R/V Sikuliaq 2020: Surface Ocean CO2 Measurements

From March 21 to December 12, 2020, this dataset contains surface underway measurements collected during R/V Sikuliaq expeditions across northern Pacific and Arctic waters. It includes partial pressure of carbon dioxide (pCO2) in air and water, sea surface temperature, sea surface salinity, and barometric pressure. The data were gathered using a CO2 gas analyzer and a shower head chamber equilibrator.

Use Cases

• Calculating air-sea CO2 flux based on pCO2 measurements in air and water.
• Monitoring ocean acidification trends using sea surface temperature and pCO2-water data.
• Validating regional carbon cycle models with in-situ pCO2, salinity, and temperature data.
• Assessing spatial variability of marine carbon parameters across the Gulf of Alaska, Bering Sea, and Arctic Ocean.

Strengths

• Covers a specific and extended time range from March 21 to December 12, 2020.
• Includes direct measurements of key carbon cycle variables (pCO2-air, pCO2-water).
• Data collected across a wide geographic area spanning multiple northern ocean basins.

Limitations

• Column names and exact data structure are not provided by any source.
• Conflicting last updated dates exist between sources (2020-12-12 vs. 2026-03-05).
• Row count, file size, and license information are not available.

Provenance

Source

NOAA National Centers for Environmental Information (NCEI)

Collection Method

Surface underway measurements from R/V Sikuliaq expeditions using a CO2 gas analyzer and equilibrator.

Time Range

2020-03-21 to 2020-12-12

Freshness

2026-03-05 22:49:42.757949

Geography

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