The programme ?sections? and monitoring of World Ocean

The problem of simulating ocean general circulation is considered using an approach developed by G.I. Marchuk. Most attention is focused on problems associated with the application of multi compo nent splitting and adjoint equation methods and with the parameterization of turbulent exchange processes. The statement of the problem, an algorithm of its solution, and the results of the four dimensional tempera ture and salinity data assimilation in a model of World Ocean hydrodynamics are discussed. This algorithm yields qualitatively reliable results, and its main features are modularity, usability, and the possibility of using efficient implicit schemes.

Section: Methods Of Adjoint Equations and Ocean Energy Active Zonesmentioning

confidence: 99%

Simulating large-scale circulation in seas and oceans

Zalesny

Ivchenko

2015

“…English publications [1,2] deter mined the development of operative oceanography. Marchuk [3], however, much earlier offered the Sec tions program, which supposed the active use of numerical models of the ocean circulation to monitor its conditions. In addition, the concept of ocean mon itoring was developed in [4][5][6] on the basis of com bined measurements from the first Soviet oceano graphic satellite and models of the ocean circulation.…”

Section: Introductionmentioning

confidence: 99%

Low-frequency oscillations of the level of enclosed sea

Коротаев

2015

This work studies the variable surface level of a small enclosed basin that is related to the problem of interpreting satellite altimetric data, which assist in observations only of a deviation of a marine basin from unknown average condition needed to be calculated for the reconstruction of the sea level topography. The reconstruction of unknown average condition becomes especially uncertain for the enclosed basins with sig nificant level oscillations due to a variable water balance and requires the attraction of a priori physical con cepts. This work reveals the general principles of response of the sea level to the low frequency changes of the water exchange through the boundary of the basin with a rather arbitrary morphology.

“…In the 1980s, G.I. Marchuk sug gested the "Razrezy" program [1] of investigating energetic active zones of the ocean (EAZO), which have a strong influence on the global circulation. By means of the diagnosis of energetic active zones based on the theory of conjugated equations and a global model of the general atmospheric circulation [2], it became possible to distinguish two such zones, which we currently call regions of storm tracks: the Gulf stream and Kuroshio zones.…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of the dynamics of the general atmospheric circulation in conditions of the global climate change

Martynova

Krupchatnikov

2015

In the last decades, poleward displacements of elements of the general atmospheric circulation such as the Hadley Cell and storm tracks have been observed. On the basis of results of the numerical model ing of climate dynamics using an idealized model of the climatic system, we showed that the tendency to the displacement of storm tracks to the poles in the Northern Hemisphere would continue under the conditions of climate warming (according to the RCP 8.5 scenario). We also discuss the other peculiarities of the dynam ics of the general circulation under the conditions of variable climate, which were revealed in the numerical experiment.