No Cover Image

Journal article 1237 views 138 downloads

The 2020 Larsen C Ice Shelf surface melt is a 40-year record high

Suzanne Bevan Orcid Logo, Adrian Luckman Orcid Logo, Harry Hendon, Guomin Wang

The Cryosphere, Volume: 14, Issue: 10, Pages: 3551 - 3564

Swansea University Authors: Suzanne Bevan Orcid Logo, Adrian Luckman Orcid Logo

  • tc-14-3551-2020.pdf

    PDF | Version of Record

    Released under the terms of a Creative Commons Attribution 4.0 License.

    Download (10.42MB)

Abstract

Along with record-breaking summer air temperatures at an Antarctic Peninsula meteorological station in February 2020, the Larsen C ice shelf experienced an exceptionally long and extensive 2019/2020 melt season. We use a 40-year time series of passive and scatterometer satellite microwave data, whic...

Full description

Published in: The Cryosphere
ISSN: 1994-0424
Published: Copernicus GmbH 2020
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa55459
Tags: Add Tag
No Tags, Be the first to tag this record!
first_indexed 2020-10-20T09:15:52Z
last_indexed 2023-03-10T04:02:47Z
id cronfa55459
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><datestamp>2023-03-09T13:28:12.4991607</datestamp><bib-version>v2</bib-version><id>55459</id><entry>2020-10-20</entry><title>The 2020 Larsen C Ice Shelf surface melt is a 40-year record high</title><swanseaauthors><author><sid>758d19253522c8c306d4eea0e6e484f6</sid><ORCID>0000-0003-2649-2982</ORCID><firstname>Suzanne</firstname><surname>Bevan</surname><name>Suzanne Bevan</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>008cb668b2671b653a88677f075799a9</sid><ORCID>0000-0002-9618-5905</ORCID><firstname>Adrian</firstname><surname>Luckman</surname><name>Adrian Luckman</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2020-10-20</date><deptcode>SGE</deptcode><abstract>Along with record-breaking summer air temperatures at an Antarctic Peninsula meteorological station in February 2020, the Larsen C ice shelf experienced an exceptionally long and extensive 2019/2020 melt season. We use a 40-year time series of passive and scatterometer satellite microwave data, which are sensitive to the presence of liquid water in the snow pack, to reveal that the extent and duration of melt observed on the ice shelf in the austral summer of 2019/2020 was the greatest on record. We find that unusual perturbations to Southern Hemisphere modes of atmospheric flow, including a persistently positive Indian Ocean Dipole in the spring and a very rare Southern Hemisphere sudden stratospheric warming in September 2019, preceded the exceptionally warm Antarctic Peninsula summer. It is likely that teleconnections between the tropics and southern high latitudes were able to bring sufficient heat via the atmosphere and ocean to the Antarctic Peninsula to drive the extreme Larsen C Ice Shelf melt. The record-breaking melt of 2019/2020 brought to an end the trend of decreasing melt that had begun in 1999/2000, will reinitiate earlier thinning of the ice shelf by depletion of the firn air content, and probably affected a much greater region than Larsen C Ice Shelf.</abstract><type>Journal Article</type><journal>The Cryosphere</journal><volume>14</volume><journalNumber>10</journalNumber><paginationStart>3551</paginationStart><paginationEnd>3564</paginationEnd><publisher>Copernicus GmbH</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint/><issnElectronic>1994-0424</issnElectronic><keywords/><publishedDay>27</publishedDay><publishedMonth>10</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-10-27</publishedDate><doi>10.5194/tc-14-3551-2020</doi><url/><notes/><college>COLLEGE NANME</college><department>Geography</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>SGE</DepartmentCode><institution>Swansea University</institution><apcterm>External research funder(s) paid the OA fee (includes OA grants disbursed by the Library)</apcterm><funders>This research has been supported by the Natural Environment Research Council (grant no. NE/L005409/1).