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Dynamics of Ocean General Circulation and Its Variability
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Dynamics of Ocean General Circulation and Its Variability

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Physical Oceanography".

Deadline for manuscript submissions: closed (15 April 2022) | Viewed by 6473

Special Issue Editor

Dr. Anatoly Gusev

E-Mail Website
Guest Editor
Marchuk Institute of Numerical Mathematics of the Russian Academy of Sciences, Moscow 119333, Russia
Interests: oceanic and marine circulation; sea ice; numerical simulation; ocean modelling; air-sea interaction; large-scale and synoptic oceanic processes; oceanic turbulence parameterizations
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This issue is supposed to cover different aspects of oceanic and marine circulation. The ocean is a very significant element of the Earth. Besides a scientific and economical role, it has a great contribution to the Earth climate formation. At the same time, there are not always enough available data or information on the ocean and its parameters. Therefore, it would be useful to have joint efforts in different fields to study oceanic and marine features from multiple positions.

The author can present, in their papers, results of modelling ocean and sea dynamics features, focusing on both original numerical techniques and the investigation of physical processes. There can be contributions to the analysis of available oceanographic data and their use for the investigation of oceanic processes, including operational oceanography. Questions of climate can be considered with respect to the ocean as the most inertial and accumulative element of the Earth climate system. As well, sea ice is a very important part of cryosphere concerning the ocean, and we welcome papers on different aspects of sea ice studies.

Dr. Anatoly Gusev
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • oceanic and marine circulation
  • sea ice
  • numerical simulation
  • ocean modelling
  • air–sea interaction
  • large-scale and synoptic oceanic processes
  • oceanic turbulence parameterizations
  • operational oceanography

Published Papers (4 papers)

