GHRSST Level 4 REMO_OI_SST_5km Regional Foundation Sea Surface Temperature Analysis (GDS v

A daily, 0.05-degree resolution (approximately 5.5 km) sea surface temperature analysis for the region between 45°S to 15°N and 70°W to 15°W. The Oceanographic Modeling and Observation Network (REMO) at LMA/UFRJ produces this Level 4 product using a Barnes optimal interpolation technique on blended Advanced Very High Resolution Radiometer (AVHRR) and Tropical Rainfall Measuring Mission Microwave Imager (TMI) data. The analysis is validated by in situ measurements from eleven buoys of the PIRATA array.

Use Cases

• Modeling ocean-atmosphere heat exchange based on daily, high-resolution sea surface temperature fields.
• Studying regional climate variability in the Tropical Atlantic based on the validated, cloud-free SST product.
• Calibrating and validating satellite-derived SST algorithms based on the blended infrared and microwave data sources.
• Analyzing mesoscale ocean features like eddies and fronts based on the 5.5 km spatial resolution.

Strengths

• Spatial resolution of approximately 5.5 km (0.05-degree grid) for detailed regional analysis.
• Blended product combining high-resolution infrared AVHRR data with cloud-penetrating microwave TMI data.
• Validation against in situ measurements from eleven PIRATA buoy stations.
• Daily production on an operational basis provides regular temporal coverage.

Limitations

• Geographic coverage is limited to the Tropical Atlantic region (45°S to 15°N, 70°W to 15°W).
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.

Provenance

Source

Oceanographic Modeling and Observation Network (REMO) at Applied Meteorology Laboratory/Federal University of Rio de Janeiro (LMA/UFRJ), using data from NOAA AVHRR and NASA/JAXA TRMM satellites.

Collection Method

Barnes optimal interpolation technique applied to blended AVHRR and TMI satellite data.

Time Range

Daily production on an operational basis; specific start date is not provided.

Freshness

Last updated 2026-03-13 02:39:34.092891; freshness should be verified.

Geography

Tropical Atlantic region between latitudes 45°S and 15°N and longitudes 70°W and 15°W.