Average Accumulated Exceedance (AAE) of critical loads of acidity and nutrient nitrogen by acid and nitrogen deposition for the UK, 2019-2021

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Environmental Information Data Centre
Last updated:
24 March 2025
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Summary

This data resource consists of two files: (a) 1x1 km resolution Average Accumulated Exceedance (AAE) data summarising the exceedances of acidity critical loads for eight habitats; (b) 1x1 km resolution summarising the exceedances of nutrient nitrogen critical loads for thirteen habitats. The data provide information on the amount of excess acid or nitrogen deposition above the critical load values set to protect acid- and nitrogen-sensitive habitats in the UK. The AAE has been calculated using UK 1x1 km Concentration Based Estimated Deposition (CBED) data for 2019-21 (see related data collection). The data were generated under Defra-funded work to assess the potential areas of acid and nitrogen sensitive habitats at risk of adverse impacts from excess atmospheric acid and nitrogen deposition. Reducing the area and amount of critical load exceedance continues to be a driver of Government policy on reducing emissions of acidic and nitrogen-containing air pollutants (sulphur dioxide, nitrogen oxides and ammonia). Full details about this dataset can be found at https://doi.org/10.5285/959a71fe-3340-4a0f-83b3-1cc981709502

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Link to the data Format File added Data preview
Supporting information ZIP 24 March 2025 Not available
Download the data N/A 24 March 2025 Not available

Additional information

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Added to data.gov.uk
2025-03-21
Access contraints
© Crown copyright and database right
Harvest GUID
959a71fe-3340-4a0f-83b3-1cc981709502
Extent
Latitude: 60.861° to °
Longitude: -8.648° to 1.768°
Spatial reference system
Dataset reference date
2024-09-27 (publication)
2024-07-29 (creation)
Frequency of update
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(author, publisher, pointOfContact, custodian, owner)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
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