CEFASe2088143-72fd-413a-a461-130bffd5f97a English dataset Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk pointOfContact 2023-03-21T01:42:47 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 RV ENDEAVOUR 08/2003 Low Resolution Conductivity-Temperature-Depth (CTD) Data 2013-11-21 publication 2023-03-21 revision 2013-03-04 creation CEFAS899 https://data.cefas.co.uk The data in this archive were collected from CEFAS (Or DFR) 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. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk originator Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk custodian Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk distributor Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) data.manager@cefas.co.uk owner notPlanned Currents Water column temperature and salinity SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Horizontal velocity of the water column (currents) Raw current meter output parameters Raw temperature and/or salinity instrument output Salinity of the water column Temperature of the water column SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Remote Sensing Advice Analysis Management Monitoring GEMET, version 1.0 2008-06-01 publication Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Water column SeaVoX Vertical Co-ordinate Coverages 2010-05-18 revision Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 publication data.gov.uk MEDIN metadata record availability 2012-01-11 publication otherRestrictions noLimitations otherRestrictions Public data - no limitations to reuse English oceans 0.00 6.00 50.75 54.50 2003-09-27 2003-10-03 Binary Unknown https://data.cefas.co.uk/view/899 Cefas Data Portal download The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. Data is available in the following formats: Binary download. dataset INSPIRE Data Specification on Oceanographic geographical features – Technical Guidelines 2013-12-10 publication false See the referenced specification Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication true See the referenced specification Data was collected via the CTD rosette system using either a Guildine CTD or from approximately 1993 an Falmouth Scientific Instruments Integrated CTD. In addition to the CTD, additional instruments are Sea Point Fluorometers, Dr Haardt Fluorometers, Transmissometers, Sea Point Optical Backscatter, LICOR Light Sensors (PAR) Instruments were usually calibrated where possible before the cruise and post cruise, in a water bath, for Temperature and using a pressure test vessel for pressure. Calibrations for Salinity were performed with reference to Salinity samples collected. Calibration of the fluorescence to generate chlorophyll was by comparison to the collected samples. Similarly suspend load would be calibrated to samples collected and filtered. The light sensor was calibrated in a dark light box. The specific calibration values (where available) are stored with each cruise data set. Processing of the data was initially performed using the instrument specific programs to generate ASCII files (e.g FSIpost) a suite of programs developed at CEFAS was then used to generate calibrated files and generate the processed information. +------------+---------+--------------------------------+ |Pres |DBAR |Pressure in Dbar | +------------+---------+--------------------------------+ |Temp |Deg C |Temperature in Celsius | +------------+---------+--------------------------------+ |SALT | |Salinity (PSS 78) | +------------+---------+--------------------------------+ |PTEMP |Deg C |Potential Temperature | +------------+---------+--------------------------------+ |SNDVEL |m/sec |Sound Velocity | +------------+---------+--------------------------------+ |SIG-TH |KG/m3 |Density Sigma theta | +------------+---------+--------------------------------+ |SIGM |KG/m3 |Density Sigma T | +------------+---------+--------------------------------+ |SVAN |10*8 |Specific Volume Anomaly | +------------+---------+--------------------------------+ |DYNHT |m |Dynamic Height | +------------+---------+--------------------------------+ |BVF |CPH |Brunt Vaisala Frequency | +------------+---------+--------------------------------+ |Depth |m |Depth (integrated from density) | +------------+---------+--------------------------------+ |Transmission|raw | | | |volts | | +------------+---------+--------------------------------+ |Susp Load |mg/l |Calibrated transmission (or | | | |OBS) | +------------+---------+--------------------------------+ |RADI |lng A |raw light sensor | +------------+---------+--------------------------------+ |PAR |uE/M2/S |Calibrated light | +------------+---------+--------------------------------+ |Fluor |Volt |Uncalibrated fluorometer | +------------+---------+--------------------------------+ |Chl |mg/m3 |Calibrated fluorometer | +------------+---------+--------------------------------+ MEDIN 3.1.1