{"ob_id":43429,"uuid":"7d44ef2a9e9346e79863f53193db189e","title":"UK Air Quality Reanalysis (AQREAN): Bias Corrected Surface Level","abstract":"The UK Air Quality Reanalysis (AQREAN) combines an air quality forecast model with a bias-correction post-processing system, incorporating ground-based pollutant observations, to give an improved estimate of pollutant levels for the UK. \r\n\r\nThe data covers the UK at the surface level on a 0.1degree horizontal grid, at hourly time resolution. \r\n\r\nThis dataset contains the following species:\r\n\t• Particulate matter, with diameter < 2.5 µm (PM2.5)\r\n\t• Particulate matter, with diameter < 10 µm (PM10)\r\n\t• Ozone (O3)\r\n\t• Nitrogen Monoxide (NO)\r\n\t• Nitrogen Dioxide (NO2)\r\n\t• Sulphur Dioxide (SO2)\r\n\t• Carbon Monoxide (CO)\r\n\r\nThe Daily Air Quality Index (DAQI) is also included, along with the species-specific DAQI for the contributing pollutants. \r\n\r\nNote: \r\n• AQREAN is only representative of ambient background pollutant concentrations. \r\n• Data is masked to include only land-based locations as no observations are included to support the bias corrections over the ocean.","keywords":"SPF,Clean Air,Met Office,Air Quality,UK,Reanalysis","publicationState":"published","dataPublishedTime":"2025-03-05T12:08:10","doiPublishedTime":null,"updateFrequency":"notPlanned","status":"ongoing","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/43548/?format=json","dataPath":"/badc/deposited2025/AQREAN","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":52620806507,"numberOfFiles":225,"fileFormat":"NetCDF"},"timePeriod":"https://catalogue.ceda.ac.uk/api/v2/times/12077/?format=json","geographicExtent":"https://catalogue.ceda.ac.uk/api/v2/bboxes/4673/?format=json","nonGeographicFlag":false,"phenomena":["https://catalogue.ceda.ac.uk/api/v2/phenomona/6023/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/9042/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/9043/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/19043/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/51186/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/51187/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/62353/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74897/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74898/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74899/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74900/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74901/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74902/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74903/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74904/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74905/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/74906/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/80046/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/80047/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/80048/?format=json","https://catalogue.ceda.ac.uk/api/v2/phenomona/80049/?format=json"],"dataLineage":"Data were collected and processed by the project team at the Met Office and submitted to the Centre for Environmental Data Analysis (CEDA).","removedDataTime":null,"removedDataReason":"","language":"English","identifier_set":[],"projects":["https://catalogue.ceda.ac.uk/api/v2/projects/43430/?format=json"],"observationcollection_set":[],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/207955/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/206725/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/206726/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/206727/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/206728/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/206729/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/207123/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/206724/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/207124/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/207125/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/207126/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/207127/?format=json"],"procedureAcquisition":null,"procedureCompositeProcess":null,"procedureComputation":"https://catalogue.ceda.ac.uk/api/v2/computations/5706/?format=json","permissions":[{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/2526/?format=json","useLimitation":null,"accessConstraints":null,"accessCategory":"public","accessRoles":null,"label":"public: None group","licenceURL":"http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/","licenceClassifications":"any, attribution required"}],"discoveryKeywords":[]}