Annual Cycle of Turbulent Dissipation Estimated from Seagliders
The rate of dissipation of turbulent kinetic energy is estimated using Seaglider observations of vertical water velocity in the midlatitude North Atlantic. This estimate is based on the large-eddy method, allowing the use of measurements of turbulent energy at large scales O(1–10 m) to diagnose the...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://pure.uhi.ac.uk/en/publications/2cc84467-5f4d-4607-86d7-2afc256e516d https://doi.org/10.1029/2018GL079966 https://pureadmin.uhi.ac.uk/ws/files/3658961/Evans_et_al_2018_Geophysical_Research_Letters.pdf http://www.scopus.com/inward/record.url?scp=85054722565&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85054722565&partnerID=8YFLogxK |
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ftuhipublicatio:oai:pure.atira.dk:publications/2cc84467-5f4d-4607-86d7-2afc256e516d 2024-04-28T08:30:40+00:00 Annual Cycle of Turbulent Dissipation Estimated from Seagliders Evans, Dafydd Gwyn Lucas, Natasha Sarah Hemsley, Victoria Frajka-Williams, Eleanor Naveira Garabato, Alberto C. Martin, Adrian Painter, Stuart C. Inall, Mark E. Palmer, Matthew R. 2018-10-10 application/pdf https://pure.uhi.ac.uk/en/publications/2cc84467-5f4d-4607-86d7-2afc256e516d https://doi.org/10.1029/2018GL079966 https://pureadmin.uhi.ac.uk/ws/files/3658961/Evans_et_al_2018_Geophysical_Research_Letters.pdf http://www.scopus.com/inward/record.url?scp=85054722565&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85054722565&partnerID=8YFLogxK eng eng https://pure.uhi.ac.uk/en/publications/2cc84467-5f4d-4607-86d7-2afc256e516d info:eu-repo/semantics/openAccess Evans , D G , Lucas , N S , Hemsley , V , Frajka-Williams , E , Naveira Garabato , A C , Martin , A , Painter , S C , Inall , M E & Palmer , M R 2018 , ' Annual Cycle of Turbulent Dissipation Estimated from Seagliders ' , Geophysical Research Letters , vol. 45 , no. 19 , pp. 10,560-10,569 . https://doi.org/10.1029/2018GL079966 Buoyancy driven turbulence Law of the wall Ocean mixed layer Seaglider Turbulence Wind driven mixing article 2018 ftuhipublicatio https://doi.org/10.1029/2018GL079966 2024-04-11T00:05:55Z The rate of dissipation of turbulent kinetic energy is estimated using Seaglider observations of vertical water velocity in the midlatitude North Atlantic. This estimate is based on the large-eddy method, allowing the use of measurements of turbulent energy at large scales O(1–10 m) to diagnose the rate of energy dissipated through viscous processes at scales O(1 mm). The Seaglider data considered here were obtained in a region of high stratification (1 × 10 −4 <N < 1×10 −2 s −1 ), where previous implementations of this method fail. The large-eddy method is generalized to high-stratification by high-pass filtering vertical velocity with a cutoff dependent on the local buoyancy frequency, producing a year-long time series of dissipation rate spanning the uppermost 1,000 m with subdaily resolution. This is compared to the dissipation rate estimated from a moored 600 kHz acoustic Doppler current profiler. The variability of the Seaglider-based dissipation correlates with one-dimensional scalings of wind- and buoyancy-driven mixed-layer turbulence. Article in Journal/Newspaper North Atlantic University of the Highlands and Islands: Research Database of UHI Geophysical Research Letters 45 19 10,560 10,569 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Buoyancy driven turbulence Law of the wall Ocean mixed layer Seaglider Turbulence Wind driven mixing |
spellingShingle |
Buoyancy driven turbulence Law of the wall Ocean mixed layer Seaglider Turbulence Wind driven mixing Evans, Dafydd Gwyn Lucas, Natasha Sarah Hemsley, Victoria Frajka-Williams, Eleanor Naveira Garabato, Alberto C. Martin, Adrian Painter, Stuart C. Inall, Mark E. Palmer, Matthew R. Annual Cycle of Turbulent Dissipation Estimated from Seagliders |
topic_facet |
Buoyancy driven turbulence Law of the wall Ocean mixed layer Seaglider Turbulence Wind driven mixing |
description |
The rate of dissipation of turbulent kinetic energy is estimated using Seaglider observations of vertical water velocity in the midlatitude North Atlantic. This estimate is based on the large-eddy method, allowing the use of measurements of turbulent energy at large scales O(1–10 m) to diagnose the rate of energy dissipated through viscous processes at scales O(1 mm). The Seaglider data considered here were obtained in a region of high stratification (1 × 10 −4 <N < 1×10 −2 s −1 ), where previous implementations of this method fail. The large-eddy method is generalized to high-stratification by high-pass filtering vertical velocity with a cutoff dependent on the local buoyancy frequency, producing a year-long time series of dissipation rate spanning the uppermost 1,000 m with subdaily resolution. This is compared to the dissipation rate estimated from a moored 600 kHz acoustic Doppler current profiler. The variability of the Seaglider-based dissipation correlates with one-dimensional scalings of wind- and buoyancy-driven mixed-layer turbulence. |
format |
Article in Journal/Newspaper |
author |
Evans, Dafydd Gwyn Lucas, Natasha Sarah Hemsley, Victoria Frajka-Williams, Eleanor Naveira Garabato, Alberto C. Martin, Adrian Painter, Stuart C. Inall, Mark E. Palmer, Matthew R. |
author_facet |
Evans, Dafydd Gwyn Lucas, Natasha Sarah Hemsley, Victoria Frajka-Williams, Eleanor Naveira Garabato, Alberto C. Martin, Adrian Painter, Stuart C. Inall, Mark E. Palmer, Matthew R. |
author_sort |
Evans, Dafydd Gwyn |
title |
Annual Cycle of Turbulent Dissipation Estimated from Seagliders |
title_short |
Annual Cycle of Turbulent Dissipation Estimated from Seagliders |
title_full |
Annual Cycle of Turbulent Dissipation Estimated from Seagliders |
title_fullStr |
Annual Cycle of Turbulent Dissipation Estimated from Seagliders |
title_full_unstemmed |
Annual Cycle of Turbulent Dissipation Estimated from Seagliders |
title_sort |
annual cycle of turbulent dissipation estimated from seagliders |
publishDate |
2018 |
url |
https://pure.uhi.ac.uk/en/publications/2cc84467-5f4d-4607-86d7-2afc256e516d https://doi.org/10.1029/2018GL079966 https://pureadmin.uhi.ac.uk/ws/files/3658961/Evans_et_al_2018_Geophysical_Research_Letters.pdf http://www.scopus.com/inward/record.url?scp=85054722565&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85054722565&partnerID=8YFLogxK |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Evans , D G , Lucas , N S , Hemsley , V , Frajka-Williams , E , Naveira Garabato , A C , Martin , A , Painter , S C , Inall , M E & Palmer , M R 2018 , ' Annual Cycle of Turbulent Dissipation Estimated from Seagliders ' , Geophysical Research Letters , vol. 45 , no. 19 , pp. 10,560-10,569 . https://doi.org/10.1029/2018GL079966 |
op_relation |
https://pure.uhi.ac.uk/en/publications/2cc84467-5f4d-4607-86d7-2afc256e516d |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2018GL079966 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
19 |
container_start_page |
10,560 |
op_container_end_page |
10,569 |
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1797588458038886400 |