An inflated subpolar gyre blows life toward the northeastern Atlantic

Hátún, Hjálmar; Lohmann, Katja; Matei, Daniela; Jungclaus, Johann; Pacariz, Selma; Bersch, Manfred; Gíslason, Ástþór; Ólafsson, Jón; Reid, Philip C.

doi:10.1016/j.pocean.2016.07.009

Cited by 53 publications

(58 citation statements)

References 84 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Buoyancy and turbulent fluxes also impact mixed layer depths and influence bloom 80 timing and strength . Consistent with this expectation, links between physical changes in the subpolar gyre and in situ observed changes in nutrients and ecosystems at several subpolar timeseries sites have been suggested [Johnson et al 2013, Hátún et al 2016.…”

Section: Introductionmentioning

confidence: 66%

Mechanisms of northern North Atlantic biomass variability

McKinley

Ritzer

Lovenduski

2018

Preprint

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 66%

Mechanisms of northern North Atlantic biomass variability

McKinley

Ritzer

Lovenduski

2018

Preprint

View full text Add to dashboard Cite

show abstract

“…These changes were initiated by weaker atmospheric forcing and shallower winter convection in the NW Atlantic (Häkkinen and Rhines, 2004). The variable shape and circulation strength of the SPG is intimately related to the morphology of main oceanic fronts (Thierry et al, 2008;Hátún et al, 2016). Such fronts are highly biologically productive and have been identified as feeding hotspots of migratory seabirds while occupying the high seas during the non-breeding period (Edwards et al, 2013;Scales et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Such years result in increased abundance of the ecologically most important zooplankton species, Calanus finmarchicus, both within the Irminger Sea and on the south Iceland shelf ("Z" in Figure 1; Hátún et al, 2016). The zooplankton concentration southwest of Iceland thus exhibits strong inter-annual variability.…”

Section: Introductionmentioning

confidence: 99%

“…The westward route follows the Icelandic shelf, from where Hátún et al (2016) presented long-term on-shelf zooplankton data. In the west the birds gather in a region between FIGURE 1 | Map of the northeastern Atlantic Ocean.…”

Section: Introductionmentioning

confidence: 99%

“…The Faroe kittiwake breeding success is sampled at site "K," and the Icelandic zooplankton record is sampled at site "Z." 29 • and 36 • W (Bogdanova et al, 2011), which roughly coincides with the highly productive subarctic front west of the Reykjanes Ridge (Pedchenko, 2005;Hátún et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Dynamics of the North Atlantic Subpolar Gyre Introduces Predictability to the Breeding Success of Kittiwakes

2017

View full text Add to dashboard Cite

Since the open-ocean subpolar Atlantic is amongst the most predictable regions in the world, our results hold promise for predicting the general production to seabird populations over a large geographical region adjacent to the northern North Atlantic and the Arctic Mediterranean. Colonies of black-legged kittiwakes Rissa tridactyla in the North Atlantic have declined markedly since the mid-1990s, partly due to repeatedly failing breeding seasons. We show a close link between the breeding success of a kittiwake colony in the Faroe Islands and the subpolar gyre index. Successful breeding follows winters with an expanded subpolar gyre and, by inference, increased zooplankton abundances southwest of Iceland. The environmental conditions in the northwestern Atlantic during the non-breeding and pre-breeding seasons might therefore be important. Furthermore, the subpolar gyre dynamics might influence the local food abundance on the Faroe shelf during the breeding season.

show abstract

Further intensification of deep convection in the Labrador Sea in 2016

Yashayaev

Loder

2017

Geophysical Research Letters

138

165

View full text Add to dashboard Cite

There has been a progressive deepening of winter convection in the Labrador Sea since 2012, with the individual profile maximum depth exceeding 1800 m since 2014 and reaching 2100 m in 2016. This increase, during repeated positive phases of the winter North Atlantic Oscillation (NAO), resembles that during the formation of the record depth (2500 m) Labrador Sea Water (LSW) class in 1987–1994, attributed to repeated positive NAO forcing having provided critical preconditioning. The 2012–2016 LSW class is one of the deepest and most persistent ever observed (back to 1938). Year‐round observations from profiling Argo floats since 2002 complemented by annual surveys are providing novel information on the seasonal‐to‐decadal evolution of LSW, such as its variable density, the recent multiyear preconditioning, and its 2016 density being the highest since the mid‐1990s. These findings should help international observation programs and numerical model studies investigating LSW influences on the subpolar North Atlantic and Atlantic Meridional Overturning Circulation.

show abstract

An inflated subpolar gyre blows life toward the northeastern Atlantic

Cited by 53 publications

References 84 publications

Mechanisms of northern North Atlantic biomass variability

Mechanisms of northern North Atlantic biomass variability

The Dynamics of the North Atlantic Subpolar Gyre Introduces Predictability to the Breeding Success of Kittiwakes

Further intensification of deep convection in the Labrador Sea in 2016

Contact Info

Product

Resources

About