Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation
The phasing of millennial-scale oscillations in Antarctica relative to those elsewhere in the world is important for discriminating among models for abrupt climate change, particularly those involving the Southern Ocean. However, records of millennial-scale variability from Antarctica dating to the...
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ftunivwaikato:oai:researchcommons.waikato.ac.nz:10289/5082 2023-12-10T09:42:02+01:00 Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation Hall, Brenda L. Denton, George H. Fountain, Andrew G. Hendy, Chris H. Henderson, Gideon M. 2010 https://hdl.handle.net/10289/5082 https://doi.org/10.1073/pnas.1007250107 en eng National Academy of Sciences http://www.pnas.org/content/107/50/21355.abstract Proceedings of the National Academy of Sciences of the United States of America Hall, B.L., Denton, G.H., Fountain, A.G., Hendy, C.H. & Henderson, G.M. (2010). Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation. Proceedings of the National Academy of Sciences of the United States of America, 107(50), 21355-21359. https://hdl.handle.net/10289/5082 doi:10.1073/pnas.1007250107 Antarctica Dry Valleys lake-level change radiocarbon Journal Article 2010 ftunivwaikato https://doi.org/10.1073/pnas.1007250107 2023-11-14T18:25:29Z The phasing of millennial-scale oscillations in Antarctica relative to those elsewhere in the world is important for discriminating among models for abrupt climate change, particularly those involving the Southern Ocean. However, records of millennial-scale variability from Antarctica dating to the last glacial maximum are rare and rely heavily on data from widely spaced ice cores, some of which show little variability through that time. Here, we present new data from closed-basin lakes in the Dry Valleys region of East Antarctica that show high-magnitude, high-frequency oscillations in surface level during the late Pleistocene synchronous with climate fluctuations elsewhere in the Southern Hemisphere. These data suggest a coherent Southern Hemisphere pattern of climate change on millennial time scales, at least in the Pacific sector, and indicate that any hypothesis concerning the origin of these events must account for synchronous changes in both high and temperate latitudes. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Southern Ocean The University of Waikato: Research Commons Antarctic Southern Ocean East Antarctica Pacific Proceedings of the National Academy of Sciences 107 50 21355 21359 |
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The University of Waikato: Research Commons |
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ftunivwaikato |
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English |
topic |
Antarctica Dry Valleys lake-level change radiocarbon |
spellingShingle |
Antarctica Dry Valleys lake-level change radiocarbon Hall, Brenda L. Denton, George H. Fountain, Andrew G. Hendy, Chris H. Henderson, Gideon M. Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation |
topic_facet |
Antarctica Dry Valleys lake-level change radiocarbon |
description |
The phasing of millennial-scale oscillations in Antarctica relative to those elsewhere in the world is important for discriminating among models for abrupt climate change, particularly those involving the Southern Ocean. However, records of millennial-scale variability from Antarctica dating to the last glacial maximum are rare and rely heavily on data from widely spaced ice cores, some of which show little variability through that time. Here, we present new data from closed-basin lakes in the Dry Valleys region of East Antarctica that show high-magnitude, high-frequency oscillations in surface level during the late Pleistocene synchronous with climate fluctuations elsewhere in the Southern Hemisphere. These data suggest a coherent Southern Hemisphere pattern of climate change on millennial time scales, at least in the Pacific sector, and indicate that any hypothesis concerning the origin of these events must account for synchronous changes in both high and temperate latitudes. |
format |
Article in Journal/Newspaper |
author |
Hall, Brenda L. Denton, George H. Fountain, Andrew G. Hendy, Chris H. Henderson, Gideon M. |
author_facet |
Hall, Brenda L. Denton, George H. Fountain, Andrew G. Hendy, Chris H. Henderson, Gideon M. |
author_sort |
Hall, Brenda L. |
title |
Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation |
title_short |
Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation |
title_full |
Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation |
title_fullStr |
Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation |
title_full_unstemmed |
Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation |
title_sort |
antarctic lakes suggest millennial reorganizations of southern hemisphere atmospheric and oceanic circulation |
publisher |
National Academy of Sciences |
publishDate |
2010 |
url |
https://hdl.handle.net/10289/5082 https://doi.org/10.1073/pnas.1007250107 |
geographic |
Antarctic Southern Ocean East Antarctica Pacific |
geographic_facet |
Antarctic Southern Ocean East Antarctica Pacific |
genre |
Antarc* Antarctic Antarctica East Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Southern Ocean |
op_relation |
http://www.pnas.org/content/107/50/21355.abstract Proceedings of the National Academy of Sciences of the United States of America Hall, B.L., Denton, G.H., Fountain, A.G., Hendy, C.H. & Henderson, G.M. (2010). Antarctic lakes suggest millennial reorganizations of Southern Hemisphere atmospheric and oceanic circulation. Proceedings of the National Academy of Sciences of the United States of America, 107(50), 21355-21359. https://hdl.handle.net/10289/5082 doi:10.1073/pnas.1007250107 |
op_doi |
https://doi.org/10.1073/pnas.1007250107 |
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Proceedings of the National Academy of Sciences |
container_volume |
107 |
container_issue |
50 |
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21355 |
op_container_end_page |
21359 |
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1784884782748925952 |