CEFAS8d06aab4-d0c0-484b-9d7e-ddaea99cadf7 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 2025-09-18T12:19:09 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Seawater temperature records for the UK Shelf - 05 - Cefas Fisheries Ecology Research Programme 2016-06-27 publication 2025-09-18 revision 2015-01-08 creation CEFAS3236 https://data.cefas.co.uk 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. Diurnal and seasonal changes in water temperature in South Wales estuaries and saltmarshes. Data were collected in 1995 and 1996 from three estuarine locations in South Wales during a study of the thermal experience and tolerance of estuarine animals. The data comprise hourly records of temperature in brackish water where the depth is <1 metre at low tide. Three point locations in the Loughor Estuary, Oxwich Bay (Nicholstan Pill) and Swansea Bay (Black Pill) in South Wales. Positions were Loughor (51° 37.82’ N, 04° 13.54’ W), Oxwich Bay (51° 34.18’N, 04° 08.68’W) and Swansea Bay (51° 35.92’ N, 03° 59.61’ W) (WGS84, Plate carrée). 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 Temperature of the water column SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision 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 `Open Government Licence`_ .. _`open government licence`: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ English oceans -4.50 -3.50 51.50 51.75 1995-07-18 1996-05-11 Delimited Geographic Information System Unknown https://data.cefas.co.uk/view/3236 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: CSV, ESRI Shapefile. The data can also be accessed via the WFS and WMS protocols. 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 Point records, recorded hourly. Sensors fixed to bed of estuary or salt-marsh creek with less than one metre depth at low spring tides. Resolution and Accuracy. VEMCO Minilog temperature recorder (Bedford, Nova Scotia, Canada) with resolution of ±0.1°C . Accuracy has been established in laboratory tests as ±0.3°C. Data checked for outliers from the expected frequency and amplitude of variation by comparing absolute values with values generated by loess smoothing (various spans). Tidal model used to confirm the low probability that recorder was exposed to the air at low spring tides following deployment. The depth-averaged model of the Bristol and English Channel was built with an unstructured triangular mesh, using the hydrodynamic software Telemac2D (v6p3) [1]. The model domain extends 52.48°N – 48.02°N and 9.51°W – 2.23°E. The unstructured mesh was discretised with 279,087 nodes and 544,356 elements. The mesh has a resolution of approximately 3km along the open boundaries and 500m along the coastlines. Bathymetry for the area was sourced from the DEFRA Digital Elevation Model (Astrium). The resolution of this dataset is 1 arc second (~30m) and referenced to Chart Datum. The hydrodynamics are forced along the open boundaries using 11 tidal constituents (M2, S2, N2, K2, K1, O1, P1, Q1, M4, MS4 and MN4) from the OSU TPXO European Shelf 1/30° regional model [2]. The model is validated against 12 tide gauges sourced from the British Oceanographic Data Centre [3] at the following locations: St Mary’s, Newlyn, Devonport, Weymouth, Portsmouth, Newhaven, Dover, Milford Haven, Ilfracombe, Mumbles, Hinkley Point and St Heliers. The locations of the tide gauges are shown in Figure 31. Harmonic analysis of the model results shows good validation between the model and the tide gauges. The model was run for the period 17/07/1995 00:00 to 06/11/1996 00:00, with free surface elevations recorded hourly. For comparison with the temperature loggers, free surface elevations were extracted from the model results at the three locations: Oxwich (51° 33.90’ N, 04° 08.26’ W), Blackpill (51° 35.60’ N, 03° 58.51’ W) and Loughor (51° 38.99’ N, 04° 13.56’ W). The model’s free surface is referenced to variation around the sea surface. To use the model results with the temperature logger data, the free surfaces are transformed and referenced to the seabed. 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. .. _`https://doi.org/10.5194/essd-10-27-2018`: https://doi.org/10.5194/essd-10-27-2018 MEDIN 3.1.1