184 total inorganic carbon and 156 ammonium concentration measurements were collected from the water column during the Poseidon 237_1 research cruise. Scientists Robin Keir and Rolf Peinert gathered this data for the JGOFS and OMEX programs. The cruise operated in the North-East Atlantic from February 28 to March 16, 1998.
Use Cases
- Analyze correlations between total inorganic carbon (TCO2) and ammonium (NH4) concentrations across the sampled water column.
- Model carbon flux in the North-Western Iberian Slope region using the 184 TCO2 measurement points.
- Study spatial distribution of nutrients by mapping the 156 NH4 measurements against the defined latitude and longitude bounds.
- Validate regional ocean biogeochemical models with in-situ TCO2 data collected via gas analyser.
- Investigate short-term temporal changes in water column chemistry during the February-March 1998 cruise period.
Strengths
- Provides 340 discrete chemical measurements (184 TCO2 + 156 NH4) from a single research cruise.
- Clear spatial coverage defined within +42N to +43N latitude and +9W to +10W longitude.
- Precise temporal coverage from February 28 to March 16, 1998.
Limitations
- Limited to 340 total data points from a single, brief cruise, offering a snapshot rather than long-term trends.
- Geographic scope is restricted to a specific transect in the North-East Atlantic, limiting generalizability.
- Data is from 1998 and may not reflect current ocean chemistry conditions.
Provenance
- Source
- Measurements by Robin Keir (TCO2) and Rolf Peinert (NH4) during the Poseidon 237_1 cruise for JGOFS and OMEX programs.
- Collection Method
- TCO2 measured by filtration, acidification, and CO2 quantification via gas analyser; NH4 measured by colorimetric autoanalysis.
- Time Range
- 1998-02-28 to 1998-03-16
- Freshness
- Data collection ended on 1998-03-16; no update frequency specified.
- Geography
- North-East Atlantic, North-Western Iberian Slope (+42N to +43N, +9W to +10W)