General peculiarities of long-term fluctuations of the Baltic Sea and the Kurshiu Marios lagoon water level in the Region of Lithuania

One of the indicators of the climate change is water level. Causes of the rise in water level are related with more frequent advection of warm and dry water masses during the cold period, with global atmospheric changes in circulation, with stronger air movement from the west, with rising air temperature, which causes rising water temperature. Rapid rise in water level observed during the last decades of the 20^th century, which is directly associated with the problems of shore destruction, land flooding, violation of ecological balance is a matter of great concern.