**Department of Modeling the Sea and Atmosphere Dynamics**

**Demetrashvili Demuri** – Doctor of Sciences in Physics and Mathematics – Head of the Department

**Surmava Aleksandre** – Doctor of Sciences in Physics and Mathematics, Chief Researcher

**Kvaratskhelia Diana ** – Doctor in Physics and Mathematics, Senior Researcher

**Kukhalashvili Vepkhia** – Postgraduate, Researcher

**Gvilava Mamuka ** – Postgraduate in Physics and Mathematics, Specialist

In 1989 under the guiding of Doctor of Sciences in Physics and Mathematics, Avtandil Kordzadze the Department of Sea Dynamics (later, the Department of Mathematical Modeling of Geophysical Processes in the Sea and Atmosphere; at present – the Department of Modeling the Sea and Atmosphere Dynamics) was founded at the Institute of Geophysics of Georgian Academy of Sciences, which laid the base for a relatively new direction at the Institute – studying hydrothermodynamic and ecological processes in the Black Sea and atmosphere on the basis of mathematical modeling. Unfortunately, the foundation of the Department and its functioning coincided with a period of major cataclysms, which had a significant negative impact on the social and economic state of our country. Despite the fact that it was very difficult to carry out scientific activities in that situation, scientific and research work was not interrupted at the Department and at present these studies and scientific publications of the Department are known outside our country.

Fig.1. Department staff: sitting – Doctor of Sciences in Physics and Mathematics, Demuri Demetrashvili, Doctor of Sciences in Physics and Mathematics, Diana Kvaratskhelia; standing from left to right: Postgraduate in Physics and Mathematics, Mamuka Gvilava, Doctor of Sciences in Physics and Mathematics, Aleksandre Surmava, Master of Science Vepkhia Kukhalasvili.

Currently, the Department carries out researches in following main directions:

**Mathematical modeling of dynamic processes in the Black Sea;****Development of advanced versions of the regional forecasting system for the Georgian water area of the Black Sea;****Studies of the hydro and thermodynamic processes in the atmosphere of the Caucasus region on the basis of mathematical modeling;****Studies of the peculiarities of distribution of anthropogenic substances in the natural environment (sea, atmosphere, soil) on the basis of mathematical modeling;**

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Within the framework of these directions a number of mathematical models have been developed in the department, in particular:

**Barotropic model of the Black Sea dynamics;****Baroclinic model of the Black Sea dynamics with****10****and 5 km space resolution****;****High-resolution****regional****model of the Black Sea dynamics fo****r the easternmost area of the Black Sea (with grid step 1 km)****;****N****onstationary hydrodynamic****l****imited area models of****regional****and meso-scale atmospheric processes;****2D and 3D mathematical models of spreading nonconservative polluting substances in the Black Sea;****Mathematical method of determining****the****pollution source****location****in the Black Sea.****Nonstationary numerical models of spreading of anthropogenic substances in the atmosphere, rivers and soil;**

**The structure and theoretical basis of the mathematical model of the Black Sea-atmosphere-soil as a unifom hydro and thermodynamic system are elaborated.**

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