Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models
Fram Strait, the deepest gateway to the Arctic Ocean, is strongly influenced by eddy dynamics. Here we analyse the output from two eddy-resolving models (ROMS – Regional Ocean Modeling System; FESOM – Finite-Element Sea-ice Ocean Model) with around 1 km mesh resolution in Fram Strait, with a focus o...
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Online Access: | https://hdl.handle.net/10037/20523 https://doi.org/10.5194/os-16-1225-2020 |
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ftunivtroemsoe:oai:munin.uit.no:10037/20523 2023-05-15T15:09:51+02:00 Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models Wekerle, Claudia Hattermann, Tore Wang, Qiang Crews, Laura von Appen, Wilken-Jon Danilov, Sergey 2020-10-23 https://hdl.handle.net/10037/20523 https://doi.org/10.5194/os-16-1225-2020 eng eng European Geosciences Union Ocean Science Wekerle, Hattermann, Wang, Crews, von Appen, Danilov. Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models. Ocean Science. 2020;16(5):1225-1246 FRIDAID 1849839 doi:10.5194/os-16-1225-2020 1812-0784 1812-0792 https://hdl.handle.net/10037/20523 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.5194/os-16-1225-2020 2021-06-25T17:57:55Z Fram Strait, the deepest gateway to the Arctic Ocean, is strongly influenced by eddy dynamics. Here we analyse the output from two eddy-resolving models (ROMS – Regional Ocean Modeling System; FESOM – Finite-Element Sea-ice Ocean Model) with around 1 km mesh resolution in Fram Strait, with a focus on their representation of eddy properties and dynamics. A comparison with mooring observations shows that both models reasonably simulate hydrography and eddy kinetic energy. Despite differences in model formulation, they show relatively similar eddy properties. The eddies have a mean radius of 4.9 and 5.6 km in ROMS and FESOM, respectively, with slightly more cyclones (ROMS: 54 %, FESOM: 55 %) than anticyclones. The mean lifetime of detected eddies is relatively short in both simulations (ROMS: 10 d, FESOM: 11 d), and the mean travel distance is 35 km in both models. More anticyclones are trapped in deep depressions or move toward deep locations. The two models show comparable spatial patterns of baroclinic and barotropic instability. ROMS has relatively stronger eddy intensity and baroclinic instability, possibly due to its smaller grid size, while FESOM has stronger eddy kinetic energy in the West Spitsbergen Current. Overall, the relatively good agreement between the two models strengthens our confidence in their ability to realistically represent the Fram Strait ocean dynamics and also highlights the need for very high mesh resolution. Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Sea ice Spitsbergen University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Ocean Science 16 5 1225 1246 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Wekerle, Claudia Hattermann, Tore Wang, Qiang Crews, Laura von Appen, Wilken-Jon Danilov, Sergey Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
description |
Fram Strait, the deepest gateway to the Arctic Ocean, is strongly influenced by eddy dynamics. Here we analyse the output from two eddy-resolving models (ROMS – Regional Ocean Modeling System; FESOM – Finite-Element Sea-ice Ocean Model) with around 1 km mesh resolution in Fram Strait, with a focus on their representation of eddy properties and dynamics. A comparison with mooring observations shows that both models reasonably simulate hydrography and eddy kinetic energy. Despite differences in model formulation, they show relatively similar eddy properties. The eddies have a mean radius of 4.9 and 5.6 km in ROMS and FESOM, respectively, with slightly more cyclones (ROMS: 54 %, FESOM: 55 %) than anticyclones. The mean lifetime of detected eddies is relatively short in both simulations (ROMS: 10 d, FESOM: 11 d), and the mean travel distance is 35 km in both models. More anticyclones are trapped in deep depressions or move toward deep locations. The two models show comparable spatial patterns of baroclinic and barotropic instability. ROMS has relatively stronger eddy intensity and baroclinic instability, possibly due to its smaller grid size, while FESOM has stronger eddy kinetic energy in the West Spitsbergen Current. Overall, the relatively good agreement between the two models strengthens our confidence in their ability to realistically represent the Fram Strait ocean dynamics and also highlights the need for very high mesh resolution. |
format |
Article in Journal/Newspaper |
author |
Wekerle, Claudia Hattermann, Tore Wang, Qiang Crews, Laura von Appen, Wilken-Jon Danilov, Sergey |
author_facet |
Wekerle, Claudia Hattermann, Tore Wang, Qiang Crews, Laura von Appen, Wilken-Jon Danilov, Sergey |
author_sort |
Wekerle, Claudia |
title |
Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models |
title_short |
Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models |
title_full |
Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models |
title_fullStr |
Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models |
title_full_unstemmed |
Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models |
title_sort |
properties and dynamics of mesoscale eddies in fram strait from a comparison between two high-resolution ocean-sea ice models |
publisher |
European Geosciences Union |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/20523 https://doi.org/10.5194/os-16-1225-2020 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Fram Strait Sea ice Spitsbergen |
genre_facet |
Arctic Arctic Ocean Fram Strait Sea ice Spitsbergen |
op_relation |
Ocean Science Wekerle, Hattermann, Wang, Crews, von Appen, Danilov. Properties and dynamics of mesoscale eddies in Fram Strait from a comparison between two high-resolution ocean-sea ice models. Ocean Science. 2020;16(5):1225-1246 FRIDAID 1849839 doi:10.5194/os-16-1225-2020 1812-0784 1812-0792 https://hdl.handle.net/10037/20523 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.5194/os-16-1225-2020 |
container_title |
Ocean Science |
container_volume |
16 |
container_issue |
5 |
container_start_page |
1225 |
op_container_end_page |
1246 |
_version_ |
1766340963635036160 |