Atlantic Zone Monitoring Program: St. Lawrence Estuary Water Chemistry, 2012-2020

The Estuary and Gulf of St. Lawrence is the focus of this dataset, which contains discrete sample and profile observations collected from 2012-04-20 to 2020-10-30. It includes measurements of dissolved inorganic carbon, total alkalinity, pH, water temperature, salinity, dissolved oxygen, nutrients, and ammonium. The data were collected under the Atlantic Zone Monitoring Program by Fisheries and Oceans Canada to investigate ocean acidification and ecosystem changes.

Use Cases

• Modeling ocean acidification trends based on dissolved inorganic carbon and pH measurements.
• Assessing marine ecosystem health based on nutrient and dissolved oxygen profiles.
• Analyzing seasonal and interannual variability in water properties like temperature and salinity.
• Investigating carbon chemistry and alkalinity to understand the ocean's role in climate regulation.

Strengths

• Data collection spans over eight years, from 2012 to 2020.
• Includes multiple key chemical and physical variables for ocean acidification studies.
• Collected under a long-term national monitoring program (AZMP) established in 1998.

Limitations

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

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce; data originates from Fisheries and Oceans Canada's Atlantic Zone Monitoring Program.

Collection Method

Discrete sample and profile observations collected from research vessels.

Time Range

2012-04-20 to 2020-10-30

Freshness

Last updated 2026-03-05 23:06:35.418919; freshness should be verified.

Geography

Estuary and Gulf of St. Lawrence, Canada