Tengiz Tsintsadze

2014-2018 data on strong wind cases (V≥15 m/s) are considered. The climatic characteristics of strong winds, such as the number of days, wind speed, and direction, are studied for a five-year study period. Also, strong wind distribution areas are defined according to the municipalities. Some cases of damage caused by strong winds in 2014-2018 are described. Based on the available data a geoinformation map of the distribution of strong winds in the regions of Georgia are compiled.

The renewable solar, wind and bio energies became more and more actual and applicable in the World. Many studies have been devoted to study their application ways and develop equipments and devices to produce energy supply. The research of their possible energy potential is crucial for energy sector and state economics that are preconditions for sustainable development. The application of wind energy is important for Georgia. However the wind phenomenon is still under persistent scientific investigation its nature is still unknown. There are many reasons of its genesis. After NASA’s Earth Observation Mission program many new data has been gathered that clarify many phenomena from different point of view. The real drivers of climate are the Sun’s insulation (light and heat), its magnetic flux, and the relative position and orientation of the Earth to the Sun. Geomagnetic storm is a major disturbance of Earth's magnetosphere that occurs when there is a very efficient exchange of energy from the solar wind into the space environment surrounding Earth. These storms result from variations in the solar wind that produces major changes in the currents, plasmas, and fields in Earth’s magnetosphere. The largest storms that result from these conditions are associated with solar coronal mass ejections (CMEs) where a billion tons or so of plasma from the sun, with its embedded magnetic field, arrives at Earth. CMEs typically take several days to arrive at Earth. The correlation between geomagnetic storms and meteorological elements (wind, pressure, temperature) for Georgian region using meteorological observation and NASA’s Solar Dynamics Observatory and NOAA Space Weather Prediction Center data has been conducted. The results show that there exist dependence between weather parameters and income radiation. Especially important is wind parameter variability investigation. Such research hasn’t been carried out yet in Georgia and is important for space weather researches.. 

Analysis of scientific and practical works on the artificial impact on the weather in Georgia in the past and at the present time (combating hailstorms, regulating the thunderstorm activity of clouds, artificial precipitation, etc.). The prospects for further development of these works are discussed.

The article provides mathematical model for changing and calculating glacial nutrition rivers runoff (warm period) related to climate change, estimating based on climatic conditions (precipitation, air temperature and total discharge), as well as analyzing basin K - discharge coefficient.

The extremely heavy precipitation event probability is assessed on the basis of monthly weather records. Case study is conducted for Georgia’s Black Sea coastal region. Risk calculated values are verified applying data on observed patterns of precipitation.

Contemporary state of the dynamics of hazardous hydrometeorological processes and methods of protection from them is analyzed. The rise in economic and physical damage from these processes in Georgia is outlined. Important role of Georgian scientists in the continuation of these processes investigation is indicated. Successful results obtained in the past in Georgia in operational activities on precipitation enhancement, hail suppression, cloud lightning activity modification and prevention of atmospheric processes modification operational activities, suspended more than two decades ago, is proposed, starting first with the restoration of hail protection works in the Kakheti Region

The analysis of the long-standing joint operations of the institutes of Geophysics and Hydrometeorology in the field of atmospheric research in Georgia is represented. The important results, obtained during studies of air pollution, atmospheric electricity, thunderstorm and hail processes, climate change, radar meteorology, active actions on the atmospheric processes, the risks of natural catastrophes, bioclimatic resources of Georgia, etc. are noted. It is intended to continue the indicated joint studies, and to also combine efforts for the solution of the new problems of scientific and applied value (the simulation of atmospheric processes, the development of recommendations on the adaptation to expected climate change, weather modification, the creation of the bioclimatic passport of the health resort and tourist zones of Georgia, etc.).

