Improvements on the upper-ocean simulation from 2007 to 2018 in the Canada Basin
The Beaufort Gyre reserves most of the freshwater in the Arctic Ocean. Observation shows that the freshwater content over 2016–2018 far exceeds the level over the plateau period 2008–2012. Modeling the vertical temperature and salinity structure and their changes in the Beaufort Gyre is a way to und...
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Online Access: | https://doi.org/10.1016/j.accre.2021.12.004 https://doaj.org/article/725801f9d8484389b33b0994daa407a2 |
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ftdoajarticles:oai:doaj.org/article:725801f9d8484389b33b0994daa407a2 2023-05-15T14:45:33+02:00 Improvements on the upper-ocean simulation from 2007 to 2018 in the Canada Basin Long-Jiang MU Xiao-Yu WANG 2022-04-01T00:00:00Z https://doi.org/10.1016/j.accre.2021.12.004 https://doaj.org/article/725801f9d8484389b33b0994daa407a2 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S1674927821001842 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2021.12.004 https://doaj.org/article/725801f9d8484389b33b0994daa407a2 Advances in Climate Change Research, Vol 13, Iss 2, Pp 196-204 (2022) Beaufort Gyre Numerical simulation Upper Arctic Ocean Freshwater content Meteorology. Climatology QC851-999 Social sciences (General) H1-99 article 2022 ftdoajarticles https://doi.org/10.1016/j.accre.2021.12.004 2022-12-31T04:28:42Z The Beaufort Gyre reserves most of the freshwater in the Arctic Ocean. Observation shows that the freshwater content over 2016–2018 far exceeds the level over the plateau period 2008–2012. Modeling the vertical temperature and salinity structure and their changes in the Beaufort Gyre is a way to understand the process related to such step changes. We configured a pan-Arctic sea ice-ocean model with a southern boundary at ∼7°N in the Atlantic Ocean. The numerical simulation with sea surface salinity restoring, a latitude dependent horizontal diffusivity scaled by the squared buoyancy frequency, and a weak vertical diffusivity of 5 × 10−7 m2 s−1 in the Arctic Ocean better reproduces the sea ice extent, the Pacific summer halocline water, and the freshwater variations as observed. The sea surface salinity restoring mitigates the surface desalination in the North Atlantic Ocean, therefore a weaker ocean stratification prevents the excessive warming in the intermediate Arctic Ocean. It is also found that the weak vertical background diffusivity is the major factor in our model to preserve the vertical ocean structure in the Canada Basin and also the step change of freshwater recently. In addition to resolving eddy activities in high resolution models, the success in our low resolution model suggests that tuning the vertical diffusivity serves as another approach to simulate the increasing freshwater content in the recent decade. Article in Journal/Newspaper Arctic Arctic Ocean canada basin North Atlantic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Canada Pacific Advances in Climate Change Research 13 2 196 204 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Beaufort Gyre Numerical simulation Upper Arctic Ocean Freshwater content Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
spellingShingle |
Beaufort Gyre Numerical simulation Upper Arctic Ocean Freshwater content Meteorology. Climatology QC851-999 Social sciences (General) H1-99 Long-Jiang MU Xiao-Yu WANG Improvements on the upper-ocean simulation from 2007 to 2018 in the Canada Basin |
topic_facet |
Beaufort Gyre Numerical simulation Upper Arctic Ocean Freshwater content Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
description |
The Beaufort Gyre reserves most of the freshwater in the Arctic Ocean. Observation shows that the freshwater content over 2016–2018 far exceeds the level over the plateau period 2008–2012. Modeling the vertical temperature and salinity structure and their changes in the Beaufort Gyre is a way to understand the process related to such step changes. We configured a pan-Arctic sea ice-ocean model with a southern boundary at ∼7°N in the Atlantic Ocean. The numerical simulation with sea surface salinity restoring, a latitude dependent horizontal diffusivity scaled by the squared buoyancy frequency, and a weak vertical diffusivity of 5 × 10−7 m2 s−1 in the Arctic Ocean better reproduces the sea ice extent, the Pacific summer halocline water, and the freshwater variations as observed. The sea surface salinity restoring mitigates the surface desalination in the North Atlantic Ocean, therefore a weaker ocean stratification prevents the excessive warming in the intermediate Arctic Ocean. It is also found that the weak vertical background diffusivity is the major factor in our model to preserve the vertical ocean structure in the Canada Basin and also the step change of freshwater recently. In addition to resolving eddy activities in high resolution models, the success in our low resolution model suggests that tuning the vertical diffusivity serves as another approach to simulate the increasing freshwater content in the recent decade. |
format |
Article in Journal/Newspaper |
author |
Long-Jiang MU Xiao-Yu WANG |
author_facet |
Long-Jiang MU Xiao-Yu WANG |
author_sort |
Long-Jiang MU |
title |
Improvements on the upper-ocean simulation from 2007 to 2018 in the Canada Basin |
title_short |
Improvements on the upper-ocean simulation from 2007 to 2018 in the Canada Basin |
title_full |
Improvements on the upper-ocean simulation from 2007 to 2018 in the Canada Basin |
title_fullStr |
Improvements on the upper-ocean simulation from 2007 to 2018 in the Canada Basin |
title_full_unstemmed |
Improvements on the upper-ocean simulation from 2007 to 2018 in the Canada Basin |
title_sort |
improvements on the upper-ocean simulation from 2007 to 2018 in the canada basin |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.accre.2021.12.004 https://doaj.org/article/725801f9d8484389b33b0994daa407a2 |
geographic |
Arctic Arctic Ocean Canada Pacific |
geographic_facet |
Arctic Arctic Ocean Canada Pacific |
genre |
Arctic Arctic Ocean canada basin North Atlantic Sea ice |
genre_facet |
Arctic Arctic Ocean canada basin North Atlantic Sea ice |
op_source |
Advances in Climate Change Research, Vol 13, Iss 2, Pp 196-204 (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674927821001842 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2021.12.004 https://doaj.org/article/725801f9d8484389b33b0994daa407a2 |
op_doi |
https://doi.org/10.1016/j.accre.2021.12.004 |
container_title |
Advances in Climate Change Research |
container_volume |
13 |
container_issue |
2 |
container_start_page |
196 |
op_container_end_page |
204 |
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1766316955496611840 |