CTD data collected from CEFAS research vessel surveys on the European Shelf and Iberian Abyssal Plain. The lowered rosette system captured profiles from surface to seabed, with parameters including pressure, temperature, and conductivity for salinity calculation. Early years recorded a limited set, with fluorometers and optical sensors added later.
Use Cases
- Calculate salinity profiles based on conductivity data using UNESCO formulations.
- Analyze vertical water column structure from surface-to-bed CTD profiles.
- Study historical sensor evolution by comparing early limited parameter sets with later fluorometer and optical data.
- Calibrate CTD instruments using bottle sample data collected on the up cast.
Strengths
- Data originates from authoritative CEFAS research vessel surveys.
- Description details the evolution of sensor configurations over time, from basic CTD to fluorometers and optical sensors.
- Methodology for clean profile collection using the down cast and calibration sampling on the up cast is specified.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Last update date is unknown; freshness unverified.
Provenance
- Source
- CEFAS (Centre for Environment, Fisheries and Aquaculture Science) research surveys.
- Collection Method
- Lowered CTD rosette system used when the vessel was stationary, with bottle samples fired at specific depths for calibration.
- Time Range
- Includes data from January 1987, with collection spanning subsequent years.
- Geography
- European Shelf and Iberian Abyssal Plain.