Line W Hydrography: CTD and Chlorofluorocarbon Measurements

Sixteen full-depth hydrographic casts were collected along Line W in the Northwest Atlantic between October 13 and 17, 2005. The dataset includes conductivity, temperature, pressure, dissolved oxygen, and chlorofluorocarbons (CFCs 11, 12, 113) from CTD sensors and calibrated water samples. Measurements support analysis of water column properties and transient tracer distribution.

Use Cases

• Calibrating CTD sensor readings against discrete bottle samples for salinity and dissolved oxygen.
• Analyzing the distribution and penetration of chlorofluorocarbons (CFCs) as transient tracers.
• Studying water mass properties and circulation along the Line W hydrographic section.
• Validating lowered acoustic Doppler current profiler (LADCP) data from full-depth casts.

Strengths

• Includes 16 full-depth casts, providing vertical profile coverage.
• Data is calibrated using discrete water sample analysis for key parameters.
• Contains measurements of multiple transient tracers (CFCs 11, 12, 113).

Limitations

• Column names and specific data structure are not provided in the available metadata.
• Conflicting last-update dates exist between platforms (2005-10-17 vs. 2026-03-05).
• Dataset size, row count, and license information are not specified.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Ship-based collection via CTD casts, LADCP, and rosette water samples from the R/V OCEANUS.

Time Range

2005-10-13 to 2005-10-17

Freshness

2005-10-17

Geography

Northwest Atlantic, along Line W from the continental shelf south of New England toward Bermuda.