ON EVALUATION OF THE ROLE OF THERMAL AND WIND FACTORS FOR A PHYSICAL MODEL OF THE WORLD OCEAN GENERAL CIRCULATION SYSTEM

2019 ◽  
Vol 47 (3) ◽  
pp. 80-91
Author(s):  
V. G. Neiman

The main content of the work consists of certain systematization and addition of longexisting, but eventually deformed and partly lost qualitative ideas about the role of thermal and wind factors that determine the physical mechanism of the World Ocean’s General Circulation System (OGCS). It is noted that the conceptual foundations of the theory of the OGCS in one form or another are contained in the works of many well-known hydrophysicists of the last century, but the aggregate, logically coherent description of the key factors determining the physical model of the OGCS in the public literature is not so easy to find. An attempt is made to clarify and concretize some general ideas about the two key blocks that form the basis of an adequate physical model of the system of oceanic water masses motion in a climatic scale. Attention is drawn to the fact that when analyzing the OGCS it is necessary to take into account not only immediate but also indirect effects of thermal and wind factors on the ocean surface. In conclusion, it is noted that, in the end, by the uneven flow of heat to the surface of the ocean can be explained the nature of both external and almost all internal factors, in one way or another contributing to the excitation of the general, or climatic, ocean circulation.

Author(s):  
Volodymyr O. Yemelianov ◽  

The rapid development of marine sciences and innovations in the world leads to the increasing use of their fundamental and applied results, including sea-related technologies, in virtually all spheres of human existence. In the public policy of developed maritime countries, researches and developments aimed at better understanding the role of the world ocean and the possibilities of its use to address socio-economic and security challenges have long been among the highest priorities. Analyzing the basic problems of organization and functioning of domestic maritime scientific and innovative activities, the author notes that further delay in developing a strategy for such activities may not only lead to the final loss of maritime status by our country, but also complicate prospects for further socio-economic development and weaken the system of national security. The article proposes the conceptual foundations of the strategy for the development of marine scientific and innovative activities in Ukraine.


2007 ◽  
Vol 37 (2) ◽  
pp. 313-337 ◽  
Author(s):  
A. Köhl ◽  
D. Stammer ◽  
B. Cornuelle

Abstract An estimate of the time-varying global ocean circulation for the period 1992–2002 was obtained by combining most of the World Ocean Circulation Experiment (WOCE) ocean datasets with a general circulation model on a 1° horizontal grid. The estimate exactly satisfies the model equations without artificial sources or sinks of momentum, heat, and freshwater. To bring the model into agreement with observations, its initial temperature and salinity conditions were permitted to change, as were the time-dependent surface fluxes of momentum, heat, and freshwater. The estimation of these “control variables” is largely consistent with accepted uncertainties in the hydrographic climatology and meteorological analyses. The estimated time-mean horizontal transports of volume, heat, and freshwater, which were largely underestimated in the previous 2° optimization performed by Stammer et al., have converged with time-independent estimates from box inversions over most parts of the World Ocean. Trends in the model’s heat content are 7% larger than those reported by Levitus and correspond to a global net heat uptake of about 1.1 W m−2 over the model domain. The associated model trend in sea surface height over the estimation period resembles the observations from Ocean Topography Experiment (TOPEX)/Poseidon over most of the global ocean. Sea surface height changes in the model are primarily steric but show contributions from mass redistributions from the subpolar North Atlantic Ocean and the Southern Ocean to the subtropical Pacific Ocean gyres. Steric contributions are primarily temperature based but are partly compensated by salt variation. However, the North Atlantic and the Southern Ocean reveal a clear contribution of salt to large-scale sea level variations.


2016 ◽  
Vol 46 (12) ◽  
pp. 3751-3775 ◽  
Author(s):  
Olivier Arzel ◽  
Alain Colin de Verdière

AbstractThe turbulent diapycnal mixing in the ocean is currently obtained from microstructure and finestructure measurements, dye experiments, and inverse models. This study presents a new method that infers the diapycnal mixing from low-resolution numerical calculations of the World Ocean whose temperatures and salinities are restored to the climatology. At the difference of robust general circulation ocean models, diapycnal diffusion is not prescribed but inferred. At steady state the buoyancy equation shows an equilibrium between the large-scale diapycnal advection and the restoring terms that take the place of the divergence of eddy buoyancy fluxes. The geography of the diapycnal flow reveals a strong regional variability of water mass transformations. Positive values of the diapycnal flow indicate an erosion of a deep-water mass and negative values indicate a creation. When the diapycnal flow is upward, a diffusion law can be fitted in the vertical and the diapycnal eddy diffusivity is obtained throughout the water column. The basin averages of diapycnal diffusivities are small in the first 1500 m [O(10−5) m2 s−1] and increase downward with bottom values of about 2.5 × 10−4 m2 s−1 in all ocean basins, with the exception of the Southern Ocean (50°–30°S), where they reach 12 × 10−4 m2 s−1. This study confirms the small diffusivity in the thermocline and the robustness of the higher canonical Munk’s value in the abyssal ocean. It indicates that the upward dianeutral transport in the Atlantic mostly takes place in the abyss and the upper ocean, supporting the quasi-adiabatic character of the middepth overturning.


