How the Hydrometeorological Parameters of the Curonian Lagoon Changed during Two Periods of Standard Climate Normal (1961–1990 and 1991–2020)

Coastal lagoons are recognized as specific and complex water bodies vulnerable to climate change. The focus of this study was the Curonian Lagoon, largest freshwater lagoon in Baltic Sea whole Europe. changes hydrometeorological parameters over six decades were evaluated using two periods climatological standard normal: most recent 30-year period, i.e., 1991–2020, period 1961–1990. Before statistical analysis, data checked for homogeneity, breakpoints determined by Pettitt Buishand tests. Mann–Kendall test used determine trends series. analysis revealed substantial during normal periods. An exceptionally high rise air temperature detected. A considerable increase identified level duration permanent ice cover on declined, did thickness, whereas breakup advanced. downward trend wind speed detected, while change precipitation had a positive direction. Air temperatures highly correlated with Arctic Oscillation (AO) index Scandinavia pattern (SCAND).