Line W Hydrography: CTD and Bottle Casts from the Northwest Atlantic

Twenty-one full-depth hydrographic casts were collected along the Line W transect between New England and Bermuda in October 2006. The casts include calibrated CTD profiles, LADCP current measurements, and water samples analyzed for salinity, dissolved oxygen, and chlorofluorocarbons (CFCs 11, 12, 113). This dataset provides a snapshot of water mass properties and transient tracer concentrations in a key region of the Northwest Atlantic.

Use Cases

• Calibrating ocean circulation models based on in-situ CTD and LADCP profiles.
• Tracking the spread of anthropogenic chlorofluorocarbons (CFCs) in the deep ocean.
• Analyzing water mass properties (temperature, salinity, oxygen) along a major hydrographic section.
• Studying temporal changes in the Northwest Atlantic by comparing this section with later surveys.

Strengths

• Includes 21 full-depth casts, providing spatial coverage along the Line W transect.
• Contains multiple measurement types: CTD, LADCP, and calibrated bottle samples.
• Data is calibrated, with shipboard analysis of salinity and oxygen used to adjust sensor readings.

Limitations

• Column names and specific data structure are not provided in any source description.
• Conflicting last-updated dates: one source lists 2006-10-24, another lists 2026-03-05.
• Limited temporal coverage to a single 6-day cruise in October 2006.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Data collected via shipboard CTD, LADCP, and rosette water sampler casts from the R/V OCEANUS.

Time Range

2006-10-19 to 2006-10-24

Freshness

2026-03-05 23:49:05.892726

Geography

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