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The Faroe‐Shetland ...
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Chafik, Léon,1985-Stockholms universitet,Meteorologiska institutionen (MISU)
(författare)
The Faroe‐Shetland Channel Jet : Structure, Variability, and Driving Mechanisms
- Artikel/kapitelEngelska2023
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Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:su-216664
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-216664URI
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https://doi.org/10.1029/2022jc019083DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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The Faroe-Bank Channel (FBC) is a key gateway through which dense overflow water of the Nordic Seas supplies the lower limb of the Atlantic Meridional Overturning Circulation. Most recently, it was discovered that a deep jet through the Faroe-Shetland Channel carries the bulk of this overflow water, but numerous questions regarding its structure, seasonality, and interannual variability as well as its linkage to atmospheric forcing remain poorly understood. A realistic high-resolution ocean reanalysis (GLORYS12; 1993–2018) is, therefore, employed to address these questions. We first confirm that the Faroe-Shetland Channel Jet is a permanent feature in GLORYS12 as well as in an ensemble of low-resolution reanalyses. On seasonal time scales, we find a strong transport covariability between this deep jet and the observed FBC overflow. On interannual time scales, the strength of this deep jet is governed by the wind-forced circulation in the Nordic Seas. Due to the largely barotropic structure of these flows, they have a signature detectable in satellite sea-surface heights. Further, we suggest that the structure of the deep jet is qualitatively consistent with a geostrophic dynamical model that accounts for along-isobath density variations. This study indicates that GLORYS12 is a promising product to study the dense water pathways and dynamics in the Nordic Seas.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Nilsson, Johan,1965-Stockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)jnils
(författare)
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Rossby, T.
(författare)
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Kondetharayil Soman, Arunraj,1988-Stockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)arko8688
(författare)
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Stockholms universitetMeteorologiska institutionen (MISU)
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Geophysical Research - Oceans128:42169-92752169-9291
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