SCIOPS provides measurements of oceanic carbon dioxide and ammonium from the RRS Charles Darwin 110B research cruise in January 1998. The dataset contains 57 pCO2 and TCO2 measurements computed from pH and alkalinity, plus 111 ammonium concentration measurements. Data collection was part of the Joint Global Ocean Flux Study and Ocean Margins EXchange programmes.
Use Cases
- Analyze the relationship between partial pressure of carbon dioxide (pCO2) and total inorganic carbon (TCO2) across the sampled water column.
- Model spatial distribution of ammonium concentration (NH4) along the Iberian Slope using provided latitude and longitude coordinates.
- Investigate carbon system parameters (pCO2, TCO2) during the winter period of January 1998 for seasonal comparison studies.
- Calibrate regional biogeochemical models using the co-located measurements of carbon dioxide and ammonium from a single cruise.
Strengths
- Provides 225 total chemical measurements (57 pCO2 + 57 TCO2 + 111 NH4) from a single, focused research cruise.
- Data has precise spatial (+41N to +43N, +9W to +11W) and temporal (January 6-19, 1998) boundaries.
- Measurements are derived from established methods: pCO2/TCO2 computed from pH/alkalinity, NH4 by colorimetric analysis.
Limitations
- Limited temporal scope to a 14-day cruise in January 1998, lacking seasonal or interannual data.
- Small sample size of 225 total data points restricts statistical power for broad generalizations.
- Geographic scope is restricted to a specific transect on the Iberian Slope, not representative of the entire basin.
Provenance
- Source
- SCIOPS, via NASA Earthdata, from the RRS Charles Darwin 110B cruise.
- Collection Method
- Ship-based measurements: pCO2 and TCO2 computed from pH and alkalinity; ammonium concentration determined by colorimetric analysis.
- Time Range
- 1998-01-06 to 1998-01-19
- Freshness
- null
- Geography
- North-East Atlantic, Iberian Slope, bounded by +41N to +43N latitude and +9W to +11W longitude.