2023
DOI: 10.1038/s41467-023-35889-3
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Role of air-sea heat flux on the transformation of Atlantic Water encircling the Nordic Seas

Abstract: The warm-to-cold densification of Atlantic Water (AW) around the perimeter of the Nordic Seas is a critical component of the Atlantic Meridional Overturning Circulation (AMOC). However, it remains unclear how ongoing changes in air-sea heat flux impact this transformation. Here we use observational data, and a one-dimensional mixing model following the flow, to investigate the role of air-sea heat flux on the cooling of AW. We focus on the Norwegian Atlantic Slope Current (NwASC) and Front Current (NwAFC), whe… Show more

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Cited by 5 publications
(2 citation statements)
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“…The surface‐forced overturning reaches its maximum at σ θ = 27.60 kg m −3 , which is slightly lighter than the density level of maximum overturning (27.75 kg m −3 ). This suggests that additional transformation takes place that is not driven by surface buoyancy forcing, for example, through lateral exchange (mixing) between the boundary currents and the interior of the Nordic Seas (Evans et al., 2023; Huang et al., 2023; Isachsen et al., 2012).…”
Section: Overflow Variability Determined By Surface Forcing In the No...mentioning
confidence: 99%
“…The surface‐forced overturning reaches its maximum at σ θ = 27.60 kg m −3 , which is slightly lighter than the density level of maximum overturning (27.75 kg m −3 ). This suggests that additional transformation takes place that is not driven by surface buoyancy forcing, for example, through lateral exchange (mixing) between the boundary currents and the interior of the Nordic Seas (Evans et al., 2023; Huang et al., 2023; Isachsen et al., 2012).…”
Section: Overflow Variability Determined By Surface Forcing In the No...mentioning
confidence: 99%
“…The fact that the temperature correlation between the two transects becomes much lower when the time series are detrended reflects the strong impacts of surface heat loss along the Atlantic Water pathway on ocean temperature and water mass transformation, which were demonstrated in different studies [e.g., 155,161,162]. The salinity correlation coefficients indicate an advection timescale of approximately one year between the two transects.…”
Section: Barents Sea Openingmentioning
confidence: 90%