Demons in the North Atlantic: Variability of Deep Ocean Ventilation

MacGilchrist, G. A.; Johnson, H. L.; Lique, C.; Marshall, D. P.

doi:10.1029/2020gl092340

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Demons in the North Atlantic: Variability of Deep Ocean Ventilation

2021
By MacGilchrist, G. A. ; Johnson, H. L. ; Lique, C. ; ...
Source: Geophysical Research Letters, 48(9)

[PDF-1.68 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

MacGilchrist, G. A. ; Johnson, H. L. ; Lique, C. ; Marshall, D. P.

MacGilchrist, G. A. ; Johnson, H. L. ; Lique, C. ; Marshall, D. P. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research)
Description:

Translation of atmospheric forcing variability into the ocean interior via ocean ventilation is an important aspect of transient climate change. On a seasonal timescale in the subtropics, this translation is mediated by a so-called “Demon” that prevents access to all except late-winter mixed-layer water. Here, we use an eddy-permitting numerical circulation model to investigate a similar process operating on longer (interannual) timescales in the subpolar North Atlantic. We find that variations in atmospheric forcing are mediated in their translation to the ocean interior, with year-to-year changes in the late-winter mixed layer depth being the critical factor. The signature of persistent strong atmospheric forcing driving
Keywords:

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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 48(9)
DOI:

https://doi.org/10.1029/2020gl092340
ISSN:

0094-8276;1944-8007;
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PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
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Library
Main Document Checksum:

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urn:sha256:4baace74adfb75a34bf980b2194d4cb96f6b074b5a580f60629097a91d95f503
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https://repository.library.noaa.gov/view/noaa/53952/noaa_53952_DS1.pdf
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