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Monthly, seasonal and annual CZCS (Coastal Zone Colour Scanner) composites are used to show periodic changes in patterns of ocean-surface colour field. In this investigation, the complete composite imagery of the Baltic Sea for the period 1979-86 is processed using a standard chlorophyll a algorithm. The data offer a considerable amount of useful information, in a region dominated largely by anthropogenic inputs from bordering countries. These inputs may be manifested as anomalous blooms or river plumes which are superimposed on the background contribution by natural processes. The composite imagery illustrates how these phenomena can be monitored in their monthly, seasonal and interannual variability, as well as their significance to the supply of optically active substances and the characterisation of the above mentioned anomalous events.

Additional information

Authors: DOWELL M, JRC Ispra (IT);HOEPFFNER N, JRC Ispra (IT)
Bibliographic Reference: Paper presented: European Geophysical Society, XXth General Assembly, Hamburg (DE), April 3-7, 1995
Availability: Available from (1) as Paper EN 38937 ORA
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