The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years
Abstract. 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 Ev...
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ftcdlib:oai:escholarship.org:ark:/13030/qt8fr6v8vb 2023-11-05T03:36:57+01:00 The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years Bertler, Nancy AN Conway, Howard Dahl-Jensen, Dorthe Emanuelsson, Daniel B Winstrup, Mai Vallelonga, Paul T Lee, James E Brook, Ed J Severinghaus, Jeffrey P Fudge, Taylor J Keller, Elizabeth D Baisden, W Troy Hindmarsh, Richard CA Neff, Peter D Blunier, Thomas Edwards, Ross Mayewski, Paul A Kipfstuhl, Sepp Buizert, Christo Canessa, Silvia Dadic, Ruzica Kjær, Helle A Kurbatov, Andrei Zhang, Dongqi Waddington, Edwin D Baccolo, Giovanni Beers, Thomas Brightley, Hannah J Carter, Lionel Clemens-Sewall, David Ciobanu, Viorela G Delmonte, Barbara Eling, Lukas Ellis, Aja Ganesh, Shruthi Golledge, Nicholas R Haines, Skylar Handley, Michael Hawley, Robert L Hogan, Chad M Johnson, Katelyn M Korotkikh, Elena Lowry, Daniel P Mandeno, Darcy McKay, Robert M Menking, James A Naish, Timothy R Noerling, Caroline Ollive, Agathe Orsi, Anaïs Proemse, Bernadette C Pyne, Alexander R Pyne, Rebecca L Renwick, James Scherer, Reed P Semper, Stefanie Simonsen, Marius Sneed, Sharon B Steig, Eric J Tuohy, Andrea Venugopal, Abhijith Ulayottil Valero-Delgado, Fernando Venkatesh, Janani Wang, Feitang Wang, Shimeng Winski, Dominic A Winton, V Holly L Whiteford, Arran Xiao, Cunde Yang, Jiao Zhang, Xin 193 - 214 2018-01-01 application/pdf https://escholarship.org/uc/item/8fr6v8vb unknown eScholarship, University of California qt8fr6v8vb https://escholarship.org/uc/item/8fr6v8vb public Climate of the Past, vol 14, iss 2 Earth Sciences Physical Geography and Environmental Geoscience Geology Climate Action Paleontology Climate change science article 2018 ftcdlib 2023-10-09T18:08:22Z Abstract. 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 University of California: eScholarship |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Earth Sciences Physical Geography and Environmental Geoscience Geology Climate Action Paleontology Climate change science |
spellingShingle |
Earth Sciences Physical Geography and Environmental Geoscience Geology Climate Action Paleontology Climate change science Bertler, Nancy AN Conway, Howard Dahl-Jensen, Dorthe Emanuelsson, Daniel B Winstrup, Mai Vallelonga, Paul T Lee, James E Brook, Ed J Severinghaus, Jeffrey P Fudge, Taylor J Keller, Elizabeth D Baisden, W Troy Hindmarsh, Richard CA Neff, Peter D Blunier, Thomas Edwards, Ross Mayewski, Paul A Kipfstuhl, Sepp Buizert, Christo Canessa, Silvia Dadic, Ruzica Kjær, Helle A Kurbatov, Andrei Zhang, Dongqi Waddington, Edwin D Baccolo, Giovanni Beers, Thomas Brightley, Hannah J Carter, Lionel Clemens-Sewall, David Ciobanu, Viorela G Delmonte, Barbara Eling, Lukas Ellis, Aja Ganesh, Shruthi Golledge, Nicholas R Haines, Skylar Handley, Michael Hawley, Robert L Hogan, Chad M Johnson, Katelyn M Korotkikh, Elena Lowry, Daniel P Mandeno, Darcy McKay, Robert M Menking, James A Naish, Timothy R Noerling, Caroline Ollive, Agathe Orsi, Anaïs Proemse, Bernadette C Pyne, Alexander R Pyne, Rebecca L Renwick, James Scherer, Reed P Semper, Stefanie Simonsen, Marius Sneed, Sharon B Steig, Eric J Tuohy, Andrea Venugopal, Abhijith Ulayottil Valero-Delgado, Fernando Venkatesh, Janani Wang, Feitang Wang, Shimeng Winski, Dominic A Winton, V Holly L Whiteford, Arran Xiao, Cunde Yang, Jiao Zhang, Xin The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Geology Climate Action Paleontology Climate change science |
