasa, K. Seddik, H. Shibata, Y. Shinbori, K. Suzuki, K. Suzuki, T. Takahashi, A. Takahashi, S. Takata, M. Tanaka, Y. Uemura, R. Watanabe, G. Watanabe, O. Yamasaki, T. Yokoyama, K. Yoshimori, M. Yoshimoto, T. |
spellingShingle |
Kawamura, K. Abe-Ouchi, A. Motoyama, H. Ageta, Y. Aoki, S. Azuma, N. Fujii, Y. Fujita, K. Fujita, S. Fukui, K. Furukawa, T. Furusaki, A. Goto-Azuma, K. Greve, R. Hirabayashi, M. Hondoh, T. Hori, A. Horikawa, S. Horiuchi, K. Igarashi, M. Iizuka, Y. Kameda, T. Kanda, H. Kohno, M. Kuramoto, A. Nagashima, Y. Nakayama, Y. Nakazawa, T. Nakazawa, F. Nishio, F. Obinata, I. Ohgaito, R. Oka, A. Okuno, J. Okuyama, J. Oyabu, I. Parrenin, F. Pattyn, F. Saito, F. Saito, T. Sakurai, T. Sasa, K. Seddik, H. Shibata, Y. Shinbori, K. Suzuki, K. Suzuki, T. Takahashi, A. Takahashi, S. Takata, M. Tanaka, Y. Uemura, R. Watanabe, G. Watanabe, O. Yamasaki, T. Yokoyama, K. Yoshimori, M. Yoshimoto, T. State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling |
author_facet |
Kawamura, K. Abe-Ouchi, A. Motoyama, H. Ageta, Y. Aoki, S. Azuma, N. Fujii, Y. Fujita, K. Fujita, S. Fukui, K. Furukawa, T. Furusaki, A. Goto-Azuma, K. Greve, R. Hirabayashi, M. Hondoh, T. Hori, A. Horikawa, S. Horiuchi, K. Igarashi, M. Iizuka, Y. Kameda, T. Kanda, H. Kohno, M. Kuramoto, A. Nagashima, Y. Nakayama, Y. Nakazawa, T. Nakazawa, F. Nishio, F. Obinata, I. Ohgaito, R. Oka, A. Okuno, J. Okuyama, J. Oyabu, I. Parrenin, F. Pattyn, F. Saito, F. Saito, T. Sakurai, T. Sasa, K. Seddik, H. Shibata, Y. Shinbori, K. Suzuki, K. Suzuki, T. Takahashi, A. Takahashi, S. Takata, M. Tanaka, Y. Uemura, R. Watanabe, G. Watanabe, O. Yamasaki, T. Yokoyama, K. Yoshimori, M. Yoshimoto, T. |
author_sort |
Kawamura, K. |
title |
State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling |
title_short |
State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling |
title_full |
State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling |
title_fullStr |
State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling |
title_full_unstemmed |
State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling |
title_sort |
state dependence of climatic instability over the past 720,000 years from antarctic ice cores and climate modeling |
publishDate |
2017 |
url |
https://www.vliz.be/imisdocs/publications/299160.pdf |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic Dome Fuji East Antarctica The Antarctic |
geographic_facet |
Antarctic Dome Fuji East Antarctica The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core North Atlantic Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core North Atlantic Sea ice |
op_source |
%3Ci%3EScience+Advances+3%282%29%3C%2Fi%3E%3A+e1600446.+%3Ca+href%3D%22http%3A%2F%2Fdx.doi.org%2F10.1126%2Fsciadv.1600446%22+target%3D%22_blank%22%3Ehttp%3A%2F%2Fdx.doi.org%2F10.1126%2Fsciadv.1600446%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000397039500017 info:eu-repo/semantics/altIdentifier/doi/oi.org/10.1126/sciadv.1600446 https://www.vliz.be/imisdocs/publications/299160.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1126/sciadv.1600446 |
container_title |
Science Advances |
container_volume |
3 |
container_issue |
2 |
_version_ |
1766259848702328832 |