| Summary: | Due to its location at or near the oceanic polar front, the Iceland Sea is an area particularly sensitive to climatic changes. In warm years a strong influx of Atlantic water from the Irminger Sea can be traced all along the North Iceland shelf area. This inflow is mainly determined by past meteorological conditions at the west and north coasts of Ireland. In periods when the ice belt along the east cost of Greenland is relatively narrow, the surface layers between Iceland and Jan Mayen consist of arctic water with practically no polar component. Conversely, in cold periods an appreciable proportion of cold, low-salinity polar water is found in this area, and large parts of the North Icelandic shelf area may be covered with drift ice. Sea surface temperatures north of Iceland, especially in spring, are closely correlated to the frequency and extension of drift ice.
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