Submesoscale modulation of deep water formation in the Labrador Sea

Tagklis, Filippos; Bracco, A.; Ito, T.; Castelao, R. M.

doi:10.1038/s41598-020-74345-w

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i

Submesoscale modulation of deep water formation in the Labrador Sea

2020
By Tagklis, Filippos ; Bracco, A. ; Ito, T. ; ...
Source: Sci Rep. 2020 Oct 15;10(1):17489.

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Journal Title:

Scientific Reports
Personal Author:

Tagklis, Filippos ; Bracco, A. ; Ito, T. ; Castelao, R. M.

Tagklis, Filippos ; Bracco, A. ; Ito, T. ; Castelao, R. M. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office)

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) Less -
Description:

Submesoscale structures fill the ocean surface, and recent numerical simulations and indirect observations suggest that they may extend to the ocean interior. It remains unclear, however, how far-reaching their impact may be—in both space and time, from weather to climate scales. Here transport pathways and the ultimate fate of the Irminger Current water from the continental slope to Labrador Sea interior are investigated through regional ocean simulations. Submesoscale processes modulate this transport and in turn the stratification of the Labrador Sea interior, by controlling the characteristics of the coherent vortices formed along West Greenland. Submesoscale circulations modify and control the Labrador Sea contribution to the global meridional overturning, with a linear relationship between time-averaged near surface vorticity and/or frontogenetic tendency along the west coast of Greenland, and volume of convected water. This research puts into contest the lesser role of the Labrador Sea in the overall control of the state of the MOC argued through the analysis of recent OSNAP (Overturning in the Subpolar North Atlantic Program) data with respect to estimates from climate models. It also confirms that submesoscale turbulence scales-up to climate relevance, pointing to the urgency of including its advective contribution in Earth systems models.
Keywords:

[+]

Ocean temperature
Source:

Sci Rep. 2020 Oct 15;10(1):17489.
DOI:

https://doi.org/10.1038/s41598-020-74345-w
Pubmed ID:

33060687
Pubmed Central ID:

PMC7566636
Document Type:

Journal Article
Funding:

Grant no. NA16OAR4310173
Place as Subject:

Labrador Sea
Rights Information:

CC BY
Compliance:

PMC
Main Document Checksum:

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urn:sha256:9469c6f32815252ee29072bbf700b85a2037995c5fadf03b31418ec0d26c8432
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/view/noaa/27511/noaa_27511_DS1.pdf
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Submesoscale modulation of deep water formation in the Labrador Sea

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