Parent Layer: Background Air Pollution 2021-2040

Name: Particulate Matter 10 µm (PM10)

Display Field: X

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Air pollution background concentration maps are published by Defra and the Devolved Administrations to assist local authorities in carrying out Review and Assessment of local air quality as part of their duties under the Environment Act 1995, as amended in 2021. The background maps contain estimates of pollutant concentrations based on an average over a year (annual average). this is measured in micrograms per cubic meter (µg/m3).The main purpose of the background maps is to provide estimates of background concentrations for specific pollutants. These can then be used in air quality assessments to better understand the contribution of local sources to total pollutant concentrations. They provide information on how pollutant concentrations change over time and across a wide area. They also provide an estimated breakdown of the relative sources of pollution. The maps allow for the assessment of new pollutant sources that are introduced into an area and the impact they may have upon local air quality.UK background maps are made available for a reference year and projection years for a range of pollutants including oxides of nitrogen (NOx), nitrogen dioxide (NO2) and particulate matter (PM10 and PM2.5).New background maps are released by Defra periodically due to updates to the underlying data, including emissions factors. Local authorities should use the most up-to-date data and supporting tools made available, which have been updated for their use with the 2021 reference year maps.

Copyright Text: © Crown copyright 2024 Defra via uk-air.defra.gov.uk, licenced under the Open Government Licence (OGL).

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Extent:

XMin: 444000.00009999983
YMin: 322000.00009999983
XMax: 489000.00009999983
YMax: 401000.00009999983
Spatial Reference: 27700  (27700)  LatestVCSWkid(0)

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• TOTAL_PM10_2021 ( type: esriFieldTypeDouble, alias: 2021 - Reference Year )
• TOTAL_PM10_2022 ( type: esriFieldTypeDouble, alias: 2022 )
• TOTAL_PM10_2023 ( type: esriFieldTypeDouble, alias: 2023 )
• TOTAL_PM10_2024 ( type: esriFieldTypeDouble, alias: 2024 )
• TOTAL_PM10_2025 ( type: esriFieldTypeDouble, alias: 2025 )
• TOTAL_PM10_2026 ( type: esriFieldTypeDouble, alias: 2026 )
• TOTAL_PM10_2027 ( type: esriFieldTypeDouble, alias: 2027 )
• TOTAL_PM10_2028 ( type: esriFieldTypeDouble, alias: 2028 )
• TOTAL_PM10_2029 ( type: esriFieldTypeDouble, alias: 2029 )
• TOTAL_PM10_2030 ( type: esriFieldTypeDouble, alias: 2030 )
• TOTAL_PM10_2031 ( type: esriFieldTypeDouble, alias: 2031 )
• TOTAL_PM10_2032 ( type: esriFieldTypeDouble, alias: 2032 )
• TOTAL_PM10_2033 ( type: esriFieldTypeDouble, alias: 2033 )
• TOTAL_PM10_2034 ( type: esriFieldTypeDouble, alias: 2034 )
• TOTAL_PM10_2035 ( type: esriFieldTypeDouble, alias: 2035 )
• TOTAL_PM10_2036 ( type: esriFieldTypeDouble, alias: 2036 )
• TOTAL_PM10_2037 ( type: esriFieldTypeDouble, alias: 2037 )
• TOTAL_PM10_2038 ( type: esriFieldTypeDouble, alias: 2038 )
• TOTAL_PM10_2039 ( type: esriFieldTypeDouble, alias: 2039 )
• TOTAL_PM10_2040 ( type: esriFieldTypeDouble, alias: 2040 )
• X ( type: esriFieldTypeDouble, alias: X )
• Y ( type: esriFieldTypeDouble, alias: Y )
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