description |
Abstract. 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 |
Bertler, Nancy AN Conway, Howard Dahl-Jensen, Dorthe Emanuelsson, Daniel B Winstrup, Mai Vallelonga, Paul T Lee, James E Brook, Ed J Severinghaus, Jeffrey P Fudge, Taylor J Keller, Elizabeth D Baisden, W Troy Hindmarsh, Richard CA Neff, Peter D Blunier, Thomas Edwards, Ross Mayewski, Paul A Kipfstuhl, Sepp Buizert, Christo Canessa, Silvia Dadic, Ruzica Kjær, Helle A Kurbatov, Andrei Zhang, Dongqi Waddington, Edwin D Baccolo, Giovanni Beers, Thomas Brightley, Hannah J Carter, Lionel Clemens-Sewall, David Ciobanu, Viorela G Delmonte, Barbara Eling, Lukas Ellis, Aja Ganesh, Shruthi Golledge, Nicholas R Haines, Skylar Handley, Michael Hawley, Robert L Hogan, Chad M Johnson, Katelyn M Korotkikh, Elena Lowry, Daniel P Mandeno, Darcy McKay, Robert M Menking, James A Naish, Timothy R Noerling, Caroline Ollive, Agathe Orsi, Anaïs Proemse, Bernadette C Pyne, Alexander R Pyne, Rebecca L Renwick, James Scherer, Reed P Semper, Stefanie Simonsen, Marius Sneed, Sharon B Steig, Eric J Tuohy, Andrea Venugopal, Abhijith Ulayottil Valero-Delgado, Fernando Venkatesh, Janani Wang, Feitang Wang, Shimeng Winski, Dominic A Winton, V Holly L Whiteford, Arran Xiao, Cunde Yang, Jiao Zhang, Xin |
author_facet |
Bertler, Nancy AN Conway, Howard Dahl-Jensen, Dorthe Emanuelsson, Daniel B Winstrup, Mai Vallelonga, Paul T Lee, James E Brook, Ed J Severinghaus, Jeffrey P Fudge, Taylor J Keller, Elizabeth D Baisden, W Troy Hindmarsh, Richard CA Neff, Peter D Blunier, Thomas Edwards, Ross Mayewski, Paul A Kipfstuhl, Sepp Buizert, Christo Canessa, Silvia Dadic, Ruzica Kjær, Helle A Kurbatov, Andrei Zhang, Dongqi Waddington, Edwin D Baccolo, Giovanni Beers, Thomas Brightley, Hannah J Carter, Lionel Clemens-Sewall, David Ciobanu, Viorela G Delmonte, Barbara Eling, Lukas Ellis, Aja Ganesh, Shruthi Golledge, Nicholas R Haines, Skylar Handley, Michael Hawley, Robert L Hogan, Chad M Johnson, Katelyn M Korotkikh, Elena Lowry, Daniel P Mandeno, Darcy McKay, Robert M Menking, James A Naish, Timothy R Noerling, Caroline Ollive, Agathe Orsi, Anaïs Proemse, Bernadette C Pyne, Alexander R Pyne, Rebecca L Renwick, James Scherer, Reed P Semper, Stefanie Simonsen, Marius Sneed, Sharon B Steig, Eric J Tuohy, Andrea Venugopal, Abhijith Ulayottil Valero-Delgado, Fernando Venkatesh, Janani Wang, Feitang Wang, Shimeng Winski, Dominic A Winton, V Holly L Whiteford, Arran Xiao, Cunde Yang, Jiao Zhang, Xin |
author_sort |
Bertler, Nancy AN |
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 |
eScholarship, University of California |
publishDate |
2018 |
url |
https://escholarship.org/uc/item/8fr6v8vb |
op_coverage |
193 - 214 |
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, iss 2 |
op_relation |
qt8fr6v8vb https://escholarship.org/uc/item/8fr6v8vb |
op_rights |
public |
_version_ |
1781692262768443392 |