In this paper, we study the sensivity of the numerical model of the Arctic-North Atlantic Ocean to the way of the diffusion parametrization: standard horizontal/vertical diffusion (HOR), isopycnal mixing scheme, with the Cox approach (ISO); and the Gent-McWilliams parametrization (GM). As a result…
A flow of incompressible viscous two-velocity fluids for the case of pressure equilibrium of phases at constant saturation of substances is described with the help of scalar functions. A system of differential equations for these functions is obtained. An example illustrating this method is…
Based on the numerical modeling, a possibility of the existence of the temperature anomalies in the Laptev Sea shelf areas due to the heat sink of the Lena River is investigated. To determine the heat flow at the outlet to the sea, the linear regression formulas to connect the river water…
This paper presents the results of modeling of the river runoff for the Ob-Irtysh basin using the climate runoff model in the XXth and XXIst centuries. This model is a linear reservoir one. The flow of water is divided into the surface runoff, the river flow and the groundwater flow. The model takes…
Results of the mathematical modeling of the dynamics of the submarine permafrost and the methane hydrate stability zone in the sediment of the East Siberian Arctic shelf are presented. The thickness of permafrost on the shelf is 175—320 m for the geothermal heat flux 60 mW/m according to the results…
The paper discusses the results of preliminary experiments to test the quality of the data assimilation procedure based on the use of ensemble Kalman filter applied to the basin of the Laptev Sea in the vicinity of the Lena Delta. As perturbation we used the river runoff closure, and as the true…
A model for reconstructing the surface concentration of a heavy non-homogeneous substance transferred into the atmosphere is proposed. The model is used to simulate the snow surface contamination by benzopyrene in the vicinity of Power Plant-3 in the city of Barnaul. The wind rotation effects in the…
This paper describes a new model of the hydrodynamic system consisting of the Lena River delta and the Laptev Sea shelf zone. The description of a complex fluvial system with many channels, watercourses and estuarine areas is based on the numerical solution of the Saint—Venant equations. The method…
The results of field studies of the snow cover pollution by inorganic dust around an industrial enterprise for the cement production in the winter season of 2012-2013 are discussed. Based on the field fallout, the numerical reconstruction has shown the existence of stable quantitative regularities…