Figure 7.3.3. Time series of deep-water temperature in the Norwegian sector of the North Sea from 1950 to 2021. Temperature observations from the Skagerrak (Torungen-Hirtshals transect) and the northern North Sea (Utsira-Orkney transect) are retrieved from IMR’s data base, arranged as monthly values and transferred to anomalies with 1961-90 as the reference period. The black line denotes the monthly data that are available, the blue line is filled in for missing data using an extrapolation method in order to create a lowpass-filtered red line with a one-year long cut-off period.
