Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength
Funding: T.A.S., T.S., C.W., M.T., A.M., K.E.A., S.W.T., and E.P. thank the support from National Science Foundation (NSF) Grant 1929991. T.S.D., K.J.H., R.A.H., and A.K.W. thank the support from Natural Environment Research Council (NERC) Grant NE/S006419/1. L.B. and G.A.B. thank support from NERC...
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Online Access: | https://hdl.handle.net/10023/26648 https://doi.org/10.1038/s41467-022-35499-5 https://doi.org/10.21203/rs.3.rs-1466534/v1 |
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/26648 2024-04-21T07:48:52+00:00 Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength Dotto, Tiago S. Heywood, Karen J. Hall, Rob A. Scambos, Ted A. Zheng, Yixi Nakayama, Yoshihiro Hyogo, Shuntaro Snow, Tasha Wahlin, Anna K. Wild, Christian Truffer, Martin Muto, Atsuhiro Alley, Karen E. Boehme, Lars Bortolotto, Guilherme A. Tyler, Scott W. Pettit, Erin NERC University of St Andrews. School of Biology University of St Andrews. Sea Mammal Research Unit University of St Andrews. Scottish Oceans Institute University of St Andrews. Marine Alliance for Science & Technology Scotland 2022-12-22T12:30:02Z 13 5562988 application/pdf https://hdl.handle.net/10023/26648 https://doi.org/10.1038/s41467-022-35499-5 https://doi.org/10.21203/rs.3.rs-1466534/v1 eng eng Nature Communications 278412190 ffca1fe4-69da-42f8-a8ca-c865d56bacfc 85144543803 Dotto , T S , Heywood , K J , Hall , R A , Scambos , T A , Zheng , Y , Nakayama , Y , Hyogo , S , Snow , T , Wahlin , A K , Wild , C , Truffer , M , Muto , A , Alley , K E , Boehme , L , Bortolotto , G A , Tyler , S W & Pettit , E 2022 , ' Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength ' , Nature Communications , vol. 13 , 7840 . https://doi.org/10.1038/s41467-022-35499-5 2041-1723 ORCID: /0000-0002-5343-6575/work/125303271 https://hdl.handle.net/10023/26648 doi:10.1038/s41467-022-35499-5 https://doi.org/10.21203/rs.3.rs-1466534/v1 NE/S006591/1 GB Physical geography GC Oceanography DAS SDG 14 - Life Below Water MCC GB GC Journal article 2022 ftstandrewserep https://doi.org/10.1038/s41467-022-35499-510.21203/rs.3.rs-1466534/v1 2024-03-27T15:07:39Z Funding: T.A.S., T.S., C.W., M.T., A.M., K.E.A., S.W.T., and E.P. thank the support from National Science Foundation (NSF) Grant 1929991. T.S.D., K.J.H., R.A.H., and A.K.W. thank the support from Natural Environment Research Council (NERC) Grant NE/S006419/1. L.B. and G.A.B. thank support from NERC Grant NE/S006591/1. Y.Z. acknowledges support from the China Scholarship Council, the University of East Anglia, and the European Research Council (under H2020-EU.1.1.; Grant 741120). Y.N. received support from the Grants-in-Aid for Scientific Research (19K23447, 21K13989) of the Japanese Ministry of Education, Culture, Sports, Science, and Technology. S.H. was supported by JST, the establishment of university fellowships towards the creation of science and technology innovation (Grant JPMJFS2101). Logistics were provided by NSF-U.S. Antarctic Program and NERC-British Antarctic Survey. ITGC Contribution No. ITGC-062. West Antarctic ice-shelf thinning is primarily caused by ocean-driven basal melting. Here we assess ocean variability below Thwaites Eastern Ice Shelf (TEIS) and reveal the importance of local ocean circulation and sea-ice. Measurements obtained from two sub-ice-shelf moorings, spanning January 2020 to March 2021, show warming of the ice-shelf cavity and an increase in meltwater fraction of the upper sub-ice layer. Combined with ocean modelling results, our observations suggest that meltwater from Pine Island Ice Shelf feeds into the TEIS cavity, adding to horizontal heat transport there. We propose that a weakening of the Pine Island Bay gyre caused by prolonged sea-ice cover from April 2020 to March 2021 allowed meltwater-enriched waters to enter the TEIS cavity, which increased the temperature of the upper layer. Our study highlights the sensitivity of ocean circulation beneath ice shelves to local atmosphere-sea-ice-ocean forcing in neighbouring open oceans. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic British Antarctic Survey Ice Shelf Ice Shelves Pine Island Bay Sea ice University of St Andrews: Digital Research Repository Nature Communications 13 1 |
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Open Polar |
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University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
GB Physical geography GC Oceanography DAS SDG 14 - Life Below Water MCC GB GC |
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GB Physical geography GC Oceanography DAS SDG 14 - Life Below Water MCC GB GC Dotto, Tiago S. Heywood, Karen J. Hall, Rob A. Scambos, Ted A. Zheng, Yixi Nakayama, Yoshihiro Hyogo, Shuntaro Snow, Tasha Wahlin, Anna K. Wild, Christian Truffer, Martin Muto, Atsuhiro Alley, Karen E. Boehme, Lars Bortolotto, Guilherme A. Tyler, Scott W. Pettit, Erin Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength |
