Temperature, salinity and other variables collected from discrete sample and profile obser

NCEI Accession 0157617 contains discrete sample and profile data from the R/V Melville's 1999 cruise in the North Pacific Ocean. The dataset includes measurements of chlorofluorocarbons (CFC-11, CFC-12, CFC-113), dissolved oxygen, nutrients (nitrate, nitrite, phosphate, silicate), and physical properties like salinity and potential temperature. These data were collected by researchers from Columbia University's Lamont-Doherty Earth Observatory using CTD and bottle instruments.

Use Cases

• Tracing ocean circulation and ventilation rates based on chlorofluorocarbon (CFC) concentrations.
• Studying marine biogeochemical cycles based on nutrient (nitrate, phosphate, silicate) and oxygen measurements.
• Calculating water mass properties and density based on concurrent salinity, temperature, and pressure data.
• Investigating isotopic signatures in the ocean based on delta Nitrogen-15 and delta Oxygen-18 measurements.

Strengths

• Includes multiple tracer gases (CFC-11, CFC-12, CFC-113) useful for dating water masses.
• Combines chemical, physical, and isotopic variables from a single research cruise, enabling multivariate analysis.
• Data collection is attributed to a specific principal investigator (A. van Geen) and institution (Lamont-Doherty Earth Observatory).

Limitations

• Last updated 1999-11-22 00:00:00; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file formats are unknown, which may limit suitability assessment.

Provenance

Source

NOAA National Centers for Environmental Information (NCEI)

Collection Method

Data collected from discrete sample and profile observations using CTD and bottle instruments aboard the R/V Melville.

Time Range

1999-10 29 to 1999-11-22

Freshness

1999-11-22

Geography

North Pacific Ocean