Mean and Seasonal Circulation of the Eastern Chukchi Sea From Moored Timeseries in 2013–2014
From late-summer 2013 to late-summer 2014, a total of 20 moorings were maintained on the eastern Chukchi Sea shelf as part of five independent field programs. This provided the opportunity to analyze an extensive set of timeseries to obtain a broad view of the mean and seasonally varying hydrography...
Published in: | Journal of Geophysical Research: Oceans |
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American Geophysical Union (AGU)
2021
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Online Access: | https://hdl.handle.net/1721.1/140378 |
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ftmit:oai:dspace.mit.edu:1721.1/140378 2023-06-11T04:10:58+02:00 Mean and Seasonal Circulation of the Eastern Chukchi Sea From Moored Timeseries in 2013–2014 Tian, Fei Pickart, Robert S. Lin, Peigen Pacini, Astrid Moore, G. W. K. Stabeno, Phyllis Weingartner, Thomas Itoh, Motoyo Kikuchi, Takashi Dobbins, Elizabeth Bell, Shaun Woodgate, Rebecca A. Danielson, Seth L. Wang, Zhaomin 2021-04-30 application/pdf https://hdl.handle.net/1721.1/140378 en eng American Geophysical Union (AGU) http://dx.doi.org/10.1029/2020jc016863 Journal of Geophysical Research: Oceans 2169-9275 2169-9291 https://hdl.handle.net/1721.1/140378 Tian, F., Pickart, R. S., Lin, P., Pacini, A., Moore, G. W. K., Stabeno, P., et al. (2021). Mean and seasonal circulation of the eastern Chukchi Sea from moored timeseries in 2013–2014. Journal of Geophysical Research: Oceans, 126 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Wiley Article http://purl.org/eprint/type/JournalArticle 2021 ftmit https://doi.org/10.1029/2020jc016863 2023-05-29T08:51:19Z From late-summer 2013 to late-summer 2014, a total of 20 moorings were maintained on the eastern Chukchi Sea shelf as part of five independent field programs. This provided the opportunity to analyze an extensive set of timeseries to obtain a broad view of the mean and seasonally varying hydrography and circulation over the course of the year. Year-long mean bottom temperatures reflected the presence of the strong coastal circulation pathway, while mean bottom salinities were influenced by polynya/lead activity along the coast. The timing of the warm water appearance in spring/summer is linked to advection along the various flow pathways. The timing of the cold water appearance in fall/winter was not reflective of advection nor related to the time of freeze-up. Near the latitude of Barrow Canyon, the cold water was accompanied by freshening. A one-dimensional mixed-layer model demonstrates that wind mixing, due to synoptic storms, overturns the water column resulting in the appearance of the cold water. The loitering pack ice in the region, together with warm southerly winds, melted ice and provided an intermittent source of fresh water that was mixed to depth according to the model. Farther north, the ambient stratification prohibits wind-driven overturning, hence the cold water arrives from the south. The circulation during the warm and cold months of the year is different in both strength and pattern. Our study highlights the multitude of factors involved in setting the seasonal cycle of hydrography and circulation on the Chukchi shelf. Article in Journal/Newspaper Chukchi Chukchi Sea DSpace@MIT (Massachusetts Institute of Technology) Chukchi Sea Chukchi Shelf ENVELOPE(-169.167,-169.167,70.550,70.550) Barrow Canyon ENVELOPE(-154.000,-154.000,72.500,72.500) Journal of Geophysical Research: Oceans 126 5 |
institution |
Open Polar |
collection |
DSpace@MIT (Massachusetts Institute of Technology) |
op_collection_id |
ftmit |
language |
English |
description |
