The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years
High-resolution, well-dated climate archives provide an opportunity to investigate the dynamic interactions of climate patterns relevant for future projections. Here, we present data from a new, annually dated ice core record from the eastern Ross Sea, named the Roosevelt Island Climate Evolution (R...
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Copernicus Publications
2018
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Online Access: | https://doi.org/10.5194/cp-14-193-2018 https://doaj.org/article/f56c78664267465ebbeca6de5a2e1229 |
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ftdoajarticles:oai:doaj.org/article:f56c78664267465ebbeca6de5a2e1229 2023-05-15T14:01:25+02:00 The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years N. A. N. Bertler H. Conway D. Dahl-Jensen D. B. Emanuelsson M. Winstrup P. T. Vallelonga J. E. Lee E. J. Brook J. P. Severinghaus T. J. Fudge E. D. Keller W. T. Baisden R. C. A. Hindmarsh P. D. Neff T. Blunier R. Edwards P. A. Mayewski S. Kipfstuhl C. Buizert S. Canessa R. Dadic H. A. Kjær A. Kurbatov D. Zhang E. D. Waddington G. Baccolo T. Beers H. J. Brightley L. Carter D. Clemens-Sewall V. G. Ciobanu B. Delmonte L. Eling A. Ellis S. Ganesh N. R. Golledge S. Haines M. Handley R. L. Hawley 2018-02-01T00:00:00Z https://doi.org/10.5194/cp-14-193-2018 https://doaj.org/article/f56c78664267465ebbeca6de5a2e1229 EN eng Copernicus Publications https://www.clim-past.net/14/193/2018/cp-14-193-2018.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-14-193-2018 1814-9324 1814-9332 https://doaj.org/article/f56c78664267465ebbeca6de5a2e1229 Climate of the Past, Vol 14, Pp 193-214 (2018) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2018 ftdoajarticles https://doi.org/10.5194/cp-14-193-2018 2022-12-31T15:22:52Z High-resolution, well-dated climate archives provide an opportunity to investigate the dynamic interactions of climate patterns relevant for future projections. Here, we present data from a new, annually dated ice core record from the eastern Ross Sea, named the Roosevelt Island Climate Evolution (RICE) ice core. Comparison of this record with climate reanalysis data for the 1979–2012 interval shows that RICE reliably captures temperature and snow precipitation variability in the region. Trends over the past 2700 years in RICE are shown to be distinct from those in West Antarctica and the western Ross Sea captured by other ice cores. For most of this interval, the eastern Ross Sea was warming (or showing isotopic enrichment for other reasons), with increased snow accumulation and perhaps decreased sea ice concentration. However, West Antarctica cooled and the western Ross Sea showed no significant isotope temperature trend. This pattern here is referred to as the Ross Sea Dipole. Notably, during the Little Ice Age, West Antarctica and the western Ross Sea experienced colder than average temperatures, while the eastern Ross Sea underwent a period of warming or increased isotopic enrichment. From the 17th century onwards, this dipole relationship changed. All three regions show current warming, with snow accumulation declining in West Antarctica and the eastern Ross Sea but increasing in the western Ross Sea. We interpret this pattern as reflecting an increase in sea ice in the eastern Ross Sea with perhaps the establishment of a modern Roosevelt Island polynya as a local moisture source for RICE. Article in Journal/Newspaper Antarc* Antarctica ice core Roosevelt Island Ross Sea Sea ice West Antarctica Directory of Open Access Journals: DOAJ Articles Roosevelt Island ENVELOPE(-162.000,-162.000,-79.283,-79.283) Ross Sea West Antarctica Climate of the Past 14 2 193 214 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 N. A. N. Bertler H. Conway D. Dahl-Jensen D. B. Emanuelsson M. Winstrup P. T. Vallelonga J. E. Lee E. J. Brook J. P. Severinghaus T. J. Fudge E. D. Keller W. T. Baisden R. C. A. Hindmarsh P. D. Neff T. Blunier R. Edwards P. A. Mayewski S. Kipfstuhl C. Buizert S. Canessa R. Dadic H. A. Kjær A. Kurbatov D. Zhang E. D. Waddington G. Baccolo T. Beers H. J. Brightley L. Carter D. Clemens-Sewall V. G. Ciobanu B. Delmonte L. Eling A. Ellis S. Ganesh N. R. Golledge S. Haines M. Handley R. L. Hawley The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
