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 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

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.

Daily updated and quality-controlled daily means of sea surface temperatures of the North Sea and Baltic Sea, derived from measurements of the Advanced Very High Resolution Radiometer Sensor (AVHRR sensor) during flyovers of different polar-orbiting satellites on the corresponding day.