{"accessLimitation":{"value":"withdrawn","availability":"Withdrawn","description":"Access to the resource is limited to users who have been authorised by the data custodian or data owner in accordance with applicable policies, agreements, or licensing conditions","uri":"http://vocab.nerc.ac.uk/collection/N07/current/RAUT/"},"authors":[{"familyName":"Bealey","givenName":"W.J.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-3708-5864","fullName":"Bealey, W.J."},{"familyName":"Martin Hernandez","givenName":"C.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Martin Hernandez, C."},{"familyName":"Vigier","givenName":"A.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0001-6798-409X","fullName":"Vigier, A."},{"familyName":"Levy","givenName":"P.E.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-8505-1901","fullName":"Levy, P.E."},{"familyName":"Stedman","givenName":"J.R.","organisationName":"Ricardo Energy & Environment","role":"author","email":"john.stedman@ricardo.com","fullName":"Stedman, J.R."}],"availability":"Withdrawn","boundingBoxes":[{"westBoundLongitude":-8.648,"eastBoundLongitude":1.768,"southBoundLatitude":49.864,"northBoundLatitude":60.861,"bounds":"{\"type\": \"Feature\",      \"properties\": {},      \"geometry\": {        \"type\": \"Polygon\",        \"coordinates\": [[[-8.648, 49.864], [-8.648, 60.861], [1.768, 60.861], [1.768, 49.864], [-8.648, 49.864]]]      }}","coordinates":"[[[-8.648, 49.864], [-8.648, 60.861], [1.768, 60.861], [1.768, 49.864], [-8.648, 49.864]]]"}],"citation":{"authors":["Bealey, W.J.","Martin Hernandez, C.","Vigier, A.","Levy, P.E.","Stedman, J.R."],"bibtex":"https://catalogue.ceh.ac.uk/documents/f83a56ef-15ad-4270-aefd-a6ef4b24b4ee/citation?format=bib","day":5,"doi":"10.5285/f83a56ef-15ad-4270-aefd-a6ef4b24b4ee","month":9,"publisher":"NERC EDS Environmental Information Data Centre","resourceTypeGeneral":"dataset","ris":"https://catalogue.ceh.ac.uk/documents/f83a56ef-15ad-4270-aefd-a6ef4b24b4ee/citation?format=ris","title":"Deposition and concentration of nitrogen and sulphur for protected sites in the UK, 2018-2020","url":"https://doi.org/10.5285/f83a56ef-15ad-4270-aefd-a6ef4b24b4ee","year":2022},"custodians":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"}],"datasetReferenceDate":{"creationDate":"2022-08-26","publicationDate":"2022-09-05","unavailableDate":"2023-02-13"},"description":"This dataset provides deposition values of sulphur and nitrogen deposition, deposition of non-marine base cations and concentration values for ammonia (NH3), sulphur dioxide (SO2) and nitrogen oxide (NOx) on the UK nature conservation protected sites, averaged over the years 2018 to 2020. The dataset also includes calculated minimum, maximum and gridded average values for each site. Protected nature sites covered are: \n(i) Special Areas of Conservation (SAC) \n(ii) Special Protection Areas (SPA) \n(iii) Sites of Special Scientific Interest (SSSI). \n\nThe data consist of values of nitrogen and acid deposition, non-marine base cations deposition, and concentrations of ammonia (NH3) based on the Concentration Based Estimated Deposition (CBED), and concentrations of NOx and SO2 using the Pollution Climate Mapping (PCM) model. \n\nNitrogen and acid deposition data is also given for specific habitat types including: \n(i) moorland/short vegetation everywhere, \n(ii) forest everywhere, and \n(iii) the grid square average over multiple land cover types (i.e. arable, grassland, forest, moorland, urban) \n\nThese habitat-specific data are recommended for use with critical loads for the calculation of critical load exceedances using the relevant deposition/habitat type.","distributionFormats":[{"name":"Comma-separated values (CSV)","type":"text/csv","version":"unknown"}],"distributorContacts":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"distributor","email":"info@eidc.ac.uk"}],"funding":[{"funderName":"Department for Environment Food and Rural Affairs","funderIdentifier":"https://ror.org/00tnppw48","orcid":false,"ror":true}],"id":"f83a56ef-15ad-4270-aefd-a6ef4b24b4ee","incomingCitationCount":0,"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/f83a56ef-15ad-4270-aefd-a6ef4b24b4ee.