This version is considerably faster and all the known bugs have been corrected. The “Results” tab has changed with new features. The APIS data for the midyear 2019 (2018, 2019 and 2020) has been released with this new version now at 1 Km2 resolution (previously 5 Km2). You will also be able to query Source Attribution data for any grid square of the UK and we have also added a Critical Loads Screening tool for acidity.
In 2021 we updated the Source Attribution dataset in APIS from emission year 2012 to a emission year 2018. In this data we included Ireland as a separate footprint source . An error has been discovered with the footprint calculations for Ireland and Europe. To calculate the footprints the model is run several times removing 75% of each source. Those layers are compared to the baseline to calculate the footprint for each source, but the Europe Import footprint was overestimated (as it included the Irish footprint).
For APIS Source Attribution pies this means that the proportion of all the sources of a site was affected especially those sites in Northern Ireland. The error has been fixed and the data re-calculated.
We apologise for any inconveniences this might have caused.
APIS database is going to be temporarily down for maintenance on 28th of April at 17:30. This will affect the functionality of the website. Apologies for any inconvenience this may cause.
APIS server is going to be temporarily down for maintenance on 25th to 29th of November. This will affect the functionality of the website. Apologies for any inconvenience this may cause.
The purpose of UK APIENs (Air Pollution Impacts on Ecosystem Networks) is to monitor and report the negative impacts of air pollution (e.g. acidification, eutrophication, ozone damage or changes in biodiversity) on ecosystems that are representative of freshwater, natural and semi-natural habitats and forests in the UK.