Trinidad Head Line: Monthly Hydrographic and Plankton Data from the California Current

The Trinidad Head Line transect provides monthly hydrographic and plankton observations from coastal waters off northern California since 2008. Data includes temperature, salinity, nutrient and chlorophyll concentrations, and zooplankton net tows from up to six stations. This dataset is maintained by the National Oceanic and Atmospheric Administration's Southwest Fisheries Science Center.

Use Cases

• Modeling the effects of ocean acidification and hypoxia on marine organisms based on hydrographic and nutrient data.
• Analyzing seasonal and interannual variability in plankton communities based on monthly zooplankton net tows.
• Studying coastal hydrographic structure and ecosystem dynamics based on temperature and salinity casts.
• Investigating nutrient-chlorophyll relationships in the California Current ecosystem based on water sample assays.

Strengths

• Monthly sampling provides a long-term time-series perspective since 2008.
• Data collection spans a spatial transect with up to six stations over the shelf and slope.
• Includes a suite of physical, chemical, and biological parameters (hydrography, nutrients, chlorophyll, zooplankton).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the single Trinidad Head transect.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Ship-based observations from a transect of stations, with hydrographic casts and physical sample collection.

Time Range

2008 to current, with monthly sampling.

Freshness

Last updated 2026-03-14 23:06:30.169882; freshness should be verified.

Geography

Coastal waters off northern California, along the Trinidad Head Line transect.