IMOS SST: Multi-Sensor Sea Surface Temperature for Australia Region

A 72-hour multi-sensor sea surface temperature composite for a single period, derived from VIIRS and AVHRR satellite sensors. The data is provided by the Australian Ocean Data Network as a 0.02-degree resolution grid covering 70E to 170W, 20N to 70S. Each grid cell contains a 72-hour average of the highest quality SSTs, weighted by sensor overlap area.

Use Cases

• Modeling regional ocean heat content based on multi-sensor sea surface temperature composites.
• Validating satellite-derived SST algorithms using the quality levels and Sensor Specific Error Statistics (SSES) described.
• Analyzing diurnal warming effects based on the day and night time observations with different wind speed thresholds.
• Studying spatial SST patterns in the Australian region using the 0.02-degree cylindrical equidistant projected map.

Strengths

• Integrates observations from multiple satellite sensors (VIIRS on Suomi-NPP/JPSS and AVHRR on NOAA/Metop).
• Provides a spatially consistent 0.02-degree resolution grid over a large region (70E to 170W, 20N to 70S).
• Applies quality control using original ACSPO quality levels and Sensor Specific Error Statistics (SSES).
• Derives a foundation SST (SSTfnd) by applying sensor-specific adjustments (e.g., +0.17 degC for NOAA AVHRR).

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.
• Represents a single 72-hour composite period; temporal coverage for time-series analysis is not specified.

Provenance

Source

Australian Ocean Data Network (AODN), likely via the Integrated Marine Observing System (IMOS).

Collection Method

Derived from satellite retrievals, composited, and remapped as described in Griffin et al. (2017).

Time Range

Covers a single 72-hour period; specific dates are not provided in the input.

Freshness

Last updated 2026-07-10 12:17:45.945034; freshness should be verified.

Geography

Covers the region 70E to 170W, 20N to 70S, which includes waters around Australia and the South Pacific.