RV CIROLANA 01/1991 Low Resolution Conductivity-Temperature-Depth (CTD) Data
dataset
https://portal.medin.org.uk/portal/start.php?tpc=009_CEFAS79ee3407-6490-4961-a207-d58c8e65618d
The data held in this archive were collected from Cefas (or its predecessor
the Directorate of Fisheries Research) research cruises. They broadly cover
the European Shelf with some data from the Iberian Abyssal Plain. Data were
collected using the lowered CTD rosette system which is used when the vessel
is stationary. Usually bottles were fired at particular depths and samples
taken for calibration. In early years only a limited set of parameters were
collected. Notably Pressure (Depth), Temperature and Conductivity (CTD). From
Conductivity Salinity can be calculated using the UNESCO 1978,1983
formulations . In subsequent years more sensors have been added, notably
fluorometers, Optical back scatter or transmissometers and Light (PAR, photo
synthetically available radiation). The exact configuration varies between
cruises and this is reflected in the data format of the output files.
Data was collected from research vessels on station, a profile from the
surface to near the sea bed is undertaken. The down cast data should be a
clean profile. Water bottles for sample collection and calibration are fired
on the up cast.
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