Long-time variability of hydro-meteorological fields in the eastern part of Gdansk basin

On the base of the data of seasonal surveys (May 2003-November 2011) carried out during complex ecological monitoring of offshore oilfield Kravtsovskoye (D6), the data from automatic hydro-meteorological station MiniKrams-4 (January 2004-December 2011) seated on the offshore ice-resistant fixed platform Lukoil-Kaliningradmorneft and the data measured in Baltiysk sity, Svetlogorsk sity, P-1, the seasonal and interannual variability of follow parameters on the east of Gdansk Basin were investigated: water salinity S and temperature T_w, air temperature T_a, dew-point temperature T_d, atmospheric pressure on sea level P₀ and wind speed W. It was shown that seasonal trend of T_w, T_a, T_d and W is characterized by annual harmonic, in seasonal trend of S half year harmonic becomes pronounced, and for P₀ half year harmonic becomes prevalent. Interannual variability of hydro-meteo elements of the region has cyclical character. Quasi two years, 3- and 5-years periodicities were marked off, and it is proposed of 7-8-, 10-12-, 19-, 22-24-years and century cycles.