IMOS SST L3S: Multi-Sensor Sea Surface Temperature for the Southern Ocean

Southern Ocean sea surface temperature data for a single 24-hour period, derived from VIIRS and AVHRR satellite sensors. The product is a 0.02-degree resolution map covering 3E to 158W and 27S to 78S, representing a 24-hour average of the highest quality observations. It is provided by the Australian Ocean Data Network through the Integrated Marine Observing System (IMOS).

Use Cases

• Modeling ocean heat content and climate patterns based on multi-sensor sea surface temperature observations.
• Analyzing daily sea surface temperature variability in the Southern Ocean based on the 0.02-degree resolution grid.
• Validating satellite-derived SST algorithms based on the described quality level remapping and sensor-specific error statistics.
• Studying the impact of surface wind speed on SST retrievals based on the described day and night wind speed thresholds.

Strengths

• Data is derived from multiple satellite sensors (VIIRS on Suomi-NPP/JPSS and AVHRR on NOAA/Metop), likely increasing spatial and temporal coverage.
• Product uses a specific quality control process, rejecting observations with low surface wind speeds (<6 m/s by day and <2 m/s at night).
• Provides a high-resolution (0.02-degree) gridded map over a defined Southern Ocean region (3E to 158W, 27S to 78S).

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network, Integrated Marine Observing System (IMOS).

Collection Method

Derived from sea surface temperature retrievals from VIIRS and AVHRR sensors on polar-orbiting satellites, composited into a daily average.

Time Range

Covers a single 24-hour period; specific date is not stated in the input.

Freshness

Last updated 2026-05-05 16:17:54.812087; freshness should be verified.

Geography

Southern Ocean region from 3E to 158W and 27S to 78S.