IMOS National Reference Station (NRS) - Salinity, Carbon, Alkalinity, Oxygen and Nutrients

IMOS National Reference Station data includes salinity, carbon, alkalinity, oxygen, and nutrient measurements from nine Australian coastal sites. Sampling began between 2008 and 2010, is ongoing at seven sites, and ceased at two Western Australian sites in 2013. The dataset is managed by the Australian Ocean Data Network and includes historical data from CSIRO coastal monitoring programs dating back to 1944 for some locations.

Use Cases

• Analyze long-term trends in ocean acidification based on carbon and alkalinity measurements.
• Model coastal nutrient dynamics based on silicate, ammonium, nitrite/nitrate, and phosphate data.
• Assess seasonal and interannual variability in water quality parameters like salinity and oxygen.
• Compare biogeochemical conditions across different Australian coastal ecosystems.

Strengths

• Includes data from nine distinct coastal reference stations around Australia.
• Sampling began between 2008-2010 and is ongoing, providing a multi-year time series.
• Historical data is available for three sites, with records extending back to 1944, 1953, and 1951.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Sampling frequency varied (monthly vs. 3-monthly) and has ceased at two sites.

Provenance

Source

Integrated Marine Observing Systems (IMOS) National Mooring Network, Australian Ocean Data Network.

Collection Method

Samples collected monthly (or 3-monthly) from small vessels at fixed coastal stations.

Time Range

Primary sampling from 2008-ongoing, with historical data from 1944-2010 for three sites.

Freshness

Last updated 2026-04-18 18:54:31.974012; freshness should be verified.

Geography

Nine coastal sites around Australia: Tasmania, South Australia, Western Australia, Northern Territory, Queensland, New South Wales.