Summary
Nutrient concentrations were normal for the season in all areas. After the latest inflow to the Baltic in January, the deep water of the Arkona Basin, Bornholm Basin and the Hanö Bight was now well oxygenated. The inflow observed in the southeast of the Baltic Proper in April has now reached and oxygenated the deep water east of Gotland (BY 10 and BY 15) although hydrogen sulphide still occupied intermediate layers. Hydrogen sulphide was also present in the northeast and west Gotland Basins.