GHRSST Level 4 MW_OI Global Foundation Sea Surface Temperature analysis version 5.1 from R

A daily global sea surface temperature analysis on a 0.25-degree grid produced by Remote Sensing Systems for the GHRSST project. The product uses optimal interpolation from multiple microwave satellite sensors, including TRMM TMI, AMSR-E, WindSat, GMI, and AMSR2, leveraging their through-cloud measurement capabilities. Version 5.1, updated in March 2026, addresses processing deficiencies from the previous version and uses updated sensor-specific error statistics.

Use Cases

• Modeling ocean-atmosphere heat exchange based on daily global SST fields.
• Studying climate variability and trends using through-cloud microwave SST measurements.
• Validating or complementing infrared-based SST products in cloudy regions.
• Assimilating SST data into numerical weather prediction and ocean circulation models.

Strengths

• Provides daily global coverage on a consistent 0.25-degree grid.
• Integrates data from five distinct microwave satellite sensors for temporal continuity.
• Version 5.1 addresses deficiencies from the previous version and uses updated sensor error statistics.
• Microwave sensors provide SST measurements through cloud cover, a capability not available from infrared sensors.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Row count and file size are unknown, which may limit suitability assessment.
• The analysis does not incorporate in situ data from sources like drifting buoys.

Provenance

Source

Remote Sensing Systems (REMSS) for the Group for High Resolution Sea Surface Temperature (GHRSST) project.

Collection Method

Optimal interpolation of satellite microwave radiometer data from TRMM TMI, AMSR-E, WindSat, GMI, and AMSR2.

Time Range

Daily production; specific temporal coverage is not stated.

Freshness

Last updated 2026-03-13 02:32:32.597060; freshness should be verified.

Geography

Global coverage.