Winter convection in the Lofoten Basin according to ARGO buoys and hydrodynamic modeling

Федоров, А. В.; Bashmachnikov, Igor; Белоненко, Т. В.

doi:10.21638/spbu07.2019.308

Cited by 25 publications

(21 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Isachsen [2011,2015] analyzed vortex generation in the context of baroclinic instability of the NASC. Dong et al [2007] considered flux in case of the influence of natural obstacle (an island) on a current. It also leads to the baroclinic instability of the current and eddy generation.…”

Section: Discussionmentioning

confidence: 99%

“…The use of this dataset for the Lofoten Basin is efficient due to the existence of regular contact measurements (e.g. over 5000 Argo profiles for 2005-2016 (see Figure 3 in [Fedorov et al, 2019]. Chen et al…”

Section: Datamentioning

confidence: 99%

“…Secondly, intensive winter mixing leads to regeneration of the intermediate waters in the area of the most frequent position of the LV [Bloshkina and Ivanov, 2016;Bashmachnikov et al, 2017b]. The mixed layer depth reaches over 1000 meters in the vortex core [Alexeev et al, 2016;Fedorov et al, 2019;Søiland et al, 2016].…”

Section: Introductionmentioning

confidence: 99%

“…Being a complex deterministic nonlinear physical event on the one hand and purely random largescale turbulent system, on the other hand, the vortex can be described in terms of turbulent viscosity [Carton, 2001;Dong et al, 2007]. Deformations of its cores, merging, splitting, shape stretching, or dissipations take place, while vortices interact.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Interaction of mesoscale vortices in the Lofoten\vspace *{.5ex} Basin based on the GLORYS database

Федоров¹,

Белоненко²

2020

Russ. J. Earth Sci.

View full text Add to dashboard Cite

We explore the interaction of mesoscale eddies in the Lofoten Basin of the Norwegian Sea using the GLORYS 12v1 eddy-resolving reanalysis. The Lofoten Basin is the area of the intensive ocean-atmosphere interactions and many mesoscale eddies are formed due to instabilities of the branches of the Norwegian Current. We describe the spatial distribution of kinetic energy, relative vorticity, and Okubo-Weiss parameter during the eddy interaction. Using the approach of turbulent theory, we study the exchange of related eddy kinetic energy () and show a strong dependence from a width of window averaging. The fluxes describe features of interactions between parts of eddies and indicate a difference in the stability of the parts. The most stable parts have positive values of. They can transfer energy to the less stable parts. In other words, the positive values of mean transport of kinetic energy from the main fluxes to turbulent pulsations. We demonstrate that the field of relative vorticity of one anticyclonic eddy merging with another one consists of three parts with alternating signs of. The parts look like two concentric rings surrounding the central part of the eddy. The sign of each part corresponds to gain or loss of kinetic energy. We detect the positive values of for both the external ring and the central part of the eddy. For the middle ring of the eddy, is negative. This demonstrates the tendency to the stability of the structure as the result of the merging. And vice versa, positive values of break the eddy into two parts when splitting.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Interaction of mesoscale vortices in the Lofoten\vspace *{.5ex} Basin based on the GLORYS database

Федоров¹,

Белоненко²

2020

Russ. J. Earth Sci.

View full text Add to dashboard Cite

show abstract

“…Another explanation might be related to eddy convective processes in the LB for which thermal factors play a dominant role. The maximum values of timespace averaged temperature are specific for ACEs in summer, and minimum values are for CEs in winter and in spring, when the winter convection usually reaches its maximum [Fedorov et al, 2019].…”

Section: Es5004mentioning

confidence: 97%

Seasonal variability of mesoscale eddies of the Lofoten Basin using satellite and model data

Travkin¹,

Белоненко²

2019

Russ. J. Earth Sci.

View full text Add to dashboard Cite

The Lofoten Basin in the Norwegian Sea is the area where the warm Atlantic Water exhibits the greatest loss of heat than anywhere else in the Nordic Seas. It is called a "hot spot" of the Nordic Seas because of its high intense mesoscale eddy activity. Mesoscale eddies contribute significantly to the total oceanic heat and salt transport by advective trapping, stirring and mixing, and thus play an important role in the heat and salt balance of the region. A purpose of this study is to examine seasonal variability of mesoscale eddies in the Lofoten Basin using satellite altimetry data and GLORYS reanalysis. Satellite altimetry is used to track individual eddies, and co-located vertical profiles based on GLORYS data allow to study thermohaline characteristics inside the eddy cores. We analyze numbers of cyclonic and anticyclonic eddies in the Lofoten Basin using an eddy identification and tracking algorithm and demonstrate that the occurrences of eddies depend strongly on the season. We analyze seasonal variability of temperature, salinity, and potential density anomalies in zonal sections across the core of the Lofoten Vortex and explore spatial variability of thermohaline characteristics of mesoscale eddies at the depth of 450 m in different seasons.

show abstract

Interaction of the Lofoten Vortex with a Satellite Cyclone

Белоненко

Zinchenko

Федоров

et al. 2021

Pure Appl. Geophys.

View full text Add to dashboard Cite

Winter convection in the Lofoten Basin according to ARGO buoys and hydrodynamic modeling

Cited by 25 publications

References 0 publications

Interaction of mesoscale vortices in the Lofoten\vspace *{.5ex} Basin based on the GLORYS database

Interaction of mesoscale vortices in the Lofoten\vspace *{.5ex} Basin based on the GLORYS database

Seasonal variability of mesoscale eddies of the Lofoten Basin using satellite and model data

Interaction of the Lofoten Vortex with a Satellite Cyclone

Contact Info

Product

Resources

About