Long-term sea surface temperature and climate change in the Australian-New Zealand region
We compile and compare data for the last 150,000 years from four deep-sea cores in the midlatitude zone of the Southern Hemisphere. We recalculate sea surface temperature estimates derived from foraminifera and compare these with estimates derived from alkenones and magnesium/ calcium ratios in fora...
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American Geophysical Union
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Online Access: | http://hdl.handle.net/1885/30467 https://doi.org/10.1029/2006PA001328 https://openresearch-repository.anu.edu.au/bitstream/1885/30467/5/ANUP1803.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/30467/7/01_Barrows_Long-term_sea_surface_2007.pdf.jpg |
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/30467 2024-01-14T10:01:39+01:00 Long-term sea surface temperature and climate change in the Australian-New Zealand region Barrows, Timothy Juggins, Steve De Deckker, Patrick Calvo, E Pelejero, Carles http://hdl.handle.net/1885/30467 https://doi.org/10.1029/2006PA001328 https://openresearch-repository.anu.edu.au/bitstream/1885/30467/5/ANUP1803.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/30467/7/01_Barrows_Long-term_sea_surface_2007.pdf.jpg unknown American Geophysical Union 0883-8305 http://hdl.handle.net/1885/30467 doi:10.1029/2006PA001328 https://openresearch-repository.anu.edu.au/bitstream/1885/30467/5/ANUP1803.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/30467/7/01_Barrows_Long-term_sea_surface_2007.pdf.jpg Paleoceanography Keywords: climate change foraminifera long-term change Northern Hemisphere paleoceanography paleotemperature palynology sea surface temperature sedimentology Southern Hemisphere Australasia Australia New Zealand Southern Ocean Journal article ftanucanberra https://doi.org/10.1029/2006PA001328 2023-12-15T09:39:19Z We compile and compare data for the last 150,000 years from four deep-sea cores in the midlatitude zone of the Southern Hemisphere. We recalculate sea surface temperature estimates derived from foraminifera and compare these with estimates derived from alkenones and magnesium/ calcium ratios in foraminiferal carbonate and with accompanying sedimentological and pollen records on a common absolute timescale. Using a stack of the highest-resolution records, we find that first-order climate change occurs in concert with changes in insolation in the Northern Hemisphere. Glacier extent and inferred vegetation changes in Australia and New Zealand vary in tandem with sea surface temperatures, signifying close links between oceanic and terrestrial temperature. In the Southern Ocean, rapid temperature change of the order of 6°C occurs within a few centuries and appears to have played an important role in midlatitude climate change. Sea surface temperature changes over longer periods closely match proxy temperature records from Antarctic ice cores. Warm events correlate with Antarctic events A1-A4 and appear to occur just before Dansgaard-Oeschger events 8, 12, 14, and 17 in Greenland. Article in Journal/Newspaper Antarc* Antarctic Dansgaard-Oeschger events glacier Greenland Southern Ocean Australian National University: ANU Digital Collections Antarctic Southern Ocean Greenland New Zealand Paleoceanography 22 2 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: climate change foraminifera long-term change Northern Hemisphere paleoceanography paleotemperature palynology sea surface temperature sedimentology Southern Hemisphere Australasia Australia New Zealand Southern Ocean |
spellingShingle |
Keywords: climate change foraminifera long-term change Northern Hemisphere paleoceanography paleotemperature palynology sea surface temperature sedimentology Southern Hemisphere Australasia Australia New Zealand Southern Ocean Barrows, Timothy Juggins, Steve De Deckker, Patrick Calvo, E Pelejero, Carles Long-term sea surface temperature and climate change in the Australian-New Zealand region |
topic_facet |
Keywords: climate change foraminifera long-term change Northern Hemisphere paleoceanography paleotemperature palynology sea surface temperature sedimentology Southern Hemisphere Australasia Australia New Zealand Southern Ocean |
description |
We compile and compare data for the last 150,000 years from four deep-sea cores in the midlatitude zone of the Southern Hemisphere. We recalculate sea surface temperature estimates derived from foraminifera and compare these with estimates derived from alkenones and magnesium/ calcium ratios in foraminiferal carbonate and with accompanying sedimentological and pollen records on a common absolute timescale. Using a stack of the highest-resolution records, we find that first-order climate change occurs in concert with changes in insolation in the Northern Hemisphere. Glacier extent and inferred vegetation changes in Australia and New Zealand vary in tandem with sea surface temperatures, signifying close links between oceanic and terrestrial temperature. In the Southern Ocean, rapid temperature change of the order of 6°C occurs within a few centuries and appears to have played an important role in midlatitude climate change. Sea surface temperature changes over longer periods closely match proxy temperature records from Antarctic ice cores. Warm events correlate with Antarctic events A1-A4 and appear to occur just before Dansgaard-Oeschger events 8, 12, 14, and 17 in Greenland. |
format |
Article in Journal/Newspaper |
author |
Barrows, Timothy Juggins, Steve De Deckker, Patrick Calvo, E Pelejero, Carles |
author_facet |
Barrows, Timothy Juggins, Steve De Deckker, Patrick Calvo, E Pelejero, Carles |
author_sort |
Barrows, Timothy |
title |
Long-term sea surface temperature and climate change in the Australian-New Zealand region |
title_short |
Long-term sea surface temperature and climate change in the Australian-New Zealand region |
title_full |
Long-term sea surface temperature and climate change in the Australian-New Zealand region |
title_fullStr |
Long-term sea surface temperature and climate change in the Australian-New Zealand region |
title_full_unstemmed |
Long-term sea surface temperature and climate change in the Australian-New Zealand region |
title_sort |
long-term sea surface temperature and climate change in the australian-new zealand region |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/1885/30467 https://doi.org/10.1029/2006PA001328 https://openresearch-repository.anu.edu.au/bitstream/1885/30467/5/ANUP1803.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/30467/7/01_Barrows_Long-term_sea_surface_2007.pdf.jpg |
geographic |
Antarctic Southern Ocean Greenland New Zealand |
geographic_facet |
Antarctic Southern Ocean Greenland New Zealand |
genre |
Antarc* Antarctic Dansgaard-Oeschger events glacier Greenland Southern Ocean |
genre_facet |
Antarc* Antarctic Dansgaard-Oeschger events glacier Greenland Southern Ocean |
op_source |
Paleoceanography |
op_relation |
0883-8305 http://hdl.handle.net/1885/30467 doi:10.1029/2006PA001328 https://openresearch-repository.anu.edu.au/bitstream/1885/30467/5/ANUP1803.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/30467/7/01_Barrows_Long-term_sea_surface_2007.pdf.jpg |
op_doi |
https://doi.org/10.1029/2006PA001328 |
container_title |
Paleoceanography |
container_volume |
22 |
container_issue |
2 |
_version_ |
1788067416136220672 |