Unprecedented decline of Arctic sea ice outflow in 2018

Sumata, Hiroshi; Steur, Laura de; Gerland, Sebastian; Divine, Dmitry; Pavlova, Olga

doi:10.1038/s41467-022-29470-7

Cited by 28 publications

(29 citation statements)

References 72 publications

(81 reference statements)

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“…Over the 2014–2016 period, freshwater outflows increased through the western Canadian Archipelago (CA2; +16% compared to 2008–2014) and decreased through Fram Strait (−30%; same period). Recent observation‐based studies documented such a reduction both in liquid and solid freshwater outflow at Fram Strait (Karpouzoglou et al., 2022; Sumata et al., 2022). Z. Wang et al.…”

Section: Discussionmentioning

confidence: 97%

Changes in Freshwater Distribution and Pathways in the Arctic Ocean Since 2007 in the Mercator Ocean Global Operational System

et al. 2022

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In contrast with the midlatitudes and tropics, the stratification of the Arctic Ocean is essentially salinity-driven (Carmack, 2007;Timmermans & Jayne, 2016). Low-salinity waters of the upper water column are cold and play a major role in isolating sea ice at the surface from the heat carried by the underlying Atlantic Waters (AW, defined as S A > 34.9 g kg −1 , Θ > 0°C; Rudels et al., 1996). The low-salinity waters (with a wide range of salinities 0 < S A < 34.9 g kg −1 ), which make up the halocline and the surface mixed layer, are commonly called freshwaters (e.g.,

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Section: Discussionmentioning

confidence: 97%

Changes in Freshwater Distribution and Pathways in the Arctic Ocean Since 2007 in the Mercator Ocean Global Operational System

et al. 2022

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“…However, the water mass patterns that feed into the DSOW from the Nordic Seas and the processes behind them are complex. Indeed, a recent modeling study by Wu et de Steur, 2018;Woodgate, 2018;Frajka-Williams et al, 2021;Karpouzoglou et al, 2022;Sumata et al, 2022). Note the different y-axes.…”

Section: Impacts Of the Arctic On The Amocmentioning

confidence: 99%

“…In each case, historical CMIP6 data, SSP1-2.6, and SSP5-8.5 projections are shown (ensemble spread and ensemble mean with the lines). In each panel, available observations are plotted in red(Curry et al, 2014;de Steur, 2018;Woodgate, 2018;Frajka- Williams et al, 2021;Karpouzoglou et al, 2022;Sumata et al, 2022). Note the different y-axes.…”

mentioning

confidence: 99%

Interactions between the Arctic Mediterranean and the Atlantic Meridional Overturning Circulation: A Review

Weijer

Haine

Siddiqui

et al. 2022

Oceanog

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The Atlantic Meridional Overturning Circulation (AMOC) plays a significant role in the global climate system, and its behavior in a warming climate is a matter of significant concern. The AMOC is thought to be driven largely by ocean heat loss in the subpolar North Atlantic Ocean, but recent research increasingly emphasizes the importance of the Arctic Mediterranean for the AMOC. In turn, the AMOC may influence the Arctic heat budget through its impact on poleward heat transport. Hence, understanding the processes that link the AMOC and the Arctic is critical for our ability to project how both may evolve in a warming climate. In this paper we review some of the recent research that is shaping our thinking about the AMOC and its two-way interactions with the Arctic.

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“…Dominance of this low saline layer over much of the area enforces strong upper water column stratification 1 which, combined with its low nutrient content, is currently the main limiting factor for primary production in the region 2 , 3 . The supply of freshwater to the NEGS is changing due to acceleration of mass loss from the Greenland Ice Sheet (GrIS) 4 , increased central Arctic Ocean freshwater content 5 , increased Arctic sea ice melt, and changes in freshwater 6 and sea ice export, in the western Fram Strait 7 , 8 . Similarly, the air-sea exchange of heat just off the NEGS has greatly increased due to the westward retreat of the sea ice edge 9 .…”

Section: Introductionmentioning

confidence: 99%

Vertical redistribution of principle water masses on the Northeast Greenland Shelf

et al. 2022

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The Northeast Greenland shelf (NEGS) is a recipient of Polar Water (PW) from the Arctic Ocean, Greenland Ice Sheet melt, and Atlantic Water (AW). Here, we compile hydrographical measurements to quantify long-term changes in fjords and coastal waters. We find a profound change in the vertical distribution of water masses, with AW shoaling >60 m and PW thinning >50 m since early 2000’s. The properties of these waters have also changed. AW is now 1 °C warmer and the salinity of surface waters and PW are 1.8 and 0.68 lower, respectively. The AW changes have substantially weakened stratification south of ~74°N, indicating increased accessibility of heat and potentially nutrients associated with AW. The Atlantification earlier reported for the eastern Fram Strait and Barents Sea region has also propagated to the NEGS. The increased presence of AW, is an important driver for regional change leading to a likely shift in ecosystem structure and function.

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Unprecedented decline of Arctic sea ice outflow in 2018

Cited by 28 publications

References 72 publications

Changes in Freshwater Distribution and Pathways in the Arctic Ocean Since 2007 in the Mercator Ocean Global Operational System

Changes in Freshwater Distribution and Pathways in the Arctic Ocean Since 2007 in the Mercator Ocean Global Operational System

Interactions between the Arctic Mediterranean and the Atlantic Meridional Overturning Circulation: A Review

Vertical redistribution of principle water masses on the Northeast Greenland Shelf

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