IMOS Himawari-8 Nighttime Sea Surface Temperature for Australia

IMOS provides a reprocessed, regional sea surface temperature (SST) dataset derived from the Himawari-8 satellite's AHI imager. The Bureau of Meteorology produces this GHRSST-compliant Level 3 collated product, compositing hourly nighttime SSTskin retrievals onto a 0.02-degree grid over the Australasian domain (70E to 190E, 70S to 20N). The data is processed using a Radiative Transfer Model and Bayesian cloud clearing method, with the last update recorded as 2026-07-10.

Use Cases

• Modeling ocean heat content and climate patterns based on high-resolution nighttime sea surface temperature data.
• Analyzing diurnal warming cycles by comparing this nighttime SST product with daytime observations.
• Validating ocean circulation and climate models using the spatially consistent, reprocessed SST fields.
• Monitoring marine heatwaves and thermal anomalies in the Australasian region.

Strengths

• Data is reprocessed in delayed mode, which likely indicates quality-controlled, stable records.
• Product is compliant with the international GHRSST Data Specification version 2 standard.
• Spatial resolution is specified as a 0.02-degree grid over a defined regional domain.
• Processing methodology is described, involving a Radiative Transfer Model and Bayesian cloud clearing.

Limitations

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

Provenance

Source

Australian Ocean Data Network, produced by the Bureau of Meteorology for the Integrated Marine Observing System (IMOS).

Collection Method

Satellite remote sensing retrievals from the AHI imager on the Himawari-8 satellite, processed using the ESA CCI SST code from the University of Reading.

Time Range

Temporal coverage is not explicitly stated, but the product is described as being produced in real time and delayed mode.

Freshness

Last updated 2026-07-10 01:02:27.742747; freshness should be verified.

Geography

Australasian domain spanning 70E to 190E longitude and 70S to 20N latitude.