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The information received from satellites in infrared, visible and very high frequency ranges of a spectrum and recently from the operational 'The Previous Project' products, provides the basis for the implementation of methods in detecting the oceanic pelagic fishes in NRT. The open sea and oceanic fishery activities are related to a certain economical risk, which has increased after the enlargement of the economical zones of many coastal countries. The necessity to increase the fishing efficiency in the open sea has resulted in the development of methods of forecasting the abundant fish stock location. These methods are based on empirical relations between bio-productivity, physical and chemical condition of the marine environment. It is well known that the commercial fishery regions are located in zones of temperature fronts, boundaries of strong flows and in zones of divergence and convergence. The flow convergence produces a "mechanical" congestion of fodder organisms, and also, small-size fishes. In divergence and upwelling zones high concentrations of organic material is observed. Typical width of the frontal zones (significant for fishery), formed by physical and biological components of the ecosystem is ~ 1-10 km. It is problematic or impossible to describe such spatial features only by modeling, first of all due to the subgrid parameterization problem, and the unavailability of high space-time resolution atmospheric forcing. Spatial resolution of the modern Satellite sensors is ~1km (SeaWiFS, NOAA radiometers). But satellite data can't directly detect convergence or divergence areas. Combination of the two sources of information (MFSTEP products and satellite data) can make a progress in fish stock abundance zones detection and forecast. Application of the existing methodology and the software for the detection of the surface mesoscale structure (eddies, upwelling, like mushrooms structures, chains of eddies etc.); causing the formation of the divergence and convergence zones will be carried out. Investigations (on the base of MFSTEP and Satellite data) of the seasonal variability of such zones in the Central Mediterranean and of the influence of the convergence and divergence zones on chlorophyll concentration and primary production will be accomplished. On the first step we will carry out intercomparison of the position and dynamics of the frontal divergence and convergence zones from two data sources, and analyses of the relation of the thermal and biological (Chlorophyll) fronts for different mesoscale structures. The end-user n.6 responsible for the marine resource management, will use this end-user application in order to formulate procedures related to open sea resources management. |