Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation
Ocean currents along the Southeast Greenland Coast play an important role in the climate system. They carry dense water over the Denmark Strait sill, fresh water from the Arctic and the Greenland Ice Sheet into the subpolar ocean, and warm Atlantic water into Greenland’s fjords, where it can interac...
Published in: | Journal of Physical Oceanography |
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Language: | English |
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2021
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Online Access: | http://nora.nerc.ac.uk/id/eprint/529637/ https://nora.nerc.ac.uk/id/eprint/529637/7/%5B15200485%20-%20Journal%20of%20Physical%20Oceanography%5D%20Coastal%20Trapped%20Waves%20and%20Other%20Subinertial%20Variability%20along%20the%20Southeast%20Greenland%20Coast%20in%20a%20Realistic%20Numerical%20Simulation.pdf https://doi.org/10.1175/JPO-D-20-0239.1 |
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ftnerc:oai:nora.nerc.ac.uk:529637 2023-05-15T15:08:21+02:00 Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation Gelderloos, Renske Haine, Thomas W. N. Almansi, Mattia 2021-03-01 text http://nora.nerc.ac.uk/id/eprint/529637/ https://nora.nerc.ac.uk/id/eprint/529637/7/%5B15200485%20-%20Journal%20of%20Physical%20Oceanography%5D%20Coastal%20Trapped%20Waves%20and%20Other%20Subinertial%20Variability%20along%20the%20Southeast%20Greenland%20Coast%20in%20a%20Realistic%20Numerical%20Simulation.pdf https://doi.org/10.1175/JPO-D-20-0239.1 en eng https://nora.nerc.ac.uk/id/eprint/529637/7/%5B15200485%20-%20Journal%20of%20Physical%20Oceanography%5D%20Coastal%20Trapped%20Waves%20and%20Other%20Subinertial%20Variability%20along%20the%20Southeast%20Greenland%20Coast%20in%20a%20Realistic%20Numerical%20Simulation.pdf Gelderloos, Renske; Haine, Thomas W. N.; Almansi, Mattia orcid:0000-0001-6849-3647 . 2021 Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation. Journal of Physical Oceanography, 51 (3). 861-877. https://doi.org/10.1175/JPO-D-20-0239.1 <https://doi.org/10.1175/JPO-D-20-0239.1> Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1175/JPO-D-20-0239.1 2023-02-04T19:51:46Z Ocean currents along the Southeast Greenland Coast play an important role in the climate system. They carry dense water over the Denmark Strait sill, fresh water from the Arctic and the Greenland Ice Sheet into the subpolar ocean, and warm Atlantic water into Greenland’s fjords, where it can interact with outlet glaciers. Observational evidence from moorings shows that the circulation in this region displays substantial subinertial variability (typically with periods of several days). For the dense water flowing over the Denmark Strait sill, this variability augments the time-mean transport. It has been suggested that the subinertial variability found in observations is associated with Coastal Trapped Waves, whose properties depend on bathymetry, stratification, and the mean flow. Here, we use the output of a high-resolution realistic simulation to diagnose and characterize subinertial variability in sea surface height and velocity along the coast. The results show that the subinertial signals are coherent over hundreds of kilometers along the shelf. We find Coastal Trapped Waves on the shelf and along the shelf break in two subinertial frequency bands—at periods of 1–3 days and 5–18 days—that are consistent with a combination of Mode I waves and higher modes. Furthermore, we find that northeasterly barrier winds may trigger the 5–18 day shelf waves, whereas the 1–3 day variability is linked to high wind speeds over Sermilik Deep. Article in Journal/Newspaper Arctic Denmark Strait Greenland Ice Sheet Sermilik Natural Environment Research Council: NERC Open Research Archive Arctic Greenland Sermilik Deep ENVELOPE(-38.083,-38.083,64.667,64.667) Journal of Physical Oceanography 51 3 861 877 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Ocean currents along the Southeast Greenland Coast play an important role in the climate system. They carry dense water over the Denmark Strait sill, fresh water from the Arctic and the Greenland Ice Sheet into the subpolar ocean, and warm Atlantic water into Greenland’s fjords, where it can interact with outlet glaciers. Observational evidence from moorings shows that the circulation in this region displays substantial subinertial variability (typically with periods of several days). For the dense water flowing over the Denmark Strait sill, this variability augments the time-mean transport. It has been suggested that the subinertial variability found in observations is associated with Coastal Trapped Waves, whose properties depend on bathymetry, stratification, and the mean flow. Here, we use the output of a high-resolution realistic simulation to diagnose and characterize subinertial variability in sea surface height and velocity along the coast. The results show that the subinertial signals are coherent over hundreds of kilometers along the shelf. We find Coastal Trapped Waves on the shelf and along the shelf break in two subinertial frequency bands—at periods of 1–3 days and 5–18 days—that are consistent with a combination of Mode I waves and higher modes. Furthermore, we find that northeasterly barrier winds may trigger the 5–18 day shelf waves, whereas the 1–3 day variability is linked to high wind speeds over Sermilik Deep. |
format |
Article in Journal/Newspaper |
author |
Gelderloos, Renske Haine, Thomas W. N. Almansi, Mattia |
spellingShingle |
Gelderloos, Renske Haine, Thomas W. N. Almansi, Mattia Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation |
author_facet |
Gelderloos, Renske Haine, Thomas W. N. Almansi, Mattia |
author_sort |
Gelderloos, Renske |
title |
Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation |
title_short |
Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation |
title_full |
Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation |
title_fullStr |
Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation |
title_full_unstemmed |
Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation |
title_sort |
coastal trapped waves and other subinertial variability along the southeast greenland coast in a realistic numerical simulation |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/529637/ https://nora.nerc.ac.uk/id/eprint/529637/7/%5B15200485%20-%20Journal%20of%20Physical%20Oceanography%5D%20Coastal%20Trapped%20Waves%20and%20Other%20Subinertial%20Variability%20along%20the%20Southeast%20Greenland%20Coast%20in%20a%20Realistic%20Numerical%20Simulation.pdf https://doi.org/10.1175/JPO-D-20-0239.1 |
long_lat |
ENVELOPE(-38.083,-38.083,64.667,64.667) |
geographic |
Arctic Greenland Sermilik Deep |
geographic_facet |
Arctic Greenland Sermilik Deep |
genre |
Arctic Denmark Strait Greenland Ice Sheet Sermilik |
genre_facet |
Arctic Denmark Strait Greenland Ice Sheet Sermilik |
op_relation |
https://nora.nerc.ac.uk/id/eprint/529637/7/%5B15200485%20-%20Journal%20of%20Physical%20Oceanography%5D%20Coastal%20Trapped%20Waves%20and%20Other%20Subinertial%20Variability%20along%20the%20Southeast%20Greenland%20Coast%20in%20a%20Realistic%20Numerical%20Simulation.pdf Gelderloos, Renske; Haine, Thomas W. N.; Almansi, Mattia orcid:0000-0001-6849-3647 . 2021 Coastal trapped waves and other subinertial variability along the Southeast Greenland coast in a realistic numerical simulation. Journal of Physical Oceanography, 51 (3). 861-877. https://doi.org/10.1175/JPO-D-20-0239.1 <https://doi.org/10.1175/JPO-D-20-0239.1> |
op_doi |
https://doi.org/10.1175/JPO-D-20-0239.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
51 |
container_issue |
3 |
container_start_page |
861 |
op_container_end_page |
877 |
_version_ |
1766339721471983616 |