Wintertime water mass transformation in the western Iceland and Greenland Seas
Author Posting. © American Geophysical Union, 2021. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 126(8), (2021): e2020JC016893, https://doi.org/10.1029...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/27736 2023-05-15T15:12:41+02:00 Wintertime water mass transformation in the western Iceland and Greenland Seas Huang, Jie Pickart, Robert S. Bahr, Frank B. McRaven, Leah T. Xu, Fanghua 2021-07-14 https://hdl.handle.net/1912/27736 unknown American Geophysical Union https://doi.org/10.1029/2020JC016893 Huang, J., Pickart, R. S., Bahr, F., McRaven, L. T., & Xu, F. (2021). Wintertime water mass transformation in the western Iceland and Greenland Seas. Journal of Geophysical Research: Oceans, 126(8), e2020JC016893. https://hdl.handle.net/1912/27736 doi:10.1029/2020JC016893 Huang, J., Pickart, R. S., Bahr, F., McRaven, L. T., & Xu, F. (2021). Wintertime water mass transformation in the western Iceland and Greenland Seas. Journal of Geophysical Research: Oceans, 126(8), e2020JC016893. doi:10.1029/2020JC016893 Overflows Nordic Seas Ocean convection Article 2021 ftwhoas https://doi.org/10.1029/2020JC016893 2022-05-28T23:04:21Z Author Posting. © American Geophysical Union, 2021. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 126(8), (2021): e2020JC016893, https://doi.org/10.1029/2020JC016893. Hydrographic and velocity data from a 2018 winter survey of the western Iceland and Greenland Seas are used to investigate the ventilation of overflow water feeding Denmark Strait. We focus on the two general classes of overflow water: warm, saline Atlantic-origin Overflow Water (AtOW) and cold, fresh Arctic-origin Overflow Water (ArOW). The former is found predominantly within the East Greenland Current (EGC), while the latter resides in the interior of the Iceland and Greenland Seas. Progressing north to south, the properties of AtOW in the EGC are modified diapycnally during the winter, in contrast to summer when along-isopycnal mixing dominates. The water column response to a 10-days cold-air outbreak was documented using repeat observations. During the event, the northerly winds pushed the freshwater cap of the EGC onshore, and convection modified the water at the seaward edge of the current. Lateral transfer of heat and salt from the core of AtOW in the EGC appears to have influenced some of this water mass transformation. The long-term evolution of the mixed layers in the interior was investigated using a 1-D mixing model. This suggests that, under strong atmospheric forcing, the densest component of ArOW can be ventilated in this region. Numerous anti-cyclonic eddies spawned from the EGC were observed during the winter survey, revealing that these features can play differing roles in modifying/prohibiting the open-ocean convection. Funding was provided by the National Science Foundation under grant OCE-1558742. 2022-01-14 Article in Journal/Newspaper Arctic Denmark Strait East Greenland east greenland current Greenland Iceland Nordic Seas Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Greenland Journal of Geophysical Research: Oceans 126 8 |
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Open Polar |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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language |
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topic |
Overflows Nordic Seas Ocean convection |
spellingShingle |
Overflows Nordic Seas Ocean convection Huang, Jie Pickart, Robert S. Bahr, Frank B. McRaven, Leah T. Xu, Fanghua Wintertime water mass transformation in the western Iceland and Greenland Seas |
topic_facet |
Overflows Nordic Seas Ocean convection |
description |
Author Posting. © American Geophysical Union, 2021. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 126(8), (2021): e2020JC016893, https://doi.org/10.1029/2020JC016893. Hydrographic and velocity data from a 2018 winter survey of the western Iceland and Greenland Seas are used to investigate the ventilation of overflow water feeding Denmark Strait. We focus on the two general classes of overflow water: warm, saline Atlantic-origin Overflow Water (AtOW) and cold, fresh Arctic-origin Overflow Water (ArOW). The former is found predominantly within the East Greenland Current (EGC), while the latter resides in the interior of the Iceland and Greenland Seas. Progressing north to south, the properties of AtOW in the EGC are modified diapycnally during the winter, in contrast to summer when along-isopycnal mixing dominates. The water column response to a 10-days cold-air outbreak was documented using repeat observations. During the event, the northerly winds pushed the freshwater cap of the EGC onshore, and convection modified the water at the seaward edge of the current. Lateral transfer of heat and salt from the core of AtOW in the EGC appears to have influenced some of this water mass transformation. The long-term evolution of the mixed layers in the interior was investigated using a 1-D mixing model. This suggests that, under strong atmospheric forcing, the densest component of ArOW can be ventilated in this region. Numerous anti-cyclonic eddies spawned from the EGC were observed during the winter survey, revealing that these features can play differing roles in modifying/prohibiting the open-ocean convection. Funding was provided by the National Science Foundation under grant OCE-1558742. 2022-01-14 |
format |
Article in Journal/Newspaper |
author |
Huang, Jie Pickart, Robert S. Bahr, Frank B. McRaven, Leah T. Xu, Fanghua |
author_facet |
Huang, Jie Pickart, Robert S. Bahr, Frank B. McRaven, Leah T. Xu, Fanghua |
author_sort |
Huang, Jie |
title |
Wintertime water mass transformation in the western Iceland and Greenland Seas |
title_short |
Wintertime water mass transformation in the western Iceland and Greenland Seas |
title_full |
Wintertime water mass transformation in the western Iceland and Greenland Seas |
title_fullStr |
Wintertime water mass transformation in the western Iceland and Greenland Seas |
title_full_unstemmed |
Wintertime water mass transformation in the western Iceland and Greenland Seas |
title_sort |
wintertime water mass transformation in the western iceland and greenland seas |
publisher |
American Geophysical Union |
publishDate |
2021 |
url |
https://hdl.handle.net/1912/27736 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Denmark Strait East Greenland east greenland current Greenland Iceland Nordic Seas |
genre_facet |
Arctic Denmark Strait East Greenland east greenland current Greenland Iceland Nordic Seas |
op_source |
Huang, J., Pickart, R. S., Bahr, F., McRaven, L. T., & Xu, F. (2021). Wintertime water mass transformation in the western Iceland and Greenland Seas. Journal of Geophysical Research: Oceans, 126(8), e2020JC016893. doi:10.1029/2020JC016893 |
op_relation |
https://doi.org/10.1029/2020JC016893 Huang, J., Pickart, R. S., Bahr, F., McRaven, L. T., & Xu, F. (2021). Wintertime water mass transformation in the western Iceland and Greenland Seas. Journal of Geophysical Research: Oceans, 126(8), e2020JC016893. https://hdl.handle.net/1912/27736 doi:10.1029/2020JC016893 |
op_doi |
https://doi.org/10.1029/2020JC016893 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
126 |
container_issue |
8 |
_version_ |
1766343334152896512 |