Pacific Water Pathway in the Arctic Ocean and Beaufort Gyre in Two Simulations With Different Horizontal Resolutions
A set of numerical simulations (with horizontal resolutions of 1/4 degrees and 1/12 degrees ) is conducted to study the Pacific Water pathway in the Arctic Ocean and the freshwater content in Beaufort Gyre. Passive tracer tags the Pacific Water entering through Bering Strait into the Arctic Ocean an...
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Online Access: | https://era.library.ualberta.ca/items/748aab34-6f29-464d-82a6-dd54aa06d58d https://doi.org/10.7939/r3-049n-3x33 |
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ftunivalberta:oai:era.library.ualberta.ca:748aab34-6f29-464d-82a6-dd54aa06d58d 2024-06-23T07:48:51+00:00 Pacific Water Pathway in the Arctic Ocean and Beaufort Gyre in Two Simulations With Different Horizontal Resolutions Hu, Xianmin Myers, Paul G. Lu, Youyu 2019-01-01 https://era.library.ualberta.ca/items/748aab34-6f29-464d-82a6-dd54aa06d58d https://doi.org/10.7939/r3-049n-3x33 English eng https://era.library.ualberta.ca/items/748aab34-6f29-464d-82a6-dd54aa06d58d doi:10.7939/r3-049n-3x33 © 2019. American Geophysical Union. All Rights Reserved. Arctic Ocean Currents Digital simulation Eddies Fresh water Kinetic energy Marine transport NEMO Nucleus for European Modeling of the Ocean Numerical Models Ocean circulation Ocean currents Oceanic reanalysis data Pacific Ocean Salinity Sea water Temperature Thermohaline circulation Transport Velocity Water balance Article (Published) 2019 ftunivalberta https://doi.org/10.7939/r3-049n-3x33 2024-06-03T03:09:00Z A set of numerical simulations (with horizontal resolutions of 1/4 degrees and 1/12 degrees ) is conducted to study the Pacific Water pathway in the Arctic Ocean and the freshwater content in Beaufort Gyre. Passive tracer tags the Pacific Water entering through Bering Strait into the Arctic Ocean and further reveals its circulation routes and spatial distribution. Both the 1/4 degrees and 1/12 degrees simulations show Pacific Water mainly follows the Transpolar Drift over the integration period of 2002-2016, with a limited amount being able to flow eastward along the Alaskan coast to enter the Canadian Arctic Archipelago. However, the circulation pattern of Pacific Water within the Beaufort Gyre is quite different with a stronger and tighter anticyclonic circulation in the 1/12 degrees simulation corresponding to the difference in freshwater content. The 1/12 degrees simulation successfully reproduces the overall recent increasing trend in the freshwater content in the Beaufort Gyre, while the 1/4 degrees simulation fails to maintain the high freshwater content state after 2007. Budget analysis suggests that this difference in Beaufort Gyre freshwater storage is mainly caused by lateral advection. The lateral freshwater flux is decomposed into two components due to the slow-varying circulation and mesoscale eddies. The difference in the capability to resolve eddies in the two simulations causes the difference in the temporal evolution of both components of the lateral flux. Article in Journal/Newspaper Arctic Archipelago Arctic Arctic Ocean Bering Strait Canadian Arctic Archipelago University of Alberta: Era - Education and Research Archive Arctic Arctic Ocean Bering Strait Canadian Arctic Archipelago Pacific |
institution |
Open Polar |
collection |
University of Alberta: Era - Education and Research Archive |
op_collection_id |
ftunivalberta |
language |
English |
topic |
Arctic Ocean Currents Digital simulation Eddies Fresh water Kinetic energy Marine transport NEMO Nucleus for European Modeling of the Ocean Numerical Models Ocean circulation Ocean currents Oceanic reanalysis data Pacific Ocean Salinity Sea water Temperature Thermohaline circulation Transport Velocity Water balance |
spellingShingle |
