Southern Ocean Carbon and Hydrographic Profiles from GO-SHIP Section S04P, 2018

NOAA's dataset contains discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH, and other hydrographic and chemical parameters. The data was collected during the R/V Nathaniel B. Palmer cruise NBP18_02 in the Pacific Sector of the Southern Ocean from March 9 to May 14, 2018. It is part of the US Global Ocean Carbon and Repeat Hydrography Program, reoccupying the GO-SHIP S04P line.

Use Cases

• Modeling ocean acidification based on pH and dissolved inorganic carbon measurements.
• Analyzing carbon cycling and storage based on total alkalinity and dissolved inorganic carbon profiles.
• Studying nutrient dynamics in the Southern Ocean based on nitrate, silicate, and phosphate data.
• Investigating water mass circulation and ventilation based on chlorofluorocarbon (CFC) measurements.
• Calibrating biogeochemical models using co-located hydrographic data like temperature and salinity.

Strengths

• Includes multiple co-located chemical and physical parameters, suggesting a holistic oceanographic profile.
• Covers a specific, important transect (GO-SHIP Section S04P) in the data-sparse Southern Ocean.
• Data collection occurred over a defined period from 2018-03 09 to 2018-05-14.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Data may reflect geographic and temporal bias inherent to a single ship cruise.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Discrete water sample and CTD profile measurements collected from a research vessel.

Time Range

2018-03-09 to 2018-05-14

Freshness

Last updated 2026-03-05 23:13:30.111259; freshness should be verified.

Geography

Pacific Sector of the Southern Ocean, along GO-SHIP Section S04P, from Hobart, Tasmania to Punta Arenas, Chile.