Circulation and Contaminant Fluxes in the North Sea

1 Introduction.- 2 Field Data.- 2.1 Seasonal and Interannual Variability in the Atmosphere and in the Sea.- 2.2 Ecological Situation in the North Sea During Spring and Winter 1986/87.- 2.3 Large-Scale Distribution of Contaminants in Spring 1986 and Winter 1986/87.- 2.4 Atmospheric Transport of Contaminants, Their Ambient Concentration and Input into the North Sea.- 2.5 Local Studies in the German Bight During Winter/Spring 1988/89.- 2.6 Measurements of Suspended Matter Dynamics in the German Bight.- 2.7 Local Variability of Surface Currents Based on HF-Radar Measurements.- 2.8 Background Concentrations for Metals in the North Sea: Sediment, Water, Mussels and Atmosphere.- 3 Model Experiments.- 3.1 Mean and Local Transport in Air.- 3.2 Currents and Transport in Water.- 3.3 Phytoplankton Modelling in the Central North Sea During ZISCH 1986.- 4 Interdisciplinary Evaluation of Field and Model Data.- 4.1 Evaluation of the North Sea Joining insitu and Remotely Sensed Data with Model Results.- 4.2 The influence of Weather and Climate.- 4.3 Seasonal Correlation Between Nutrients and Contaminants.- 4.4 Effects of Abiotic Processes on the Fate of Contaminants.- 4.5 Bioaccumulation and Effects of Plankton and Benthos on the Fate of Contaminants.- 4.6 Combined Effects of Abiotic and Biotic Factors on Heavy Metal Fluxes.- 4.7 On the Reliability of our North Sea Assessment.- 5 A Composite View of the North Sea Ecosystem and Future Research Needs.- 5 A Composite View of the North Sea Ecosystem and Future Research Needs.