NO2 Adjustment for NOx Sector Removal Tool
Overview The national map of background NOx concentrations is split into source sectors. When NOx is removed from different sectors, for example to avoid double
Overview The national map of background NOx concentrations is split into source sectors. When NOx is removed from different sectors, for example to avoid double
Overview This calculator allows users to derive NO2 from NOx wherever NOx is predicted by modelling emissions from roads. The calculator can also be used to calculate the
Overview The Emissions Factors Toolkit (EFT) is published by Defra and the Devolved Administrations to assist local authorities in carrying out Review and Assessment of
Overview As part of their provision of support to local authorities for air quality management, Defra and the Devolved Administrations provide a set of centralised
Change Over Dates 2025 Suggested Exposure Periods (2025) Period Start Date End Date Duration (weeks) January 8 January 5 February 4 February 5 February 5
Overview The spreadsheet of diffusion tube co-location results, used for calculating a national bias adjustment factor, also contains information on the precision of the diffusion
A database, in the form of an Excel spreadsheet, of bias adjustment factors determined from local authority co-location studies throughout the UK has been collated by the Local Air Quality Management Helpdesk.
Overview The below examples of Detailed Assessments and Detailed Modelling Studies show a range of approaches taken by local authorities in order to provide additional
Overview The table below provides the 99.8th percentile concentrations of total oxidant (i.e. NOx+O3, as NO2) for all AURN sites where data is available, for
Overview The table provided in the document below provides emission factors for small combustion appliances, for NOx, PM10 and PM2.5, in units of g/GJ, as taken from
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