From late-summer 2013 to late-summer 2014, a total of 20 moorings were maintained on the eastern Chukchi Sea shelf as part of five independent field programs. This provided the opportunity to analyze an extensive set of timeseries to obtain a broad view of the mean and seasonally varying hydrography and circulation over the course of the year. Year-long mean bottom temperatures reflected the presence of the strong coastal circulation pathway, while mean bottom salinities were influenced by polynya/lead activity along the coast. The timing of the warm water appearance in spring/summer is linked to advection along the various flow pathways. The timing of the cold water appearance in fall/winter was not reflective of advection nor related to the time of freeze-up. Near the latitude of Barrow Canyon, the cold water was accompanied by freshening. A one-dimensional mixed-layer model demonstrates that wind mixing, due to synoptic storms, overturns the water column resulting in the appearance of the cold water. The loitering pack ice in the region, together with warm southerly winds, melted ice and provided an intermittent source of fresh water that was mixed to depth according to the model. Farther north, the ambient stratification prohibits wind-driven overturning, hence the cold water arrives from the south. The circulation during the warm and cold months of the year is different in both strength and pattern. Our study highlights the multitude of factors involved in setting the seasonal cycle of hydrography and circulation on the Chukchi shelf. |
format |
Article in Journal/Newspaper |
author |
Tian, Fei Pickart, Robert S. Lin, Peigen Pacini, Astrid Moore, G. W. K. Stabeno, Phyllis Weingartner, Thomas Itoh, Motoyo Kikuchi, Takashi Dobbins, Elizabeth Bell, Shaun Woodgate, Rebecca A. Danielson, Seth L. Wang, Zhaomin |
spellingShingle |
Tian, Fei Pickart, Robert S. Lin, Peigen Pacini, Astrid Moore, G. W. K. Stabeno, Phyllis Weingartner, Thomas Itoh, Motoyo Kikuchi, Takashi Dobbins, Elizabeth Bell, Shaun Woodgate, Rebecca A. Danielson, Seth L. Wang, Zhaomin Mean and Seasonal Circulation of the Eastern Chukchi Sea From Moored Timeseries in 2013–2014 |
author_facet |
Tian, Fei Pickart, Robert S. Lin, Peigen Pacini, Astrid Moore, G. W. K. Stabeno, Phyllis Weingartner, Thomas Itoh, Motoyo Kikuchi, Takashi Dobbins, Elizabeth Bell, Shaun Woodgate, Rebecca A. Danielson, Seth L. Wang, Zhaomin |
author_sort |
Tian, Fei |
title |
Mean and Seasonal Circulation of the Eastern Chukchi Sea From Moored Timeseries in 2013–2014 |
title_short |
Mean and Seasonal Circulation of the Eastern Chukchi Sea From Moored Timeseries in 2013–2014 |
title_full |
Mean and Seasonal Circulation of the Eastern Chukchi Sea From Moored Timeseries in 2013–2014 |
title_fullStr |
Mean and Seasonal Circulation of the Eastern Chukchi Sea From Moored Timeseries in 2013–2014 |
title_full_unstemmed |
Mean and Seasonal Circulation of the Eastern Chukchi Sea From Moored Timeseries in 2013–2014 |
title_sort |
mean and seasonal circulation of the eastern chukchi sea from moored timeseries in 2013–2014 |
publisher |
American Geophysical Union (AGU) |
publishDate |
2021 |
url |
https://hdl.handle.net/1721.1/140378 |
long_lat |
ENVELOPE(-169.167,-169.167,70.550,70.550) ENVELOPE(-154.000,-154.000,72.500,72.500) |
geographic |
Chukchi Sea Chukchi Shelf Barrow Canyon |
geographic_facet |
Chukchi Sea Chukchi Shelf Barrow Canyon |
genre |
Chukchi Chukchi Sea |
genre_facet |
Chukchi Chukchi Sea |
op_source |
Wiley |
op_relation |
http://dx.doi.org/10.1029/2020jc016863 Journal of Geophysical Research: Oceans 2169-9275 2169-9291 https://hdl.handle.net/1721.1/140378 Tian, F., Pickart, R. S., Lin, P., Pacini, A., Moore, G. W. K., Stabeno, P., et al. (2021). Mean and seasonal circulation of the eastern Chukchi Sea from moored timeseries in 2013–2014. Journal of Geophysical Research: Oceans, 126 |
op_rights |
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. |
op_doi |
https://doi.org/10.1029/2020jc016863 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
126 |
container_issue |
5 |
_version_ |
1768385731132129280 |