GHRSST Daily Sea Surface Temperature Analysis for North and Baltic Seas

Daily sea surface temperature analysis from 2016 to 2026 for the North and Baltic Seas, produced operationally by the Danish Meteorological Institute. The dataset merges nighttime skin and subskin temperature observations from multiple satellite sensors using an optimal interpolation method on a 0.03-degree grid. It is a GHRSST Level 4 product hosted by NOAA and NASA.

Use Cases

• Analyzing daily SST variability and trends in the North and Baltic Seas using the interpolated temperature field.
• Validating regional ocean circulation models against a multi-sensor, satellite-derived SST analysis.
• Studying the impact of sea ice on surface temperatures by utilizing the integrated ice mask from Swedish and Finnish services.
• Correlating SST patterns with local meteorological data for coastal and marine ecosystem studies.

Strengths

• Integrates observations from five satellite sensors (AVHRR, AATSR, SEVIRI, AMSRE, MODIS) for a multi-instrument analysis.
• Provides high spatial resolution on a 0.03-degree regional grid for detailed study.
• Operational daily production ensures consistent temporal coverage for time-series analysis.

Limitations

• Key metadata such as row count, column names, and exact file size are unavailable from all sources.
• A conflict exists in the last updated date, with one source reporting 2016 and another reporting 2026.
• The dataset is limited to nighttime satellite observations, excluding daytime measurements.

Provenance

Source

Danish Meteorological Institute (DMI), under the Group for High Resolution Sea Surface Temperature (GHRSST).

Collection Method

Optimal interpolation (OI) of GHRSST Level 2P skin and subskin SST observations from multiple satellite sensors.

Time Range

2016 to 2026

Freshness

2026-03-05 23:34:01.843205

Geography

North Sea and Baltic Sea region.