EMEPai v1.0.0: Archive of source code for training and inference, and checkpoint and input data for inference

This archive contains the data, configuration files, a trained model checkpoint, and the Anemoi package versions required to reproduce the evaluation of EMEPai, as described in **EMEPai 1.0.0: A fast regional data-driven air-quality forecast model for Europe** ([DOI]). It includes: Zarr archive for the evaluation years 2022-2023 Model checkpoint used in the manuscript requirements.txt specifying the Anemoi package versions Anemoi configuration files for training, and an example for running inference. The model is implemented using the open-source Anemoi framework. For documentation of the Anemoi framework, see the [Anemoi documentation](https://anemoi.readthedocs.io/en/latest/). The source code for Anemoi is available from the [Anemoi GitHub repository](https://github.com/ecmwf/anemoi). License information: Data and products produced by the Norwegian Meteorological Institute (MET Norway) and included in this archive are licensed under the Norwegian License for Open Government Data (NLOD) 2.0 https://data.norge.no/nlod/no/2.0 and under the Creative Commons Attribution 4.0 International (CC BY 4.0) license. EMEP/CEIP emissions The emission fields included in this archive correspond to those used in the EMEP model configuration described in the EMEP 2025 status report (MSC-W et al., 2025). The EMEP/CEIP gridded emissions are published under the Creative Commons Attribution 4.0 International (CC BY 4.0) license. License and source information: https://www.ceip.at/the-emep-grid/gridded-emissions