Cruise report from R/V Argos week 8, 2005

Summary

Very high surface phosphate concentrations were measured in the Baltic Proper. Silicate concentrations were also enhanced there, while levels of nitrogen compounds were normal. Nutrient concentrations in the Skagerrak-Kattegat area were normal or almost normal. The spring bloom in the Skagerrak-Kattegat area was just starting. In the Baltic Proper oxygen concentrations below 2 ml/l were found at depths exceeding 70 to 100 metres. Hydrogen sulphide was found in the bottom waters of the Gotland Deep(BY15), Landsort Deep (BY31)and Norrköping Deep(BY32).