Identification

Title

RV ENDEAVOUR 17/2007 Low Resolution Conductivity-Temperature-Depth (CTD) Data

Abstract

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 Abysal 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.

Resource type

dataset

Resource locator

https://data.cefas.co.uk/view/931

name: Cefas Data Portal

description: 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.

function: download

Unique resource identifier

code

CEFAS931

codeSpace

https://data.cefas.co.uk

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

oceans

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011-03-25

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011-03-25

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2010-05-18

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2012-01-11

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2012-01-11

Geographic location

West bounding longitude

-1.00

East bounding longitude

8.00

North bounding latitude

58.00

South bounding latitude

53.00

Temporal reference

Temporal extent

Begin position

2007-09-13

End position

2007-09-21

Dataset reference date

date type

publication

effective date

2013-11-28

date type

revision

effective date

2023-03-22

date type

creation

effective date

2013-03-12

Frequency of update

notPlanned

Quality and validity

Lineage

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 | +------------+---------+--------------------------------+

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2013-12-10

degree

false

explanation

See the referenced specification

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

true

explanation

See the referenced specification

Data format

name of format

Unknown

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

Responsible organisations

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

originator

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

custodian

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

distributor

Responsible party

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

email address

data.manager@cefas.co.uk

responsible party role

owner

Metadata on metadata

Metadata point of contact

organisation name

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

email address

data.manager@cefas.co.uk

responsible party role

pointOfContact

Metadata date

2023-03-22T11:59:25

Metadata language