Monthly spatial mean sea surface temperature of the North Sea (boundaries: 48.65°N - 62°N, 10.22°W - 16°E) from all available NOAA/Metop satellite overflights of the respective month. The sea surface temperatures are derived from AVHRR data with a spatial resolution of 1.1 km. Since 1990, these have been processed and manually quality-checked in the M14 department of the BSH.

Monthly mean (average of weekly analyses associated with respective month) of sea-surface temperature in the German Bight as spatial mean over a sub-sample of grid-cells (see geographical boundaries) of the coarse resolution analysis grid based on a Lambert azimuthal equal-area projection with center point at 56°N, 4°E and a spatial resolution of 20 nautical miles (24x30 grid cells with corner grid-points at 60,81°N, -5,31°E; 60,81°N, 10,36°E; 51,17°N, -2,13°E; 51,17°N, 10,06°E); base data is the weekly SST-analysis performed in division M21 at BSH, that is a manual analysis based on in-situ observations for the period 1968-1994, that has been digitized, as well as the "blended SST-analysis", that is a product combining in-situ observations and satellite retrievals from 1995 onwards

Monthly spatial mean sea surface temperature of the Baltic Sea (boundaries: 53°N - 66°N, 9°E - 31°E) from all available NOAA/Metop satellite overflights of the respective month. The sea surface temperatures are derived from AVHRR data with a spatial resolution of 1.1 km. Since 1990, these have been processed and manually quality-checked in the M14 department of the BSH.

Monthly mean (average of weekly analyses associated with respective month) of sea-surface temperature in the North Sea as spatial mean over grid-cells of the coarse resolution analysis grid based on a Lambert azimuthal equal-area projection with center point at 56°N, 4°E and a spatial resolution of 20 nautical miles (24x30 grid cells with corner grid-points at 60,81°N, -5,31°E; 60,81°N, 10,36°E; 51,17°N, -2,13°E; 51,17°N, 10,06°E); base data is the weekly SST-analysis performed in division M21 at BSH, that is a manual analysis based on in-situ observations for the period 1968-1994, that has been digitized, as well as the "blended SST-analysis", that is a product combining in-situ observations and satellite retrievals from 1995 onwards