Gulf of Alaska CTD Profile Data from June 1999

CTD cast data from the R/V Alpha Helix provides a single-day snapshot of oceanographic conditions in the Gulf of Alaska on June 18, 1999. The dataset contains vertical profiles of temperature, salinity, and dissolved oxygen. It was collected and submitted by researchers from the University of Alaska's Institute of Marine Sciences.

Use Cases

• Analyzing the vertical temperature structure (temperature profile) in the Gulf of Alaska.
• Studying the relationship between dissolved oxygen levels and salinity at specific depths.
• Using the single-day, geolocated CTD cast as a validation point for regional ocean models.
• Investigating baseline physical and chemical oceanographic conditions for a specific date and location.

Strengths

• Data originates from a recognized research vessel (R/V Alpha Helix) and institution (University of Alaska / Institute of Marine Sciences).
• The dataset is hosted on multiple authoritative platforms (NASA Earthdata and Data.gov), indicating curation and importance.

Limitations

• The dataset is limited to a single day of observations (June 18, 1999), providing no temporal trend.
• Specific column names, row counts, and file formats are not provided by any source, limiting immediate usability.
• Sources conflict on the last updated date, reporting both 1999-06-18 and 2026-03 06.

Provenance

Source

University of Alaska / Institute of Marine Sciences, submitted via NOAA NCEI.

Collection Method

Collected using Conductivity, Temperature, Depth (CTD) casts from the R/V Alpha Helix.

Time Range

1999-06-18 to 1999-06-18

Freshness

2026-03-06 00:24:26.634395

Geography

Gulf of Alaska