The Information Telecommunication System "Solaris" was created to solve the actual problems of navigation. The system allows analyzing an operational local and synoptic hydrometeorological situation on a vessel route to issue recommendations to navigators about the optimization of the movement from the point of view for the safety of navigation and economic efficiency. ITS "Solaris" represents a combination of two hardware-software complexes one of which is fitted on the vessel, and the other one ashore. The ship complex is based on the use of regular ship radar station to which AD converter and the computer with the software is connected. The coastal complex is a server that collects, processes, analyzes stores and transmits satellite and ship information. To operate the system on a particular ship the proposed model calculates the speed of the vessel, depending on the direction and speed of meteorological parameters such as wind, waves and currents, of ice conditions. The system can be used in the initial planning of the route on the basis of operational and climatic data according to the seasonal variability of the weather conditions. The created system improves the safety of navigation and increase economic efficiency.

No abstract

No abstract

The validity of satellite regional algorithms depends on variability of optical properties of coastal waters and especially on relationships between concentrations of chlorophyll-a (chlA) and dissolved organic matter (DOM). The subject of the current researches is the role of characteristics of clusters in chlA -DOM scatter plot while developing of the regional biooptical algorithm. Regular undersatellite shipboard measurements of chlorophyll-a and DOM concentrations by means of contemporary laser fluorometer obtained in the various regions of Peter the Great Bay from 2007 to 2010 were used for the analysis.

New results on the analysis of methane distribution in the troposphere over the Arctic shelf of Eurasia using the Atmospheric InfraRed Sounder (AIRS) are reported. The main trends in variability of the methane content (increase), temperature (AIRS, fluctuations without a distinctly manifested trend), and ice coverage for the period 2010–2022 have been revealed. Conclusions were made about the difference in the distributions of atmospheric methane over the western and eastern Eurasian Arctic. These parts were divided according to the zone of permeability, which was formed by a seismically active lineament of Gakkel Ridge. It has been shown that hydrometeorological parameters, including temperature and ice formation, are probably not the main factors for increasing the methane content in the atmosphere of the Eurasian Arctic shelf. The increase in the methane content and the methane distribution are associated with natural regional factors that are widespread over vast areas. These factors include, first of all, geological structures: oil and gas basins and tectonically fragmentated zones of the lithosphere with a different type of degassing.