Identification

Title

Seawater temperature records for the UK Shelf - 09 - Electronic Data Storage Tag Database

Abstract

This dataset has been extracted as part of an exercise to assemble "all" Cefas Temperature Data and publish it in a Data paper. It is one of 17 Cefas data sources assembled. Electronic tags that record temperature and depth were attached to, or implanted into, cod caught in the southern North Sea between 1999 and 2009 (for methods see Neat et al., 2014). Data from tags that were returned from recaptured cod were downloaded and the depth time series was used to estimate daily geographic location.

Resource type

dataset

Resource locator

https://data.cefas.co.uk/view/3240

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: CSV.

function: download

Unique resource identifier

code

CEFAS3240

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

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

-7.00

East bounding longitude

5.00

North bounding latitude

57.50

South bounding latitude

48.00

Temporal reference

Temporal extent

Begin position

1999-03-24

End position

2010-09-18

Dataset reference date

date type

publication

effective date

2016-06-27

date type

revision

effective date

2024-06-21

date type

creation

effective date

2015-01-08

Frequency of update

notPlanned

Quality and validity

Lineage

Geolocation was done by matching the tidal and maximum depth data to known dates and locations as per the method described in Pedersen et al. (2007). Temperature data from each tag were binned into 10m depth intervals, and then averaged. The maximum depth in a bin was recorded and is used in the data provided. Temperature at the seabed is assumed to be the average of the temperatures sampled in the deepest 10m depth bin. Cod were at liberty to move at will, so the geographic and vertical sampling is not regularised to a grid or vertical stratification. The number of temperature records collected by cod on each day is also variable, since this depends on the number of cod remaining at liberty after release (i.e. those that were not recaptured by fishermen). The data describes the temperature data sampled by a total of 90 cod, and comprises temperature data collected on a total of 10,446 days. Tags recorded data at a minimum interval of 72 times per day continuously throughout the time at liberty (11-541 days). Data are available for 9,600 days during the period 1999 to 2010. The tags attached to, or implanted in, cod were of several types: Lotek 1200, 1400 and 2400, the Star-Oddi Centi and Milli, and the Cefas G5. All tags were calibrated by the manufacturer before deployment, and typically measure temperature to a precision of 0.03°C and an accuracy of at least 0.2°C. Temperature and depth are reported to 1dp. Temperature data collected by the tags are assumed to be a precise measure of seawater temperature based on the calibration tests performed by tag manufacturers before the tags are deployed. There is no independent measure of temperature against which to assess sensor performance while the tags are deployed at sea. Unusual temperatures associated with sensor failure or data corruption were excluded from the dataset, as were data from the day of release or recapture, when spurious surface or air temperatures might be recorded to the tag memory. Daily temperature averages had standard deviations ranging from 0 to 6.8, with 2/3 <0.1. The high variation reflects the behaviour of the particular cod on the particular day. The multiple sources are described in 17 separate metadata entries under the same Title, e.g. Seawater temperature records for the UK Shelf - 15 - RV Cefas Endeavour FerryBox Monitoring System. These data have been described in detail via the following publication. Morris, D. J., Pinnegar, J. K., Maxwell, D. L., Dye, S. R., Fernand, L. J., Flatman, S., Williams, O. J., and Rogers, S. I.: Over 10 million seawater temperature records for the United Kingdom Continental Shelf between 1880 and 2014 from 17 Cefas (United Kingdom government) marine data systems, Earth Syst. Sci. Data, 10, 27–51, https://doi.org/10.5194/essd-10-27-2018, 2018.

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

2024-06-21T01:35:13

Metadata language