SCAIL - Combustion 

June 11th, 2024: SCAIL background pollution maps for the UK have been updated to the the years 2020-2022 in line with current APIS (see announcement). We have also introduced a new Hybrid mode for users (see User Guide for details of how to use it).

September 9th, 2024: We are aware of a reporting issue in the output spreadsheet when using the hybrid mode, causing percentages of the first of the nine runs to be reported nine times; we recommend percentages to be recalculated using the appropriate ratios, and will bring a fix as soon as possible. Values displayed from the web tool are not affected by this issue.

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NOTICE SCAIL agriculture and SCAIL combustion have been updated in May 2023 with new meteorological stations (see maps displaying the original set (red) and the set that was added (blue)). Whereas the SCAIL tool implementation changed only marginally since, substantial changes in estimates may be noticed if running a former case, as SCAIL may now use a different meteorological station. If you are unsure about your meteorological station, it is indicated in the .INP file after the keywords ME SURFFILE and ME PROFFILE (4 letters abbreviation). It is also specified in the Results page under Site Information.

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Simple Calculation of Atmospheric Impact Limits from Combustion Sources (SCAIL-Combustion) is a screening tool for assessing the impact from combustion plant on semi-natural areas like SSSIs and SACs. The model provides an estimate of the amount of acidity, nitrogen and sulphur deposited on a habitat from the combustion source. This value can then be used to assess whether impact limits for the habitats are exceeded or not.

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