RV CIRLANA 10/1990: Low-Resolution CTD Oceanographic Profiles from the European Shelf

Conductivity, temperature, and depth data were collected from the European Shelf and Iberian Abyssal Plain using a lowered CTD rosette system on CEFAS research vessel surveys. The data represent profiles from the surface to near the seabed, with water samples taken on the up-cast for sensor calibration. Over time, the sensor configuration expanded to include instruments like fluorometers and optical backscatter sensors, varying by cruise.

Use Cases

• Calculate ocean salinity based on conductivity data using UNESCO formulations.
• Analyze vertical water column structure based on depth, temperature, and conductivity profiles.
• Study temporal changes in marine sensor technology and data collection practices based on varying cruise configurations.
• Calibrate modern oceanographic models using historical CTD reference data.

Strengths

• Data collection follows a standardized oceanographic method using a lowered CTD rosette system.
• Coverage includes the European Shelf and extends to the Iberian Abyssal Plain.
• The description details an evolution in sensor technology, from core CTD parameters to later additions like fluorometers.

Limitations

• Row count, file formats, and column-level documentation are unknown, limiting suitability assessment.
• The last update date is unknown, so data freshness is unverified.
• The exact parameters available vary by cruise, requiring manual inspection of individual data files.

Provenance

Source

CEFAS (Centre for Environment, Fisheries and Aquaculture Science) research surveys.

Collection Method

Collected using a lowered CTD rosette system on stationary research vessels, with water samples taken for calibration.

Time Range

Includes data from a survey in October 1990.

Freshness

Data is from a 1990 survey; last update date is unknown.

Geography

Broadly covers the European Shelf, with some data from the Iberian Abyssal Plain.