topic_facet |
GB Physical geography GC Oceanography DAS SDG 14 - Life Below Water MCC GB GC |
description |
Funding: T.A.S., T.S., C.W., M.T., A.M., K.E.A., S.W.T., and E.P. thank the support from National Science Foundation (NSF) Grant 1929991. T.S.D., K.J.H., R.A.H., and A.K.W. thank the support from Natural Environment Research Council (NERC) Grant NE/S006419/1. L.B. and G.A.B. thank support from NERC Grant NE/S006591/1. Y.Z. acknowledges support from the China Scholarship Council, the University of East Anglia, and the European Research Council (under H2020-EU.1.1.; Grant 741120). Y.N. received support from the Grants-in-Aid for Scientific Research (19K23447, 21K13989) of the Japanese Ministry of Education, Culture, Sports, Science, and Technology. S.H. was supported by JST, the establishment of university fellowships towards the creation of science and technology innovation (Grant JPMJFS2101). Logistics were provided by NSF-U.S. Antarctic Program and NERC-British Antarctic Survey. ITGC Contribution No. ITGC-062. West Antarctic ice-shelf thinning is primarily caused by ocean-driven basal melting. Here we assess ocean variability below Thwaites Eastern Ice Shelf (TEIS) and reveal the importance of local ocean circulation and sea-ice. Measurements obtained from two sub-ice-shelf moorings, spanning January 2020 to March 2021, show warming of the ice-shelf cavity and an increase in meltwater fraction of the upper sub-ice layer. Combined with ocean modelling results, our observations suggest that meltwater from Pine Island Ice Shelf feeds into the TEIS cavity, adding to horizontal heat transport there. We propose that a weakening of the Pine Island Bay gyre caused by prolonged sea-ice cover from April 2020 to March 2021 allowed meltwater-enriched waters to enter the TEIS cavity, which increased the temperature of the upper layer. Our study highlights the sensitivity of ocean circulation beneath ice shelves to local atmosphere-sea-ice-ocean forcing in neighbouring open oceans. Peer reviewed |
author2 |
NERC University of St Andrews. School of Biology University of St Andrews. Sea Mammal Research Unit University of St Andrews. Scottish Oceans Institute University of St Andrews. Marine Alliance for Science & Technology Scotland |
format |
Article in Journal/Newspaper |
author |
Dotto, Tiago S. Heywood, Karen J. Hall, Rob A. Scambos, Ted A. Zheng, Yixi Nakayama, Yoshihiro Hyogo, Shuntaro Snow, Tasha Wahlin, Anna K. Wild, Christian Truffer, Martin Muto, Atsuhiro Alley, Karen E. Boehme, Lars Bortolotto, Guilherme A. Tyler, Scott W. Pettit, Erin |
author_facet |
Dotto, Tiago S. Heywood, Karen J. Hall, Rob A. Scambos, Ted A. Zheng, Yixi Nakayama, Yoshihiro Hyogo, Shuntaro Snow, Tasha Wahlin, Anna K. Wild, Christian Truffer, Martin Muto, Atsuhiro Alley, Karen E. Boehme, Lars Bortolotto, Guilherme A. Tyler, Scott W. Pettit, Erin |
author_sort |
Dotto, Tiago S. |
title |
Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength |
title_short |
Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength |
title_full |
Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength |
title_fullStr |
Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength |
title_full_unstemmed |
Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength |
title_sort |
ocean variability beneath thwaites eastern ice shelf driven by the pine island bay gyre strength |
publishDate |
2022 |
url |
https://hdl.handle.net/10023/26648 https://doi.org/10.1038/s41467-022-35499-5 https://doi.org/10.21203/rs.3.rs-1466534/v1 |
genre |
Antarc* Antarctic British Antarctic Survey Ice Shelf Ice Shelves Pine Island Bay Sea ice |
genre_facet |
Antarc* Antarctic British Antarctic Survey Ice Shelf Ice Shelves Pine Island Bay Sea ice |
op_relation |
Nature Communications 278412190 ffca1fe4-69da-42f8-a8ca-c865d56bacfc 85144543803 Dotto , T S , Heywood , K J , Hall , R A , Scambos , T A , Zheng , Y , Nakayama , Y , Hyogo , S , Snow , T , Wahlin , A K , Wild , C , Truffer , M , Muto , A , Alley , K E , Boehme , L , Bortolotto , G A , Tyler , S W & Pettit , E 2022 , ' Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength ' , Nature Communications , vol. 13 , 7840 . https://doi.org/10.1038/s41467-022-35499-5 2041-1723 ORCID: /0000-0002-5343-6575/work/125303271 https://hdl.handle.net/10023/26648 doi:10.1038/s41467-022-35499-5 https://doi.org/10.21203/rs.3.rs-1466534/v1 NE/S006591/1 |
op_doi |
https://doi.org/10.1038/s41467-022-35499-510.21203/rs.3.rs-1466534/v1 |
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Nature Communications |
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13 |
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