Dataset

IMOS - Satellite Remote Sensing - SST - L4 - RAMSSA - Australia

An International Group for High Resolution Sea Surface Temperature (GHRSST) Level 4 sea surface temperature analysis, produced daily on an operational basis at the Australian Bureau of Meteorology using optimal interpolation (OI) on a regional 1/12 degree grid over the Australian region (20N - 70S, 60E - 170W). This Regional Australian Multi-Sensor SST Analysis (RAMSSA) v1.0 system blends infra-red SST observations from the Advanced Very High Resolution Radiometer (AVHRR) on NOAA and METOP polar-orbiting satellites, microwave SST observations from the Advanced Microwave Scanning Radiometer-2 (AMSR-2) on GCOM-W, and in situ data from ships, and drifting and moored buoys from the Global Telecommunications System (GTS).

All SST observations are filtered for those values suspected to be affected by diurnal warming by excluding cases which have experienced recent surface wind speeds of below 6 m/s during the day and less than 2 m/s during the night, thereby resulting in daily foundation SST estimates that are largely free of diurnal warming effects.

Data and Resources

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Sea Surface Temperatures Derived from NOAA Satellite Data
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NetCDF files via THREDDS catalog
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View and download data though the AODN Portal
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srs_ghrsst_l4_ramssa_url/analysed_sst
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WCM

srs_ghrsst_l4_ramssa_url
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GoGoDuck help documentation
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srs_ghrsst_l4_ramssa_url#file_url
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BODAAC help documentation
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Access To AWS Open Data Program registry for the Cloud Optimised version of this dataset
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Access to Jupyter notebook to query Cloud Optimised converted dataset]
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Website of the Integrated Marine Observing System (IMOS)
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PNG

Unnamed resource
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Unnamed resource
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Additional Information

Field	Value
Published (Metadata Record)	02/03/2026
Last updated	03/03/2026
Organisation	Australian Federal Government
License	License Not Specified
Update Frequency	Unknown