</funders><projectreference/><lastEdited>2023-03-09T13:28:12.4991607</lastEdited><Created>2020-10-20T10:00:30.5716533</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Biosciences, Geography and Physics - Geography</level></path><authors><author><firstname>Suzanne</firstname><surname>Bevan</surname><orcid>0000-0003-2649-2982</orcid><order>1</order></author><author><firstname>Adrian</firstname><surname>Luckman</surname><orcid>0000-0002-9618-5905</orcid><order>2</order></author><author><firstname>Harry</firstname><surname>Hendon</surname><order>3</order></author><author><firstname>Guomin</firstname><surname>Wang</surname><order>4</order></author></authors><documents><document><filename>55459__18515__37dc699a0576437f8748ba1c2af2308b.pdf</filename><originalFilename>tc-14-3551-2020.pdf</originalFilename><uploaded>2020-10-28T07:54:57.8708753</uploaded><type>Output</type><contentLength>10929197</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>Released under the terms of a Creative Commons Attribution 4.0 License.</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>https://creativecommons.org/licenses/by/4.0/</licence></document></documents><OutputDurs><OutputDur><Id>29</Id><DataControllerName>Dr Suzanne Bevan</DataControllerName><DataControllerOrcid>0000-0003-2649-2982</DataControllerOrcid><DataControllerEmail>s.l.bevan@swansea.ac.uk</DataControllerEmail><IsDataAvailableOnline>true</IsDataAvailableOnline><DataNotAvailableOnlineReasonId xsi:nil="true"/><DurUrl>https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01014</DurUrl><IsDurRestrictions>false</IsDurRestrictions><DurRestrictionReasonId xsi:nil="true"/><DurEmbargoDate xsi:nil="true"/></OutputDur><OutputDur><Id>30</Id><DataControllerName>Suzanne Bevan</DataControllerName><DataControllerOrcid>0000-0003-2649-2982</DataControllerOrcid><DataControllerEmail>s.l.bevan@swansea.ac.uk</DataControllerEmail><IsDataAvailableOnline>true</IsDataAvailableOnline><DataNotAvailableOnlineReasonId xsi:nil="true"/><DurUrl>https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01318</DurUrl><IsDurRestrictions>false</IsDurRestrictions><DurRestrictionReasonId xsi:nil="true"/><DurEmbargoDate xsi:nil="true"/></OutputDur></OutputDurs></rfc1807>
spelling 2023-03-09T13:28:12.4991607 v2 55459 2020-10-20 The 2020 Larsen C Ice Shelf surface melt is a 40-year record high 758d19253522c8c306d4eea0e6e484f6 0000-0003-2649-2982 Suzanne Bevan Suzanne Bevan true false 008cb668b2671b653a88677f075799a9 0000-0002-9618-5905 Adrian Luckman Adrian Luckman true false 2020-10-20 SGE Along with record-breaking summer air temperatures at an Antarctic Peninsula meteorological station in February 2020, the Larsen C ice shelf experienced an exceptionally long and extensive 2019/2020 melt season. We use a 40-year time series of passive and scatterometer satellite microwave data, which are sensitive to the presence of liquid water in the snow pack, to reveal that the extent and duration of melt observed on the ice shelf in the austral summer of 2019/2020 was the greatest on record. We find that unusual perturbations to Southern Hemisphere modes of atmospheric flow, including a persistently positive Indian Ocean Dipole in the spring and a very rare Southern Hemisphere sudden stratospheric warming in September 2019, preceded the exceptionally warm Antarctic Peninsula summer. It is likely that teleconnections between the tropics and southern high latitudes were able to bring sufficient heat via the atmosphere and ocean to the Antarctic Peninsula to drive the extreme Larsen C Ice Shelf melt. The record-breaking melt of 2019/2020 brought to an end the trend of decreasing melt that had begun in 1999/2000, will reinitiate earlier thinning of the ice shelf by depletion of the firn air content, and probably affected a much greater region than Larsen C Ice Shelf. Journal Article The Cryosphere 14 10 3551 3564 Copernicus GmbH 1994-0424 27 10 2020 2020-10-27 10.5194/tc-14-3551-2020 COLLEGE NANME Geography COLLEGE CODE SGE Swansea University External research funder(s) paid the OA fee (includes OA grants disbursed by the Library) This research has been supported by the Natural Environment Research Council (grant no. NE/L005409/1). 