The Baltic Sea (53 to 66 deg. N; 10 to 30 deg. E)

Concentration of nitrogen species in the atmosphere; Ammonium and ammonia concentration parameters in water bodies; Chlorophyll pigment concentrations in water bodies; Dissolved oxygen parameters in the water column; Nitrate concentration parameters in the water column; Phosphate concentration parameters in the water column; Salinity of the water column; Dissolved total and organic nitrogen concentrations in the water column; Nitrite concentration parameters in the water column; Silicate concentration parameters in the water column; Dissolved total or organic phosphorus concentration in the water column; Temperature of the water column

The basic idea has been to make available data set on the conditions in the Baltic Sea and on forcing functions so that budget and models of the physics and biogeochemical cycles of organic matter and nutrients can be developed. This is being physically implemented by the Marine Ecosystem Modeling Group at the Department of Systems Ecology at the Stockholm University. The objective is to have a database that makes practical to perform calculations of total amounts of nutrients, nutrient budgets and trend analysis. The database includes hydrographical and chemical and meteorological measurements in the Baltic Sea that were performed by different research groups in Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia and Sweden. The data have been quality controlled.

Wulff & Rahm (1990) Large-scale Environmental Effects and Ecological Processes in the Baltic Sea',

Stockholm University, Department of Ecology, Environment and Plant Sciences
Svante Arrhenius Väg 21 A Frescati Backe
Stockholm

SE-106 91
Sweden