H09-AHI-L3C-ACSPO-v2.90: Himawari-9 Satellite Sea Surface Temperature for Pacific Ocean

GHRSST L3C NOAA/ACSPO Himawari-09 AHI Pacific Ocean Region Sea Surface Temperature v2.90 dataset contains Subskin Sea Surface Temperature (SST) data produced by NOAA from the Advanced Himawari Imager on the Himawari-9 satellite. The dataset provides 24 hourly gridded files per day at a 0.02-degree resolution, with a daily volume of 0.7 GB, and includes sensor-specific error statistics for each pixel. Data is validated against in situ sources and is produced by the National Aeronautics and Space Administration, with files updated from Near Real-Time to Delayed Mode after approximately two months.

Use Cases

• Modeling ocean heat content and climate patterns based on hourly Subskin Sea Surface Temperature data.
• Validating other satellite or model-derived SST products using the included sensor-specific error statistics layers.
• Monitoring diurnal temperature cycles in the Pacific Ocean region based on the 24-hourly granule temporal resolution.
• Assimilating SST data into numerical weather prediction models based on the gridded, georeferenced format.

Strengths

• Data is validated against in situ iQuam data and continuously monitored in the NOAA SQUAM system.
• Provides 24 hourly files per day at a 0.02-degree lat-lon grid resolution.
• Includes two additional Sensor-Specific Error Statistics layers (bias and standard deviation) per pixel with valid SST.

Limitations

• Data over internal waters like lakes or rivers may not have enough in situ data for adequate validation.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific analytical tasks.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Produced by the NOAA ACSPO system from the Advanced Himawari Imager on the Himawari-9 geostationary satellite.

Time Range

Data is produced daily, with Delayed Mode files replacing Near Real-Time files after approximately two months.

Freshness

Last updated 2026-03-13 02:34:18.663143; freshness should be verified.

Geography

Pacific Ocean Region, as indicated by the dataset title.