The dynamics of glaciers of the Caucasus Range based upon the observational data 1850-1890, 1910-1933, 1960-1965, 1970-1995 and 2002-2005 is studied. In most cases, the linear trend of decreasing the area of ​​glaciers is revealed. The rate of degradation of glaciers is assessed. According to climate forecast in case of maintaining the intensity and the current global warming the Caucasus Range would be completely free of ice to the 2150-2160

The work gives the assessment of the possible cumulative impact of the three water reservoirs of the hydroelectric power plant series present or designed in the river Enguri gorge on the environmental micro-climate. The spatial scales and intensity of the impact of Jvari, Khudon and Nenskra water reservoirs on the air temperature and humidity are identified by using the analytical solution of a two-dimensional stationary mathematical model of turbulent heat exchange and moisture circulation on the background of the horizontal wind given in the surface atmosphere. Assessment of the cumulative effect of the water reservoirs on the environment is made by superpositioningof the analytical solutions gained for each of the water reservoirs, i.e. the values of the impact effects of the three water reservoirs are summed up at every point of space. The possible cumulative impact of the series of water reservoirs on the regimes of wind and atmospheric precipitations is also assessed.  The gained results suggest that any significant change in temperature or humidity may occur only in up to 5 km from the water reservoir coastline, in the wind direction. The impact of the series of the water reservoirs on the atmospheric precipitations and wind values is insignifican Thus, no significant changes in the climate of the region are expected as a result of the cumulative impact of the series of the water reservoirs.

The seismic and hydrometeorological risks of the possible damage to the designed Nenskra hydroelectric power plant dam are considered. The dam stability criterion is gained, and its analysis is used to show the insignificant role of hydrometeorological processes (strong rain, flashflood, flood) as compared to the seismic risk. The fault line running in the given region may impact the dam stability. It is characterized by earthquakes with the magnitude of M=5; 2,5and 10% probability for a 50-year-long period.  By admitting the total disintegration of the dam, the peak discharges of the originated flashflood wave are calculated on the fault site and along the river transit areas. For instance, the wave discharge at KHUDONHESI (Khudon hydroelectric power plant) dam may reach the value of 7x10⁴m³/sec. The time taken by the flashflood to cover the distance from the Nenskra dam to Khudon dam is approximately 1 hr. The work states that such a scenario of events may have an extremely negative impact on the beds of the Nenskra and Enguri river beds and settled areas near them, and Khudon hydroelectric power plant dam and water reservoir will be under the hazard of damage

The results and scale are presented of the study on the use of numerical sequence function for the quantitative assessment of extreme glacial and hydrological characteristics for any territory

Results of atmospheric and soil drought development, also complex evaluation of drought intensity on the territory of Georgia are discussed on the basis of the method developed in the Scientific-Research Institute of Agriculture of Russia. Data of observations conducted by 15 weather stations in 1961-1986 are applied. Schematic maps of climatic zoning of the territory of Georgia according to evaluation of drought intensity for the 4 months of the warm period (May-August) are developed.

The work deals with a possibility of calculation of the characteristics of sources of water resources (precipitation, river runoffs and glacier accumulation-ablation) based on the moisture circulation parameters, under conditions of suspended hydrometeorological observations. The calculations of river water resources’ parameters are given for warm, cold seasons and annual periods. For the non-associated and associated series, the results are positive, provision is within 80 to 98 percent

Doctoral Thesis Referee

Master Theses Supervisor

Doctoral Thesis Supervisor/Co-supervisor

Scientific editor of monographs in foreign languages

Scientific editor of a monograph in Georgian

Editor-in-Chief of a peer-reviewed or professional journal / proceedings

Review of a scientific professional journal / proceedings

Member of the editorial board of a peer-reviewed scientific or professional journal / proceedings

Participation in a project / grant funded by an international organization

Participation in a project / grant funded from the state budget

Patent authorship

Membership of the Georgian National Academy of Science or Georgian Academy of Agricultural Sciences

Membership of an international professional organization

Membership of the Conference Organizing / Program Committee

National Award / Sectoral Award, Order, Medal, etc.

Honorary title

Monograph

Handbook

Research articles in high impact factor and local Scientific Journals

Publication in Scientific Conference Proceedings Indexed in Web of Science and Scopus