Surface underway measurements of partial pressure of carbon dioxide (pCO2), sea surface te

From March to December 2019, this dataset contains surface underway measurements from the R/V Sikuliaq across the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea, and Arctic Ocean. The data include partial pressure of carbon dioxide (pCO2) in water, sea surface temperature, sea surface salinity, and barometric pressure, collected using a CO2 gas analyzer and equilibrator. It provides a continuous record of marine carbon parameters and physical conditions for a critical period in high-latitude seas.

Use Cases

• Tracking seasonal changes in ocean carbon uptake based on underway pCO2 measurements.
• Correlating sea surface temperature and salinity with carbon dioxide partial pressure.
• Analyzing spatial gradients of marine carbon parameters across Arctic and sub-Arctic seas.
• Validating regional ocean carbon models using in-situ surface underway data.

Strengths

• Covers a wide geographic area across multiple high-latitude seas from March to December 2019.
• Data collected using specific, named instruments: a Carbon dioxide (CO2) gas analyzer and a shower head chamber equilibrator.
• Appears on multiple authoritative platforms (Data.gov, NASA Earthdata), indicating curation and importance.

Limitations

• Column names and precise data structure are not provided in any source, limiting immediate usability.
• Key metadata such as row count, file size, and specific license are unknown.
• There is a conflict in the 'last updated' date between sources (2019-12-23 vs. 2026-03-05), creating uncertainty about metadata maintenance.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Surface underway measurements collected from R/V Sikuliaq expeditions using autonomous instruments.

Time Range

2019-03-01 to 2019-12-23

Freshness

2026-03-05 23:06:53.244191

Geography

North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea, Beaufort Sea, Arctic Ocean