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"inspireThemes":[{"theme":"Environmental Monitoring Facilities","uri":"http://inspire.ec.europa.eu/theme/ef"}],"keywordsOther":[{"value":"sulphate","uri":"http://www.eionet.europa.eu/gemet/concept/8190"},{"value":"ammonia","uri":"http://www.eionet.europa.eu/gemet/concept/375"},{"value":"nitrogen","uri":"http://onto.nerc.ac.uk/CAST/273"},{"value":"pollutant deposition","uri":"http://www.eionet.europa.eu/gemet/concept/6406"}],"keywordsTheme":[{"value":"Pollution","uri":"http://onto.nerc.ac.uk/CEHMD/topic/15"}],"licences":[{"value":"This resource is available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}],"lineage":"The Air Pollution Information System (APIS), through the 'Site Relevant Critical Loads' tool and APIS new mapping interface, provides critical loads for acidity and nitrogen and critical levels for ammonia, sulphur dioxide and nitrogen oxides for designated features within every SAC, SPA or A/SSSI in the UK. In addition, deposition and concentration data for nitrogen, sulphur pollutants and non-marine base cations are provided at each site to give an estimate of critical load/level exceedance.\n\nThe data provided is based on pollutant deposition gridded maps for nitrogen and acid deposition and concentration maps of ammonia, nitrogen oxides, sulphur and non-marine base cations, which are overlayed to a GIS shape file of site boundaries in the UK (e.g. SAC, SPA, SSSI). These gridded maps were then clipped to provide the pollutant values for each grid square including the area of the clipped grid. The resulting data was then queried to generate site statistics in the form of a minimum, maximum and area weighted average values for each of the pollutants.\n\nFor nitrogen and acid deposition values, base cations deposition and ammonia concentrations, 3 year average pollutant maps were used at a resolution of 1 x 1 km from the CBED model for the years 2018-2020. For nitrogen dioxide and sulphur dioxide concentrations the 1 x 1 km PCM model was used based on the 3 year average (2018-2020). Deposition values are generated for specific habitat types (forest and semi-natural) to be used in critical load exceedance calculations.\n\nThe full methodology is available in the contextual metadata available with this dataset.\n\nThe work of APIS is jointly funded between the Centre for Ecology & Hydrology and the UK pollution and conservation agencies including Natural Resources Wales (NRW), the Environment Agency, Northern Ireland Environment Agency, Natural England, the Joint Nature Conservation Committee (JNCC), the Scottish Environment Protection Agency (SEPA), and Scottish Natural Heritage (SNH).","metadataDate":"2026-06-29T15:47:10","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/sd/f83a56ef-15ad-4270-aefd-a6ef4b24b4ee.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"familyName":"Martin Hernandez","givenName":"Cristina","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","address":{"deliveryPoint":"Bush Estate","city":"Penicuik","administrativeArea":"Midlothian","postalCode":"EH26 0QB","country":"United Kingdom"},"fullName":"Martin Hernandez, C.","pointOfContact":"UK Centre for Ecology & Hydrology"}],"publicationDate":"2022-09-05T00:00:00.000Z","publishers":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"reasonChanged":"A mapping error occurred in the ammonia data of CBED 2018-2020. This also translates to an error in total nitrogen deposition. \n\nThe origin of the error is an R software update problem using the library 'proj4' to project to British National Grid which did not project correctly.  Further QC checks have been put in place to help prevent this type of error occurring again. As an update, CBED and APIS - 2019-2021 will be published soon.","resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/f83a56ef-15ad-4270-aefd-a6ef4b24b4ee"},{"code":"10.5285/f83a56ef-15ad-4270-aefd-a6ef4b24b4ee","codeSpace":"doi"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"familyName":"Martin Hernandez","givenName":"Cristina","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","address":{"deliveryPoint":"Bush Estate","city":"Penicuik","administrativeArea":"Midlothian","postalCode":"EH26 0QB","country":"United Kingdom"},"fullName":"Martin Hernandez, C.","pointOfContact":"UK Centre for Ecology & Hydrology"},{"familyName":"Bealey","givenName":"W.J.","organisationName":"UK Centre for Ecology & 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