Arctic Ocean Currents Digital simulation Eddies Fresh water Kinetic energy Marine transport NEMO Nucleus for European Modeling of the Ocean Numerical Models Ocean circulation Ocean currents Oceanic reanalysis data Pacific Ocean Salinity Sea water Temperature Thermohaline circulation Transport Velocity Water balance Hu, Xianmin Myers, Paul G. Lu, Youyu Pacific Water Pathway in the Arctic Ocean and Beaufort Gyre in Two Simulations With Different Horizontal Resolutions |
topic_facet |
Arctic Ocean Currents Digital simulation Eddies Fresh water Kinetic energy Marine transport NEMO Nucleus for European Modeling of the Ocean Numerical Models Ocean circulation Ocean currents Oceanic reanalysis data Pacific Ocean Salinity Sea water Temperature Thermohaline circulation Transport Velocity Water balance |
description |
A set of numerical simulations (with horizontal resolutions of 1/4 degrees and 1/12 degrees ) is conducted to study the Pacific Water pathway in the Arctic Ocean and the freshwater content in Beaufort Gyre. Passive tracer tags the Pacific Water entering through Bering Strait into the Arctic Ocean and further reveals its circulation routes and spatial distribution. Both the 1/4 degrees and 1/12 degrees simulations show Pacific Water mainly follows the Transpolar Drift over the integration period of 2002-2016, with a limited amount being able to flow eastward along the Alaskan coast to enter the Canadian Arctic Archipelago. However, the circulation pattern of Pacific Water within the Beaufort Gyre is quite different with a stronger and tighter anticyclonic circulation in the 1/12 degrees simulation corresponding to the difference in freshwater content. The 1/12 degrees simulation successfully reproduces the overall recent increasing trend in the freshwater content in the Beaufort Gyre, while the 1/4 degrees simulation fails to maintain the high freshwater content state after 2007. Budget analysis suggests that this difference in Beaufort Gyre freshwater storage is mainly caused by lateral advection. The lateral freshwater flux is decomposed into two components due to the slow-varying circulation and mesoscale eddies. The difference in the capability to resolve eddies in the two simulations causes the difference in the temporal evolution of both components of the lateral flux. |
format |
Article in Journal/Newspaper |
author |
Hu, Xianmin Myers, Paul G. Lu, Youyu |
author_facet |
Hu, Xianmin Myers, Paul G. Lu, Youyu |
author_sort |
Hu, Xianmin |
title |
Pacific Water Pathway in the Arctic Ocean and Beaufort Gyre in Two Simulations With Different Horizontal Resolutions |
title_short |
Pacific Water Pathway in the Arctic Ocean and Beaufort Gyre in Two Simulations With Different Horizontal Resolutions |
title_full |
Pacific Water Pathway in the Arctic Ocean and Beaufort Gyre in Two Simulations With Different Horizontal Resolutions |
title_fullStr |
Pacific Water Pathway in the Arctic Ocean and Beaufort Gyre in Two Simulations With Different Horizontal Resolutions |
title_full_unstemmed |
Pacific Water Pathway in the Arctic Ocean and Beaufort Gyre in Two Simulations With Different Horizontal Resolutions |
title_sort |
pacific water pathway in the arctic ocean and beaufort gyre in two simulations with different horizontal resolutions |
publishDate |
2019 |
url |
https://era.library.ualberta.ca/items/748aab34-6f29-464d-82a6-dd54aa06d58d https://doi.org/10.7939/r3-049n-3x33 |
geographic |
Arctic Arctic Ocean Bering Strait Canadian Arctic Archipelago Pacific |
geographic_facet |
Arctic Arctic Ocean Bering Strait Canadian Arctic Archipelago Pacific |
genre |
Arctic Archipelago Arctic Arctic Ocean Bering Strait Canadian Arctic Archipelago |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Bering Strait Canadian Arctic Archipelago |
op_relation |
https://era.library.ualberta.ca/items/748aab34-6f29-464d-82a6-dd54aa06d58d doi:10.7939/r3-049n-3x33 |
op_rights |
© 2019. American Geophysical Union. All Rights Reserved. |
op_doi |
https://doi.org/10.7939/r3-049n-3x33 |
_version_ |
1802639186563432448 |