Summary
Surface water temperatures were higher than normal in the whole investigated area. Nutrients showed typical early autumn values, on the west coast as well as in the Baltic Proper. Oxygen concentrations below 2 ml/l were observed at depths exceeding 70 – 80 metres in the Baltic. Hydrogen sulphide was found deeper than 125 metres in the south eastern Gotland Basin and at depths greater than 150 - 160 metres in the north eastern Gotland Basin. In Western Gotland Basin hydrogen sulphide was found at depth exceeding 80 metre.