CEFASa7298bfe-ace1-4978-9eb9-c0b601ad25ee 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 2025-05-21T08:27:54 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 UK Marine Strategy Descriptor 11 ship noise assessment data for 2018 to 2022 2025-05-20 publication 2025-05-21 revision 2025-04-24 creation CEFAS22184 https://data.cefas.co.uk Annual median broadband (63 Hz - 4 kHz) sound level data for UK waters for the years 2018-2022 inclusive. Data format is ASCII. These maps underpin the UK Marine Strategy 2024 assessment for Descriptor 11.2 (continuous anthropogenic sound). Images of these maps in PNG format are also provided for reference. A summary table is also included which describes percentages of assessment region areas exceeding sound levels above given decibels. 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 Department for Environment, Food and Rural Affairs (DEFRA) defra.helpline@defra.gov.uk owner notPlanned Acoustic noise in the water column SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Habitats and biotopes 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 Publicly available data licensed under the Open Government Licence v3.0 ( `https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/`_ ) – Please note the applicable attribution statement is as follows: ‘includes Crown copyright, Cefas 2025' .. _`https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/`: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ English environment 1.73881 1.74086 52.4581 52.4595 2018 2022 Binary Delimited Unknown https://data.cefas.co.uk/view/22184 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, CSV. dataset INSPIRE Data Specification on Habitats and Biotopes – 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 Under the UK Marine Strategy, Good Environmental Status for Descriptor 11.2 is defined according to the “spatial distribution, temporal extent and levels of anthropogenic continuous low-frequency sound”. Since the spatial distribution of noise is required, *noise mapping* must be undertaken in order to assess the indicator. Although field monitoring of continuous sound in support of the Descriptor has been ongoing since 2018, such monitoring only provides data at point locations in the UK EEZ. To produce noise maps of continuous sound, it is necessary to couple this field monitoring at specific locations with spatial models of continuous sound levels. Such models are derived from data on sound sources (e.g. ship movements, wind speed) and the propagation of underwater sound in the environment (which depends on bathymetry, seabed composition, and water column properties). The source levels of wind-generated noise were modelled based on Reeder et al. (2011) using wind speed data sourced from the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-Interim/ERA-5 global atmospheric reanalysis (ECMWF, 2021). Ship source levels were computed using the JOMOPANS-ECHO model (MacGillivray and de Jong, 2021) and satellite AIS data. The sound propagation was modelled using the energy-flux method (Weston, 1971). Bathymetry data were extracted from EMODNET with 7.5” resolution, temperature and salinity data from the Copernicus Atlantic European North West Shelf Ocean Physics Analysis and Forecast product (0.016° x 0.016°, 33 depth levels, daily mean values) (Copernicus, 2019). Seabed acoustic properties were derived from the Hamilton model (Hamilton, 1987) using EMODNET seabed sediment data. MEDIN 3.1.1