GLODAPv2_90CI19990827: Ocean Chemistry Profiles from the North Pacific

GLODAPv2_90CI19990827 contains discrete and profile measurements of 10 key ocean variables, including ammonium, nitrate, and dissolved oxygen, collected during a 1999 research cruise. Data from the R/V Professor Khromov in the North Pacific and Sea of Okhotsk were contributed by researchers from Scripps Institution of Oceanography and the University of Rhode Island. This dataset is part of the larger GLODAPv2 synthesis project for ocean carbon cycle studies.

Use Cases

• Calibrating biogeochemical models based on discrete nutrient measurements (ammonium, nitrate, phosphate, silicate).
• Assessing water mass properties and mixing using concurrent CTD profile data for salinity and potential temperature.
• Studying dissolved oxygen dynamics and hypoxic conditions in the Sea of Okhotsk.
• Contributing to global ocean carbon inventory syntheses like GLODAPv2.

Strengths

• Includes 10 distinct, co-located physical and chemical variables, enabling multivariate analysis.
• Data collection spans a specific one-month cruise (1999-08-27 to 1999-09-28) with clear temporal bounds.
• Associated with the authoritative GLODAPv2 project and a specific cruise ID (GLODAPv2_90CI19990827).
• Instruments are explicitly named (CTD and bottle), indicating standardized collection methods.

Limitations

• Critical metadata is missing from all sources: row count, column names, file size, and license are unknown.
• The dataset's last update date conflicts between sources (2026-03-05 on Data.gov vs. 1999-09-28 on NASA Earthdata).
• Documentation gaps exist, as no detailed data dictionary or quality flags are described in the provided metadata.

Provenance

Source

Daniel L. Rudnick (Scripps Institution of Oceanography) and Lynne D. Talley (University of Rhode Island GSO).

Collection Method

Discrete samples and continuous profiles collected using CTD and bottle instruments from the R/V Professor Khromov.

Time Range

1999-08-27 to 1999-09-28

Freshness

2026-03-05 22:40:25.562670

Geography

North Pacific Ocean and Sea of Okhotsk