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Full catalog/RAMSSA_09km-ABOM-L4-AUS-v01
RAMSSA_09km-ABOM-L4-AUS-v01·v1.0·dataset

How warm the sea surface is, Australia (9 km)

GHRSST Level 4 RAMSSA_9km Australian Regional Foundation Sea Surface Temperature Analysis v1.0 dataset (GDS2)
ocean NASA POCLOUD Level 4 active netCDF-4
In plain English

What it measures. A daily map of how warm the sea surface is around Australia at fine detail (about 9 kilometers), designed to reflect the underlying water temperature without the noise of daily heating and nightly cooling.

How it's made. Produced by Australia's Bureau of Meteorology by blending temperature readings from satellites with in-water measurements from ships, buoys, and floats, then smoothly filling gaps.

How & where you'd use it. Supports weather forecasting, marine and fisheries management, and monitoring of ocean conditions in the Australian region.

What's measured

OCEANS › OCEAN TEMPERATURE › SEA SURFACE TEMPERATURE › FOUNDATION SEA SURFACE TEMPERATURE

Coverage & cadence

  • Time span2006-06-12 → ongoing
  • Measured byBUOYS (DRIFTING BUOYS, CTD, XBT) · Suomi-NPP (VIIRS) · NOAA-20 (VIIRS) · GCOM-W1 (AMSR2) · METOP-A (AVHRR-3) · METOP-B (AVHRR-3) · NCEP GTS · Ships (TEMPERATURE PROBES)
  • Processing levelLevel 4
  • Spatial extent60, -70, 180, 20
  • FormatsnetCDF-4
  • StatusACTIVE

What you can do with it

  • Watch sea-surface temperature and marine heatwaves
  • Spot algal blooms and ocean-colour shifts
  • Support fisheries and coastal monitoring
Official description

A 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 (BoM) 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 satellite SST observations from passive infrared and passive microwave radiometers, with in situ data from ships, Argo floats, XBTs, CTDs, drifting buoys and moorings from the Global Telecommunications System (GTS). SST observations that have experienced recent surface wind speeds less than 6 m/s during the day or less than 2 m/s during night are rejected from the analysis. The processing results in daily foundation SST estimates that are largely free of nocturnal cooling and diurnal warming effects. Sea ice concentrations are supplied by the NOAA/NCEP 12.7 km sea ice analysis. In the absence of observations, the analysis relaxes to the BoM Global Weekly 1 degree OI SST analysis, which relaxes to the Reynolds and Smith (1994) Monthly 1 degree SST climatology for 1961 - 1990.

Get the data

ramssa_09km-abom-l4-aus-v01_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="RAMSSA_09km-ABOM-L4-AUS-v01",
    version="1.0",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),  # your area (W,S,E,N)
    temporal=("2024-01-01", "2024-12-31"),       # your dates
)
files = earthaccess.open(results)   # stream straight from POCLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.