Sources
It is composed primarily of outflow from the Baltic Sea (50% of freshwater input), flowing through the Skagerrak strait into the North Sea (10% freshwater input) circulation, joining with a fraction of the North Atlantic Drift (an extension of the Gulf Stream). The North Sea forms the third largest input of brackish-fresh water preceded by the inputs of fjords and rivers of Norway (40% of freshwater input). The Skagerrak area receives about 2100 m3/s of freshwater inflow, 75% of which is Baltic outflow, 15% is North Sea outflow and 10% is runoff from Norway and Sweden It is sometimes considered to be a continuation of the Baltic Current and is a major source of freshwater for the Barents Sea and Arctic Sea. It is formed by the branch of Atlantic current that flows into the North Sea and circulates through the North Sea basin along the Norwegian Trench picking up fresh and brackish water. It is a surface current and flows along the top 50–100 m of the sea surface.
As the Norwegian Coastal Current moves northward, North Atlantic Drift Water is mixed in, raising the salinity (see Salinity below).
Read more about this topic: Norwegian Current
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