On the relation between sea-surface heat flow and thermal circulation in
                        the ocean

Walin, Gösta

doi:10.3402/tellusa.v34i2.10801

Cited by 334 publications

(429 citation statements)

References 4 publications

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“…For this purpose, we define a cumulative volume transport function with respect to salinity (Walin, 1977(Walin, , 1982 M(S) = − v(x, y, z) H[S − S 0 (x, y, z)] dxdz,…”

Section: Methodsmentioning

confidence: 99%

Liquid freshwater transport and Polar Surface Water characteristics in the East Greenland Current during the AO-02 Oden expedition

Nilsson

Björk

Rudels³

et al. 2008

Progress in Oceanography

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Dynamical features of the East Greenland Current (EGC) are synthesized from a survey conducted by the Swedish icebreaker Oden during the International Arctic Ocean -02 expedition (AO-02) in May 2002 with emphasis on the liquid freshwater transport and Polar Surface Water. The data include hydrography and lowered Acoustic Doppler Current Profiler (LADCP) velocities in eight transects along the EGC, from the Fram Strait in the north to the Denmark Strait in the south. The survey reveals a strong confinement of the low-salinity polar water in the EGC to the continental slope/shelf-a feature of relevance for the stability of the thermohaline circulation in the Arctic Mediterranean. The southward transport of liquid freshwater in the EGC was found to vary considerably between the sections, ranging between 0.01 and 0.1 Sverdrup. Computations based on geostrophic as well as LADCP velocities give a section-averaged southward freshwater transport of 0.06 Sverdrup in the EGC during May 2002. Furthermore, Oden data suggest that the liquid freshwater transport was as large north of the Fram Strait as it was south of the Denmark Strait.

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“…For this purpose, we define a cumulative volume transport function with respect to salinity (Walin, 1977(Walin, , 1982 M(S) = − v(x, y, z) H[S − S 0 (x, y, z)] dxdz,…”

Section: Methodsmentioning

confidence: 99%

Liquid freshwater transport and Polar Surface Water characteristics in the East Greenland Current during the AO-02 Oden expedition

Nilsson

Björk

Rudels³

et al. 2008

Progress in Oceanography

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“…Later, the physical understanding of water mass formation was substantially developed following the pioneering work of Walin (1982) who demonstrated that buoyancy has to be supplied to allow water to cross isopycnal surfaces. Soon after, McDougall (1984) proposed a solid theoretical (mathematical) formulation of the problem.…”

Section: Diapycnic and Isopycnic Mixing -General Considerations And Dmentioning

confidence: 99%

Mixing in the Black Sea detected from the temporal and spatial variability of oxygen and sulfide – Argo float observations and numerical modelling

et al. 2014

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Abstract. The temporal and spatial variability of the upper ocean hydrochemistry in the Black Sea is analysed using data originating from profiling floats with oxygen sensors and carried out with a coupled three-dimensional circulationbiogeochemical model including 24 biochemical state variables. Major focus is on the dynamics of suboxic zone which is the interface separating oxygenated and anoxic waters. The scatter of oxygen data seen when plotted in density coordinates is larger than those for temperature, salinity and passive tracers. This scatter is indicative of vigorous biogeochemical reactions in the suboxic zone, which acts as a boundary layer or internal sink for oxygen. This internal sink affects the mixing patterns of oxygen compared to the ones of conservative tracers. Two different regimes of ventilation of pycnocline were clearly identified: a gyre-dominated (cyclonic) regime in winter and a coastal boundary layer (anticyclonic eddy)-dominated regime in summer. These contrasting states are characterized by very different pathways of oxygen intrusions along the isopycnals and vertical oxygen conveyor belt organized in multiple-layered cells formed in each gyre. The contribution of the three-dimensional modelling to the understanding of the Black Sea hydro-chemistry, and in particular the coast-to-open-sea mixing, is also demonstrated. Evidence is given that the formation of oxic waters and of cold intermediate waters, although triggered by the same physical process, each follow a different evolution. The difference in the depths of the temperature minimum and the oxygen maximum indicates that the variability of oxygen is not only just a response to physical forcing and changes in the surface conditions, but undergoes its own evolution.

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“…Tziperman [1986] applied an idea proposed by Walin [1982] to look at the surface buoyancy flux in the ocean between two outcropping isopycnals. Tandon and Garrett [ 1997] and Garrett and Tandon [ 1997] included in this the effects of seasonal and diurnal variation of mixed layer thickness.…”

Section: V_mentioning

confidence: 99%

Estuarine salt flux through an isohaline surface

MacCready¹,

Geyer²

2001

J. Geophys. Res.

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Abstract. The salinity budget in an estuary is analyzed using an isohaline as the seaward bounding surface of the volume of integration. It is found that the rate of change of volume integrated salinity is governed by two processes: (1) the "drift" of the isohaline through the fluid, and (2) turbulent salt flux through the isohaline. This analysis highlights the role of turbulent salt flux in maintaining the salinity intrusion. In contrast, more standard budgets using a stationary, vertical cross section as the seaward end of the volume of integration attribute almost all along-estuary salt flux to advective processes such as the gravitational circulation. The isohaline budget is explored using an analytical model and using results from a threedimensional numerical model. The numerical results highlight the complex spatial and temporal interplay between turbulent mixing and the shape of the isohaline. Averaging over a time period during which the freshwater volume behind the isohaline is constant reduces the isohaline budget to a balance of two terms: the time-mean, area-integrated turbulent salinity flux across the isohaline being equal to the mean fiver flow times the salinity of the isohaline.

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On the relation between sea-surface heat flow and thermal circulation in the ocean

Cited by 334 publications

References 4 publications

Liquid freshwater transport and Polar Surface Water characteristics in the East Greenland Current during the AO-02 Oden expedition

Liquid freshwater transport and Polar Surface Water characteristics in the East Greenland Current during the AO-02 Oden expedition

Mixing in the Black Sea detected from the temporal and spatial variability of oxygen and sulfide – Argo float observations and numerical modelling

Estuarine salt flux through an isohaline surface

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