Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet
Acceleration of the Greenland Ice Sheet (GrIS) tidewater outlet glaciers has increased the ice sheet's contribution to global sea level rise over the last two decades. Coincident increases in atmospheric temperatures around Greenland explain some of the increased ice loss, but warm Atlantic-ori...
Published in: | Journal of Geophysical Research: Oceans |
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2014
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Online Access: | https://pure.uhi.ac.uk/en/publications/0f4981be-bb07-4acd-9259-14491963bd77 https://doi.org/10.1002/2013JC009295 https://pureadmin.uhi.ac.uk/ws/files/2429148/Inall_et_al_2014_Journal_of_Geophysical_Research_Oceans.pdf |
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ftuhipublicatio:oai:pure.atira.dk:publications/0f4981be-bb07-4acd-9259-14491963bd77 2024-06-23T07:52:26+00:00 Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet Inall, Mark Murray, Tavi Cottier, Finlo Scharrer, Kilian Boyd, Tim Heywood, K J Bevan, Suzanne 2014-02-04 application/pdf https://pure.uhi.ac.uk/en/publications/0f4981be-bb07-4acd-9259-14491963bd77 https://doi.org/10.1002/2013JC009295 https://pureadmin.uhi.ac.uk/ws/files/2429148/Inall_et_al_2014_Journal_of_Geophysical_Research_Oceans.pdf eng eng https://pure.uhi.ac.uk/en/publications/0f4981be-bb07-4acd-9259-14491963bd77 info:eu-repo/semantics/openAccess Inall , M , Murray , T , Cottier , F , Scharrer , K , Boyd , T , Heywood , K J & Bevan , S 2014 , ' Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet ' , Journal of Geophysical Research-Oceans , vol. 119 , no. 2 , pp. 631–645 . https://doi.org/10.1002/2013JC009295 7ref2021 article 2014 ftuhipublicatio https://doi.org/10.1002/2013JC009295 2024-06-10T23:47:56Z Acceleration of the Greenland Ice Sheet (GrIS) tidewater outlet glaciers has increased the ice sheet's contribution to global sea level rise over the last two decades. Coincident increases in atmospheric temperatures around Greenland explain some of the increased ice loss, but warm Atlantic-origin water (AW) is increasingly recognized as contributing to the accelerating ice-mass loss, particularly, via the outlet glaciers of south-east (SE) Greenland. However, there remains a lack of understanding of the variability in heat content of the water masses found to the east of Greenland and how this heat is communicated to the outlet glaciers of the GrIS. Here a new analysis is presented of ocean/GrIS interaction in which the oceanic heat flux toward the ice sheet in Kangerdlugssuaq Fjord (0.26 TW) is an order-of-magnitude greater than that reported for the other major outlet glacier of SE Greenland (Helheim). Heat delivered by AW to the calving front of Kangerdlugssuaq is equivalent to 10 m d21 melt (i.e., 30¿60% of the ice flow speed), and thus is highly significant. During the observational campaign in September 2010 warm Polar Surface Water (PSWw) melted a substantial volume of ice within the fjord; equivalent to 25% of the volume melted by AW alone. Satellite-derived sea surface temperatures show large interannual variability in PSWw over the 20 year period 1991¿2011. Anomalously warm PSWw was observed within the fjord prior to the welldocumented major ice front retreats of May 2004 and November 2010. Article in Journal/Newspaper East Greenland glacier Greenland Ice Sheet Tidewater University of the Highlands and Islands: Research Database of UHI Greenland Journal of Geophysical Research: Oceans 119 2 631 645 |
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Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
7ref2021 |
spellingShingle |
7ref2021 Inall, Mark Murray, Tavi Cottier, Finlo Scharrer, Kilian Boyd, Tim Heywood, K J Bevan, Suzanne Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet |
topic_facet |
7ref2021 |
description |
Acceleration of the Greenland Ice Sheet (GrIS) tidewater outlet glaciers has increased the ice sheet's contribution to global sea level rise over the last two decades. Coincident increases in atmospheric temperatures around Greenland explain some of the increased ice loss, but warm Atlantic-origin water (AW) is increasingly recognized as contributing to the accelerating ice-mass loss, particularly, via the outlet glaciers of south-east (SE) Greenland. However, there remains a lack of understanding of the variability in heat content of the water masses found to the east of Greenland and how this heat is communicated to the outlet glaciers of the GrIS. Here a new analysis is presented of ocean/GrIS interaction in which the oceanic heat flux toward the ice sheet in Kangerdlugssuaq Fjord (0.26 TW) is an order-of-magnitude greater than that reported for the other major outlet glacier of SE Greenland (Helheim). Heat delivered by AW to the calving front of Kangerdlugssuaq is equivalent to 10 m d21 melt (i.e., 30¿60% of the ice flow speed), and thus is highly significant. During the observational campaign in September 2010 warm Polar Surface Water (PSWw) melted a substantial volume of ice within the fjord; equivalent to 25% of the volume melted by AW alone. Satellite-derived sea surface temperatures show large interannual variability in PSWw over the 20 year period 1991¿2011. Anomalously warm PSWw was observed within the fjord prior to the welldocumented major ice front retreats of May 2004 and November 2010. |
format |
Article in Journal/Newspaper |
author |
Inall, Mark Murray, Tavi Cottier, Finlo Scharrer, Kilian Boyd, Tim Heywood, K J Bevan, Suzanne |
author_facet |
Inall, Mark Murray, Tavi Cottier, Finlo Scharrer, Kilian Boyd, Tim Heywood, K J Bevan, Suzanne |
author_sort |
Inall, Mark |
title |
Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet |
title_short |
Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet |
title_full |
Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet |
title_fullStr |
Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet |
title_full_unstemmed |
Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet |
title_sort |
oceanic heat delivery via kangerdlugssuaq fjord to the south-east greenland ice sheet |
publishDate |
2014 |
url |
https://pure.uhi.ac.uk/en/publications/0f4981be-bb07-4acd-9259-14491963bd77 https://doi.org/10.1002/2013JC009295 https://pureadmin.uhi.ac.uk/ws/files/2429148/Inall_et_al_2014_Journal_of_Geophysical_Research_Oceans.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland glacier Greenland Ice Sheet Tidewater |
genre_facet |
East Greenland glacier Greenland Ice Sheet Tidewater |
op_source |
Inall , M , Murray , T , Cottier , F , Scharrer , K , Boyd , T , Heywood , K J & Bevan , S 2014 , ' Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet ' , Journal of Geophysical Research-Oceans , vol. 119 , no. 2 , pp. 631–645 . https://doi.org/10.1002/2013JC009295 |
op_relation |
https://pure.uhi.ac.uk/en/publications/0f4981be-bb07-4acd-9259-14491963bd77 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2013JC009295 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
2 |
container_start_page |
631 |
op_container_end_page |
645 |
_version_ |
1802643742322065408 |