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14 pages, 507 KiB  
Article
Interdecadal Oscillation of the Ocean Heat Content as a Contribution to Understanding of Physical Aspects of the Present-Day Climate
by Vladimir Byshev, Anatoly Gusev, Victor Neiman and Alexandra Sidorova
J. Mar. Sci. Eng. 2022, 10(8), 1064; https://doi.org/10.3390/jmse10081064 - 3 Aug 2022
Cited by 2 | Viewed by 1260
Abstract
A Specific feature of the present-day climate dynamics consists in its multidecadal oscillations with a period of about 20–60 years, and intradecadal disturbances with time scales of 2–8 years. The period of 1940–1999 was distinctive due to the two–phase structure in which the [...] Read more.
A Specific feature of the present-day climate dynamics consists in its multidecadal oscillations with a period of about 20–60 years, and intradecadal disturbances with time scales of 2–8 years. The period of 1940–1999 was distinctive due to the two–phase structure in which the initial phase (1940–1974) was substantially dry, and the final one (1975–1999) was relatively humid. The transition of the climate from the dry to the humid phase in the mid-1970s was recognized as a climatic shift. The certain globality and quasisynchronism of multidecadal climate changes occur involving planetary thermodynamic structures in the two most important components of the climate system, namely, the ocean and the atmosphere. The search for the origin of the observed present-day climate variability revealed the World Ocean (WO) active upper layer (AUL) heat content to demonstrate sequential multidecadal phases of heat accumulation and discharge consistent with multidecadal phases of climate disturbances. Thus, the WO AUL heat accumulation phase corresponds to a dry climate, and its thermal discharge corresponds to a relatively humid one. The mechanism of the observed multidecadal phase variability in the present-day climate consists of the planetary intrasystemic redistribution of heat between WO and continental air masses, where the general circulation of the atmosphere plays the role of an intermediary. Full article
(This article belongs to the Special Issue Dynamics of Ocean General Circulation and Its Variability)
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31 pages, 19393 KiB  
Article
Mesoscale Dynamics and Eddy Heat Transport in the Japan/East Sea from 1990 to 2010: A Model-Based Analysis
by Dmitry Stepanov, Vladimir Fomin, Anatoly Gusev and Nikolay Diansky
J. Mar. Sci. Eng. 2022, 10(1), 33; https://doi.org/10.3390/jmse10010033 - 30 Dec 2021
Cited by 3 | Viewed by 1933
Abstract
The driving mechanisms of mesoscale processes and associated heat transport in the Japan/East Sea (JES) from 1990 to 2010 were examined using eddy-resolving ocean model simulations. The simulated circulation showed correctly reproduced JES major basin-scale currents and mesoscale dynamics features. We show that [...] Read more.
The driving mechanisms of mesoscale processes and associated heat transport in the Japan/East Sea (JES) from 1990 to 2010 were examined using eddy-resolving ocean model simulations. The simulated circulation showed correctly reproduced JES major basin-scale currents and mesoscale dynamics features. We show that mesoscale eddies can deepen isotherms/isohalines up to several hundred meters and transport warm and low salinity waters along the western and eastern JES boundaries. The analysis of eddy kinetic energy (EKE) showed that the mesoscale dynamics reaches a maximum intensity in the upper 300 m layer. Throughout the year, the EKE maximum is observed in the southeastern JES, and a pronounced seasonal variability is observed in the southwestern and northwestern JES. The comparison of the EKE budget components confirmed that various mechanisms can be responsible for the generation of mesoscale dynamics during the year. From winter to spring, the baroclinic instability of basin-scale currents is the leading mechanism of the JES mesoscale dynamics’ generation. In summer, the leading role in the generation of the mesoscale dynamics is played by the barotropic instability of basin-scale currents, which are responsible for the emergence of mesoscale eddies, and in autumn, the leading role is played by instabilities and the eddy wind work. We show that the meridional heat transport (MHT) is mainly polewards. Furthermore, we reveal two paths of eddy heat transport across the Subpolar Front: along the western and eastern (along 138∘ E) JES boundaries. Near the Tsugaru Strait, we describe the detected intensive westward eddy heat transport reaching its maximum in the first half of the year and decreasing to the minimum by summer. Full article
(This article belongs to the Special Issue Dynamics of Ocean General Circulation and Its Variability)
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13 pages, 1224 KiB  
Article
Upper-Bound General Circulation of the Ocean: A Theoretical Exposition
by Hsien-Wang Ou
J. Mar. Sci. Eng. 2021, 9(10), 1090; https://doi.org/10.3390/jmse9101090 - 7 Oct 2021
Cited by 1 | Viewed by 1379
Abstract
This paper considers the general ocean circulation (GOC) within the thermodynamical closure of our climate theory, which aims to deduce the generic climate state from first principles. The preceding papers of this theory have reduced planetary fluids to warm/cold masses and determined their [...] Read more.
This paper considers the general ocean circulation (GOC) within the thermodynamical closure of our climate theory, which aims to deduce the generic climate state from first principles. The preceding papers of this theory have reduced planetary fluids to warm/cold masses and determined their bulk properties, which provide prior constraints for the derivation of the upper-bound circulation when the potential vorticity (PV) is homogenized in moving masses. In a companion paper on the general atmosphere circulation (GAC), this upper bound is seen to reproduce the observed prevailing wind, therefore forsaking discordant explanations of the easterly trade winds and the polar jet stream. In this paper on the ocean, we again show that this upper bound may replicate broad features of the observed circulation, including a western-intensified subtropical gyre and a counter-rotating tropical gyre feeding the equatorial undercurrent. Since PV homogenization has short-circuited the wind curl, the Sverdrup dynamics does not need to be the sole progenitor of the western intensification, as commonly perceived. Together with GAC, we posit that PV homogenization provides a unifying dynamical principle of the large-scale planetary circulation, which may be interpreted as the maximum macroscopic motion extractable by microscopic stirring, within the confines of thermal differentiation. Full article
(This article belongs to the Special Issue Dynamics of Ocean General Circulation and Its Variability)
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16 pages, 19622 KiB  
Article
Undercurrents in the Northeastern Black Sea Detected on the Basis of Multi-Model Experiments and Observations
by Sergey G. Demyshev, Olga A. Dymova, Natalia V. Markova, Evgenia A. Korshenko, Maksim V. Senderov, Nikita A. Turko and Konstantin V. Ushakov
J. Mar. Sci. Eng. 2021, 9(9), 933; https://doi.org/10.3390/jmse9090933 - 28 Aug 2021
Cited by 5 | Viewed by 2067
Abstract
Numerical simulation results of the Black Sea circulation obtained by four ocean dynamics models are compared to each other and to in situ data in order to determine the features of the Black Sea deep-water circulation such as deep-water undercurrents. The year 2011 [...] Read more.
Numerical simulation results of the Black Sea circulation obtained by four ocean dynamics models are compared to each other and to in situ data in order to determine the features of the Black Sea deep-water circulation such as deep-water undercurrents. The year 2011 is chosen as the test period due to the availability of deep-sea observations, including ARGO profiles and ADCP current velocities. Validation of the simulation results is based on comparison with the temperature and salinity measured by the ARGO floats. Anticyclonic currents (undercurrents) under the cyclonic Rim Current are detected by the results of all numerical models near the North Caucasian coast. The main characteristics of undercurrents are consistent with in situ data on current velocity up to a depth of 1000 m obtained by the Aqualog probe at the IO RAS test site near Gelendzhik in June 2011. The analysis of the spatio-temporal variability of the modeled salinity and velocity fields reveals that the most probable origin of the undercurrents is the horizontal density gradient of seawater in the region. Full article
(This article belongs to the Special Issue Dynamics of Ocean General Circulation and Its Variability)
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