NASA Earthdata hosts measurements of oceanic halocarbons and carbon dioxide from the D207 research cruise in the Southern Ocean. The dataset contains 377 measurements of tetrachloromethane, alongside pCO2 and TCO2 readings, collected by researchers Thomas Haine and J Robertson. Data collection occurred during the UK World Ocean Circulation Experiment cruise from February 19 to March 31, 1994.
Use Cases
- Analyze tetrachloromethane concentration variations across the -28N to -49N latitude and +61E to +51E longitude transect.
- Correlate pCO2 measurements with TCO2 data to study ocean carbon chemistry dynamics.
- Map the spatial distribution of halocarbon compounds in the Southern Ocean water column during February-March 1994.
Strengths
- Dataset includes 377 specific measurements of tetrachloromethane per unit volume.
- Clear temporal coverage from a defined research cruise lasting from February 19 to March 31, 1994.
- Specific spatial coverage defined from -28N to -49N latitude and +61E to +51E longitude.
Limitations
- Sample size is limited to a single cruise over approximately 40 days.
- Data is temporally stale, last updated in March 1994, representing a historical snapshot.
- Unknown row count and column structure for the full dataset.
Provenance
- Source
- NASA Earthdata, from the UK World Ocean Circulation Experiment (WOCE).
- Collection Method
- Measurements made during the D207 research cruise: tetrachloromethane via purging, cryogenic trapping, and gas chromatography; pCO2 by gas chromatography; TCO2 using an extractor unit with coulometric analysis.
- Time Range
- 1994-02-19 to 1994-03-31
- Freshness
- 1994-03-31
- Geography
- Southern Ocean, -28N to -49N latitude, +61E to +51E longitude.