Asynchronous deposition of ice-rafted layers in the Nordic seas and North Atlantic Ocean

Nature ◽  
10.1038/22510 ◽  
1999 ◽  
Vol 400 (6742) ◽  
pp. 348-351 ◽  
Author(s):  
J. A. Dowdeswell ◽  
A. Elverhøi ◽  
J. T. Andrews ◽  
D. Hebbeln
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Nordic Seas

Nordic Seas Hydrography in the Context of Arctic and North Atlantic Ocean Dynamics

2021 ◽  
Vol 51 (1) ◽  
pp. 101-114
Author(s):  
J. S. Kenigson ◽  
M.-L. Timmermans
Keyword(s):  
Atlantic Ocean ◽  
Arctic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Ocean Dynamics ◽  
Nordic Seas ◽  
Convective Mixing ◽  
The North ◽  
Unified View ◽  
The North Atlantic

AbstractThe hydrography of the Nordic seas, a critical site for deep convective mixing, is controlled by various processes. On one hand, Arctic Ocean exports are thought to freshen the North Atlantic Ocean and the Nordic seas, as in the Great Salinity Anomalies (GSAs) of the 1970s–1990s. On the other hand, the salinity of the Nordic seas covaries with that of the Atlantic inflow across the Greenland–Scotland Ridge, leaving an uncertain role for Arctic Ocean exports. In this study, multidecadal time series (1950–2018) of the Nordic seas hydrography, Subarctic Front (SAF) in the North Atlantic Ocean [separating the water masses of the relatively cool, fresh Subpolar Gyre (SPG) from the warm, saline Subtropical Gyre (STG)], and atmospheric forcing are examined and suggest a unified view. The Nordic seas freshwater content is shown to covary on decadal time scales with the position of the SAF. When the SPG is strong, the SAF shifts eastward of its mean position, increasing the contribution of subpolar relative to subtropical source water to the Atlantic inflow, and vice versa. This suggests that Arctic Ocean fluxes primarily influence the hydrography of the Nordic seas via indirect means (i.e., by freshening the SPG). Case studies of two years with anomalous NAO conditions illustrate how North Atlantic Ocean dynamics relate to the position of the SAF (as indicated by hydrographic properties and stratification changes in the upper water column), and therefore to the properties of the Atlantic inflow and Nordic seas.

scholarly journals Recent evolution of 129I levels in the Nordic Seas and the North Atlantic Ocean

2018 ◽  
Vol 621 ◽  
pp. 376-386 ◽  
Author(s):  
Carlos Vivo-Vilches ◽  
José María López-Gutiérrez ◽  
Raúl Periáñez ◽  
Charlotte Marcinko ◽  
Frédéric Le Moigne ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Nordic Seas ◽  
The North ◽  
The North Atlantic

Spatiotemporal evolution of the chlorophyll a trend in the North Atlantic Ocean

2018 ◽  
Vol 612 ◽  
pp. 1141-1148 ◽  
Author(s):  
Min Zhang ◽  
Yuanling Zhang ◽  
Qi Shu ◽  
Chang Zhao ◽  
Gang Wang ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Chlorophyll A ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Spatiotemporal Evolution ◽  
The North ◽  
The North Atlantic
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