High-resolution, well-dated climate archives provide an opportunity to investigate the dynamic interactions of climate patterns relevant for future projections. Here, we present data from a new, annually dated ice core record from the eastern Ross Sea, named the Roosevelt Island Climate Evolution (RICE) ice core. Comparison of this record with climate reanalysis data for the 1979–2012 interval shows that RICE reliably captures temperature and snow precipitation variability in the region. Trends over the past 2700 years in RICE are shown to be distinct from those in West Antarctica and the western Ross Sea captured by other ice cores. For most of this interval, the eastern Ross Sea was warming (or showing isotopic enrichment for other reasons), with increased snow accumulation and perhaps decreased sea ice concentration. However, West Antarctica cooled and the western Ross Sea showed no significant isotope temperature trend. This pattern here is referred to as the Ross Sea Dipole. Notably, during the Little Ice Age, West Antarctica and the western Ross Sea experienced colder than average temperatures, while the eastern Ross Sea underwent a period of warming or increased isotopic enrichment. From the 17th century onwards, this dipole relationship changed. All three regions show current warming, with snow accumulation declining in West Antarctica and the eastern Ross Sea but increasing in the western Ross Sea. We interpret this pattern as reflecting an increase in sea ice in the eastern Ross Sea with perhaps the establishment of a modern Roosevelt Island polynya as a local moisture source for RICE. |
format |
Article in Journal/Newspaper |
author |
N. A. N. Bertler H. Conway D. Dahl-Jensen D. B. Emanuelsson M. Winstrup P. T. Vallelonga J. E. Lee E. J. Brook J. P. Severinghaus T. J. Fudge E. D. Keller W. T. Baisden R. C. A. Hindmarsh P. D. Neff T. Blunier R. Edwards P. A. Mayewski S. Kipfstuhl C. Buizert S. Canessa R. Dadic H. A. Kjær A. Kurbatov D. Zhang E. D. Waddington G. Baccolo T. Beers H. J. Brightley L. Carter D. Clemens-Sewall V. G. Ciobanu B. Delmonte L. Eling A. Ellis S. Ganesh N. R. Golledge S. Haines M. Handley R. L. Hawley |
author_facet |
N. A. N. Bertler H. Conway D. Dahl-Jensen D. B. Emanuelsson M. Winstrup P. T. Vallelonga J. E. Lee E. J. Brook J. P. Severinghaus T. J. Fudge E. D. Keller W. T. Baisden R. C. A. Hindmarsh P. D. Neff T. Blunier R. Edwards P. A. Mayewski S. Kipfstuhl C. Buizert S. Canessa R. Dadic H. A. Kjær A. Kurbatov D. Zhang E. D. Waddington G. Baccolo T. Beers H. J. Brightley L. Carter D. Clemens-Sewall V. G. Ciobanu B. Delmonte L. Eling A. Ellis S. Ganesh N. R. Golledge S. Haines M. Handley R. L. Hawley |
author_sort |
N. A. N. Bertler |
title |
The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years |
title_short |
The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years |
title_full |
The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years |
title_fullStr |
The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years |
title_full_unstemmed |
The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years |
title_sort |
ross sea dipole – temperature, snow accumulation and sea ice variability in the ross sea region, antarctica, over the past 2700 years |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-14-193-2018 https://doaj.org/article/f56c78664267465ebbeca6de5a2e1229 |
long_lat |
ENVELOPE(-162.000,-162.000,-79.283,-79.283) |
geographic |
Roosevelt Island Ross Sea West Antarctica |
geographic_facet |
Roosevelt Island Ross Sea West Antarctica |
genre |
Antarc* Antarctica ice core Roosevelt Island Ross Sea Sea ice West Antarctica |
genre_facet |
Antarc* Antarctica ice core Roosevelt Island Ross Sea Sea ice West Antarctica |
op_source |
Climate of the Past, Vol 14, Pp 193-214 (2018) |
op_relation |
https://www.clim-past.net/14/193/2018/cp-14-193-2018.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-14-193-2018 1814-9324 1814-9332 https://doaj.org/article/f56c78664267465ebbeca6de5a2e1229 |
op_doi |
https://doi.org/10.5194/cp-14-193-2018 |
container_title |
Climate of the Past |
container_volume |
14 |
container_issue |
2 |
container_start_page |
193 |
op_container_end_page |
214 |
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