Surface underway observations from NOAA Ship Gordon Gunter in the Gulf of Mexico and North Atlantic Ocean during 2021. The dataset includes measurements of mole fraction of CO2 in the equilibrator headspace, sea surface temperature, salinity, and fugacity of CO2 in seawater. Data were collected by NOAA NCEI using a carbon dioxide gas analyzer and shower head chamber equilibrator.
Use Cases
- Calculate air-sea CO2 flux using the difference between sea water fCO2 and interpolated air fCO2 columns.
- Analyze the relationship between sea surface temperature and fugacity of CO2 in sea water at SST.
- Model coastal carbon chemistry by correlating sea surface salinity with mole fraction of CO2 in the equilibrator headspace.
- Validate satellite-derived sea surface temperature and salinity products with in-situ measurements from the equilibrator.
Strengths
- Data collected during dedicated NOAA ship cruises in 2021, providing a controlled measurement environment.
- Includes multiple directly measured and derived carbon system variables like fugacity of CO2 and mole fractions.
Limitations
- Unknown row count and spatial resolution limit statistical analysis of regional patterns.
- Temporal coverage is limited to the specific 2021 cruise periods, not a continuous time series.
- Data is restricted to surface waters, lacking vertical profile information for the water column.
Provenance
- Source
- NOAA_NCEI (National Centers for Environmental Information).
- Collection Method
- Collected via shipboard carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator during underway operations.
- Time Range
- 2021.
- Freshness
- Data from 2021, with last update recorded as 2021-05-27.
- Geography
- Gulf of Mexico and North Atlantic Ocean, coastal surface waters along the cruise track of NOAA Ship Gordon Gunter.