IMOS Multi-Sensor Sea Surface Temperature, 1-Month Nighttime Averages for Australia Region

IMOS provides a Level-3 Super-collated (L3S) sea surface skin temperature product derived from VIIRS and AVHRR satellite sensors. The dataset contains 1-month averages of consecutive night-time observations, gridded at 0.02-degree resolution over a region spanning 70E to 170W and 20N to 70S. It is produced by the Australian Ocean Data Network and was last updated on 2026-07-13.

Use Cases

• Modeling regional ocean heat content based on multi-sensor, night-time sea surface temperature averages.
• Validating satellite-derived SST algorithms using the quality levels and Sensor Specific Error Statistics (SSES) described in the methodology.
• Analyzing spatial temperature patterns in the Australian region based on the 0.02-degree gridded composite data.
• Studying diurnal temperature cycle effects by comparing this night-time product with daytime observations.

Strengths

• Data is derived from multiple satellite sensors (VIIRS on Suomi-NPP/JPSS and AVHRR on NOAA/Metop), suggesting cross-validation potential.
• Product uses a defined quality remapping procedure based on ACSPO L3U quality levels and Sensor Specific Error Statistics (SSES) as referenced.
• Spatial coverage is explicitly defined as a 0.02-degree grid over the region 70E to 170W, 20N to 70S.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic/temporal bias inherent to data_gov_au and the specific satellite overpass times.

Provenance

Source

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

Collection Method

Derived from sea surface temperature retrievals from VIIRS and AVHRR sensors on polar-orbiting satellites, composited into monthly night-time averages.

Time Range

Temporal coverage is for 1-month periods, but specific dates are not provided in the input.

Freshness

Last updated 2026-07-13 20:56:43.445248; freshness should be verified.

Geography

Region 70E to 170W, 20N to 70S (encompassing waters around Australia and the South Pacific).