2011 ◽  
Vol 46 (3) ◽  
pp. 671-685 ◽  
Author(s):  
Richard Drayton

The contemporary historian, as she or he speaks to the public about the origins and meanings of the present, has important ethical responsibilities. ‘Imperial’ historians, in particular, shape how politicians and the public imagine the future of the world. This article examines how British imperial history, as it emerged as an academic subject since about 1900, often lent ideological support to imperialism, while more generally it suppressed or avoided the role of violence and terror in the making and keeping of the Empire. It suggests that after 2001, and during the Iraq War, in particular, a new Whig historiography sought to retail a flattering narrative of the British Empire’s past, and concludes with a call for a post-patriotic imperial history which is sceptical of power and speaks for those on the underside of global processes.


2021 ◽  
pp. 7-14
Author(s):  
T.I. Grabelnykh ◽  
◽  
N.A. Sablina ◽  
A.N. Parkhomenko

Researched are systemic aspects of the process of implementing national projects in Russia. Attention is focused on effectiveness of solving key problems of development of the public administration system in the context of the relationship between the state and society under modern conditions. The institution of public control in Russia is characterized through prerequisites of formation, organizational and legal status and main functions. The work defines the place and role of the institution of public opinion in the system of public administration and public control, substantiates its regulatory mechanisms, factors and agents of influence. In the aspect of systemic relationship between public administration and public control, the specificity of implementation of national projects in the transforming Russian society is revealed. A sociological vision of the “reset” of conceptual foundations of interrelationships between the public administration system and the institution of public control both at the stage of “entering” the space of national projects and in the process of their implementation is presented. It has been proved, that at the present stage the main integrating factor is consolidation of society through an updated "state-society contract". The analysis of historical and modern practices of public participation made it possible to draw a conclusion about the increase in the function of “co-management” of public control bodies in the interaction of state and public structures.


Educação ◽  
2017 ◽  
Vol 40 (1) ◽  
pp. 73
Author(s):  
Evandro Coggo Cristofoletti ◽  
Milena Pavan Serafim

The economic and political changes in the world, from the 1970s, changed the political education of the Public Institutions of Higher Education in the world. The direction of these changes was clear: the university approachedthe market and the company and created interaction mechanisms that did not exist. The article therefore reviews the academic literature that interprets the relationship between university and market/company from two perspectives: approaches that positively position of interactions, exposing their motivations, interests and forms of interaction, especially the notions on Knowledge Economy and Entrepreneurial University; approaches that observe this interaction critically and reflectively, exposing the problems of interaction, its negative aspects and the reflection of the true role of the public university from the perspective of Academic Capitalism.


Author(s):  
Marina Kameneva ◽  
Elena Paymakova

The article notes that the theme of culture and cultural policy for modern Iran is not a marginal issue. Culture is seen by the country’s leadership as an important component of its state political and ideological doctrine. There is analyzed the role of the Islamic factor and cultural heritage in the cultural policy of the Islamic Republic of Iran over four decades of its existence. Particular attention is paid to the role of the theory of the dialogue of civilizations proposed by M. Khatami as well as to the changing attitude towards it in the public consciousness of Iranian society. It is emphasized that the theme of “Iran and the West” is becoming particularly acute in the country today, contributing to its politicization. An attempt is being made to show that Iranian culture is increasingly becoming an important factor in the foreign policy activities of the leadership of the Islamic Republic of Iran, contributing to the strengthening of the country’s position in the world arena as a whole and the country’s leading role in the region, the realization of the idea of exporting the Islamic Revolution and implementing Iranian cultural expansion outside the country.


Fisheries ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 18-23 ◽  
Author(s):  
Vladimir Sauskan ◽  
Viktor Osadchii ◽  
Aleksandr Arkhipov

A role of Russian science is increasing along with domestic fisheries development in the world Ocean. One of the main tasks of researchers is to protect the interests of Russian fisheries on the international level. Such protection is based on living resources investigation and formulation of recommendations on their sustainable development, taking into account the international regulations’ and bilateral agreements’ demands.


Author(s):  
Leti Volpp

The line dividing citizens and those excluded from its promise was long shaped by the public/private dichotomy, consigning women to the private, while reserving citizenship’s sphere of the public domain for men. Feminist theorists, in criticizing this dichotomy, have examined the relationships between citizenship, dependency, and reproduction. While those considered sexually deviant have suffered exclusions from citizenship, gay and lesbian subjects in some sites currently enjoy a role as model citizens. This shift has accompanied a transition in the role of the citizen from producer of work to consumer: the privatized, self-governing, and sexually free individual is today’s prototypical citizen. This new sexual citizen is contrasted with illiberal others, who are cast outside as unfit candidates for citizenship. Queer citizenship does not provide a more encompassing vision; citizenship is not available to be queered, given how it inevitably splits the world into those who belong and those left outside.


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