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Registration Number

0213U004722, 0113U001598 , R & D reports

Title

The research of solar activity influence on hydrometeorological and hydrophysical processes in Black sea region.

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Head

Ivanov Vitaly Oleksandrovich,

Registration Date

25-12-2013

Organization

Marine Hydrophysical Institute NAS of Ukraine

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The works on revealing of statistical connection of solar activity indexes with large-scale atmosphere circulation index in the Atlantic-European region - index of North Atlantic oscillation (NAO) are carried out. The reaction of the ground wind fields in Black Sea region on oscillation of solar activity characteristics is revealed. The spatial structure of water temperature field in Black Sea during a winter season depending on paired relationship of solar activity cycles is investigated. The connections of characteristics of Black Sea level variability with the solar activity indexes are estimated. During performance of works estimations of NAO index interannual variability in periods of solar activity's pair and unpaired cycles are received. Shown that NAO index in period of solar activity's pair cycle takes over great values, than in period of unpaired cycle. In NAO index seasonal variability its maximum positive values are observed by winter of pair cycle of solar activity and the maximum negative values in the winter of unpaired cycle. During other seasons of year in both pair and unpaired cycles, NAO index variates within climatic norm. The features of spatial structure of ground wind velocity field, water temperature anomalies on the surface of Black Sea and a cold intermediate layer (CIL) during a cold season of pair and unpaired cycles are revealed. Shown that general character of temperature changes in Black Sea for the 100-year-old period of observations represents cyclic process with general tendency to warming. The tendency to more cooling of sea surface and the reinforced updating of waters CIL in pair cycles of solar activity and to opposite process in unpaired cycles is revealed. An exception of the general tendency is the unpaired cycle 1977-1986 in which middle the continuance of the considerable cooling of the sea active layer has begun. The analysis of the interannual variability of solar radiation heat and wind fields vorticity has shown that in cold winters cyclonic wind vorticity increases, in warm winters - decreases. It is revealed that currents intensity in Black Sea basin is essentially connect to quantity of the short-wave solar radiation arriving in region.

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А.Є. Чехлан
А.Н. Жуков
А.О. Кубряков
А.О. Сізов
В.М. Бєлокопитов
М.А, Крашенинникова
М.В. Шокуров
Скрипальова О.О.