Revisiting the Circulation of Hudson Bay: Evidence for a Seasonal Pattern
The Hudson Bay Complex is the outlet for many Canadian rivers, receiving roughly 900 km3/year of river runoff. Historically, studies found a consistent cyclonic flow year-round in Hudson Bay, due to the geostrophic boundary current induced by river discharge and cyclonic wind forcing that was suppor...
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Language: | English |
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American Geophysical Union
2020
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Online Access: | http://hdl.handle.net/1993/34777 https://doi.org/10.1029/2019GL082344 |
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/34777 2023-06-18T03:41:02+02:00 Revisiting the Circulation of Hudson Bay: Evidence for a Seasonal Pattern Ridenour, Natasha A. Hu, Xianmin Sydor, Kevin Myers, Paul G. Barber, David G. 2020-07-14T20:24:37Z application/pdf http://hdl.handle.net/1993/34777 https://doi.org/10.1029/2019GL082344 eng eng American Geophysical Union Ridenour, N. A., Hu, X., Sydor, K., Myers, P. G., & Barber, D. G. (2019). Revisiting the circulation of Hudson Bay: Evidence for a seasonal pattern. Geophysical Research Letters, 46, 3891–3899. https://doi.org/10.1029/ 2019GL082344 http://hdl.handle.net/1993/34777 doi:10.1029/2019GL082344 open access circulation Hudson Bay ocean current river discharge seasonal pattern Technical Report 2020 ftunivmanitoba https://doi.org/10.1029/2019GL082344 2023-06-04T17:44:37Z The Hudson Bay Complex is the outlet for many Canadian rivers, receiving roughly 900 km3/year of river runoff. Historically, studies found a consistent cyclonic flow year-round in Hudson Bay, due to the geostrophic boundary current induced by river discharge and cyclonic wind forcing that was supported by available observations at that time. Using a high-resolution ocean general circulation model, we show that in summer, the mean circulation is not cyclonic but consists of multiple small cyclonic and anticyclonic features, with the mean flow directed through the center of the bay. Absolute Dynamic Topography and velocity observations also show this seasonal flow pattern. We find that this summer circulation is driven by geostrophic currents, generated by steric height gradients, which are induced by increased river discharge during the spring freshet, and reinforced by anticyclonic seasonal wind patterns. Natural Sciences and Engineering Research Council of Canada and Manitoba Hydro Report Hudson Bay MSpace at the University of Manitoba Canada Hudson Hudson Bay Geophysical Research Letters 46 7 3891 3899 |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
circulation Hudson Bay ocean current river discharge seasonal pattern |
spellingShingle |
circulation Hudson Bay ocean current river discharge seasonal pattern Ridenour, Natasha A. Hu, Xianmin Sydor, Kevin Myers, Paul G. Barber, David G. Revisiting the Circulation of Hudson Bay: Evidence for a Seasonal Pattern |
topic_facet |
circulation Hudson Bay ocean current river discharge seasonal pattern |
description |
The Hudson Bay Complex is the outlet for many Canadian rivers, receiving roughly 900 km3/year of river runoff. Historically, studies found a consistent cyclonic flow year-round in Hudson Bay, due to the geostrophic boundary current induced by river discharge and cyclonic wind forcing that was supported by available observations at that time. Using a high-resolution ocean general circulation model, we show that in summer, the mean circulation is not cyclonic but consists of multiple small cyclonic and anticyclonic features, with the mean flow directed through the center of the bay. Absolute Dynamic Topography and velocity observations also show this seasonal flow pattern. We find that this summer circulation is driven by geostrophic currents, generated by steric height gradients, which are induced by increased river discharge during the spring freshet, and reinforced by anticyclonic seasonal wind patterns. Natural Sciences and Engineering Research Council of Canada and Manitoba Hydro |
format |
Report |
author |
Ridenour, Natasha A. Hu, Xianmin Sydor, Kevin Myers, Paul G. Barber, David G. |
author_facet |
Ridenour, Natasha A. Hu, Xianmin Sydor, Kevin Myers, Paul G. Barber, David G. |
author_sort |
Ridenour, Natasha A. |
title |
Revisiting the Circulation of Hudson Bay: Evidence for a Seasonal Pattern |
title_short |
Revisiting the Circulation of Hudson Bay: Evidence for a Seasonal Pattern |
title_full |
Revisiting the Circulation of Hudson Bay: Evidence for a Seasonal Pattern |
title_fullStr |
Revisiting the Circulation of Hudson Bay: Evidence for a Seasonal Pattern |
title_full_unstemmed |
Revisiting the Circulation of Hudson Bay: Evidence for a Seasonal Pattern |
title_sort |
revisiting the circulation of hudson bay: evidence for a seasonal pattern |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
http://hdl.handle.net/1993/34777 https://doi.org/10.1029/2019GL082344 |
geographic |
Canada Hudson Hudson Bay |
geographic_facet |
Canada Hudson Hudson Bay |
genre |
Hudson Bay |
genre_facet |
Hudson Bay |
op_relation |
Ridenour, N. A., Hu, X., Sydor, K., Myers, P. G., & Barber, D. G. (2019). Revisiting the circulation of Hudson Bay: Evidence for a seasonal pattern. Geophysical Research Letters, 46, 3891–3899. https://doi.org/10.1029/ 2019GL082344 http://hdl.handle.net/1993/34777 doi:10.1029/2019GL082344 |
op_rights |
open access |
op_doi |
https://doi.org/10.1029/2019GL082344 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
7 |
container_start_page |
3891 |
op_container_end_page |
3899 |
_version_ |
1769006469761466368 |