Sources and upstream pathways of the densest overflow water in the Nordic Seas

Thumbnail Image
Date
2020-10-23
Authors
Huang, Jie
 Pickart, Robert S.
 Huang, Rui Xin
 Lin, Peigen
 Brakstad, Ailin
 Xu, Fanghua
Linked Authors
Person
Person
Person
Person
Person
Files
s41467-020-19050-y.pdf (8.25 MB)
41467_2020_19050_MOESM1_ESM.pdf (7.07 MB)
41467_2020_19050_MOESM2_ESM.pdf (182.7 KB)
Alternative Title
Citable URI
https://hdl.handle.net/1912/26414
As Published
https://doi.org/10.1038/s41467-020-19050-y
Date Created
Location
DOI
10.1038/s41467-020-19050-y
Related Materials
Replaces
Replaced By
Keywords
Abstract
Overflow water from the Nordic Seas comprises the deepest limb of the Atlantic Meridional Overturning Circulation, yet questions remain as to where it is ventilated and how it reaches the Greenland-Scotland Ridge. Here we use historical hydrographic data from 2005-2015, together with satellite altimeter data, to elucidate the source regions of the Denmark Strait and Faroe Bank Channel overflows and the pathways feeding these respective sills. A recently-developed metric is used to calculate how similar two water parcels are, based on potential density and potential spicity. This reveals that the interior of the Greenland Sea gyre is the primary wintertime source of the densest portion of both overflows. After subducting, the water progresses southward along several ridge systems towards the Greenland-Scotland Ridge. Kinematic evidence supports the inferred pathways. Extending the calculation back to the 1980s reveals that the ventilation occurred previously along the periphery of the Greenland Sea gyre.
Description
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Huang, J., Pickart, R. S., Huang, R. X., Lin, P., Brakstad, A., & Xu, F. Sources and upstream pathways of the densest overflow water in the Nordic Seas. Nature Communications, 11(1), (2020): 5389, doi:10.1038/s41467-020-19050-y.
Embargo Date
Citation
Huang, J., Pickart, R. S., Huang, R. X., Lin, P., Brakstad, A., & Xu, F. (2020). Sources and upstream pathways of the densest overflow water in the Nordic Seas. Nature Communications, 11(1), 5389.
Cruises
Cruise ID
Cruise DOI
Vessel Name
Collections
Physical Oceanography (PO)
Except where otherwise noted, this item's license is described as Attribution 4.0 International