2023-03-09T13:28:12.4991607 2020-10-20T10:00:30.5716533 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Suzanne Bevan 0000-0003-2649-2982 1 Adrian Luckman 0000-0002-9618-5905 2 Harry Hendon 3 Guomin Wang 4 55459__18515__37dc699a0576437f8748ba1c2af2308b.pdf tc-14-3551-2020.pdf 2020-10-28T07:54:57.8708753 Output 10929197 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution 4.0 License. true eng https://creativecommons.org/licenses/by/4.0/ 29 Dr Suzanne Bevan 0000-0003-2649-2982 s.l.bevan@swansea.ac.uk true https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01014 false 30 Suzanne Bevan 0000-0003-2649-2982 s.l.bevan@swansea.ac.uk true https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01318 false
title The 2020 Larsen C Ice Shelf surface melt is a 40-year record high
spellingShingle The 2020 Larsen C Ice Shelf surface melt is a 40-year record high
Suzanne Bevan
Adrian Luckman
title_short The 2020 Larsen C Ice Shelf surface melt is a 40-year record high
title_full The 2020 Larsen C Ice Shelf surface melt is a 40-year record high
title_fullStr The 2020 Larsen C Ice Shelf surface melt is a 40-year record high
title_full_unstemmed The 2020 Larsen C Ice Shelf surface melt is a 40-year record high
title_sort The 2020 Larsen C Ice Shelf surface melt is a 40-year record high
author_id_str_mv 758d19253522c8c306d4eea0e6e484f6
008cb668b2671b653a88677f075799a9
author_id_fullname_str_mv 758d19253522c8c306d4eea0e6e484f6_***_Suzanne Bevan
008cb668b2671b653a88677f075799a9_***_Adrian Luckman
author Suzanne Bevan
Adrian Luckman
author2 Suzanne Bevan
Adrian Luckman
Harry Hendon
Guomin Wang
format Journal article
container_title The Cryosphere
container_volume 14
container_issue 10
container_start_page 3551
publishDate 2020
institution Swansea University
issn 1994-0424
doi_str_mv 10.5194/tc-14-3551-2020
publisher Copernicus GmbH
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
document_store_str 1
active_str 0
description Along with record-breaking summer air temperatures at an Antarctic Peninsula meteorological station in February 2020, the Larsen C ice shelf experienced an exceptionally long and extensive 2019/2020 melt season. We use a 40-year time series of passive and scatterometer satellite microwave data, which are sensitive to the presence of liquid water in the snow pack, to reveal that the extent and duration of melt observed on the ice shelf in the austral summer of 2019/2020 was the greatest on record. We find that unusual perturbations to Southern Hemisphere modes of atmospheric flow, including a persistently positive Indian Ocean Dipole in the spring and a very rare Southern Hemisphere sudden stratospheric warming in September 2019, preceded the exceptionally warm Antarctic Peninsula summer. It is likely that teleconnections between the tropics and southern high latitudes were able to bring sufficient heat via the atmosphere and ocean to the Antarctic Peninsula to drive the extreme Larsen C Ice Shelf melt. The record-breaking melt of 2019/2020 brought to an end the trend of decreasing melt that had begun in 1999/2000, will reinitiate earlier thinning of the ice shelf by depletion of the firn air content, and probably affected a much greater region than Larsen C Ice Shelf.
published_date 2020-10-27T04:09:40Z
_version_ 1763753675683004416
score 11.030296