2020
DOI: 10.1175/jpo-d-20-0086.1
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Mean Conditions and Seasonality of the West Greenland Boundary Current System near Cape Farewell

Abstract: The structure, transport, and seasonal variability of the West Greenland boundary current system near Cape Farewell are investigated using a high-resolution mooring array deployed from 2014-2018. The boundary current system is comprised of three components: the West Greenland Coastal Current, which advects cold and fresh Upper Polar Water (UPW); the West Greenland Current, which transports warm and salty Irminger Water (IW) along the upper-slope and UPW at the surface; and the Deep Western Boundary Current whi… Show more

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Cited by 31 publications
(63 citation statements)
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“…Tracks from GDP drifters also do not show a coherent WGCC core in that area, only downstream of Julianehab Trough (Figure 4a). The location of the WGCC core may be time variable, as could be interpreted from Pacini et al (2020). The combination of EGC-DrIFT and GDP datasets (Figure 4a) shows that most drifters originating from the EGCC (red) spread over the western shelf, while most EGC-origin drifters (blue) flow along the western shelfbreak, with exchanges taking place between the two.…”
Section: Discussionmentioning
confidence: 99%
“…Tracks from GDP drifters also do not show a coherent WGCC core in that area, only downstream of Julianehab Trough (Figure 4a). The location of the WGCC core may be time variable, as could be interpreted from Pacini et al (2020). The combination of EGC-DrIFT and GDP datasets (Figure 4a) shows that most drifters originating from the EGCC (red) spread over the western shelf, while most EGC-origin drifters (blue) flow along the western shelfbreak, with exchanges taking place between the two.…”
Section: Discussionmentioning
confidence: 99%
“…The observations reported here are from the first 4 years (2014)(2015)(2016)(2017)(2018) of the OSNAP Iceland Basin array, and further updates to these results will be forthcoming as OSNAP is extended; it is currently planned to continue until at least 2024. Besides the observations of the ISOW plume described here, the basin-wide OSNAP array provides continuous measurements across the other major deep boundary current systems of the subpolar gyre-including the DWBC off east Greenland (Hopkins et al, 2019), west Greenland (Pacini et al, 2020), and in the Labrador Sea (Zantopp et al, 2017)-so that an integrated, long-term analysis of the transports of the deep limb of the AMOC around the entire subpolar North Atlantic can be achieved. The subpolar North Atlantic is currently undergoing remarkable changes, having recently experienced the largest freshening event in the upper eastern subpolar basin observed in the past 120 years (Holliday et al, 2020).…”
Section: Discussionmentioning
confidence: 99%
“…At the 53 • N array, the salinity is closer to values found in the interior Labrador Sea compared to the Greenland side, consistent with the view that there is significant input of LSW from the interior. However, the water here is still warmer and saltier than that found in the convective interior, suggesting that it also contains some remnant of Irminger Water (IW), which enters the Labrador Sea on the northern side in a mean core depth of about 500 m, and can be seen as a local salinity maximum near this depth (Pacini et al, 2020). In this study, we will focus on the variability of properties in this LSW layer, using data from the sensors mounted at about 600 m on the moorings, representing the full width of the boundary current from the shelf break area (K7, K8), via the core (K9), into the outer edge and recirculation regime (K10).…”
Section: Moored Sensor Datamentioning
confidence: 83%
“…Convection also takes place in the Irminger Sea (de Jong et al, 2018), leading to a somewhat weaker, but still significant uptake of oxygen (Maze et al, 2012;Palevsky and Nicholson, 2018). The water mass formed by convection in the Irminger Sea, known there as Irminger Sea Intermediate Water, or ISIW (Le Bras et al, 2020), is what we have referred to here as Irminger Water (IW).…”
Section: Lsw Formation and Export Pathwaysmentioning
confidence: 99%