Clean Air Journal allows for submission of manuscripts that have been placed on preprint servers. It is the responsibility of the author to ensure the licensing type of the preprint platform is compatible with the Creative Commons License Attribution 4.0 International License that is use by the Clean Air Journal. Authors are required to disclose preprints and confirm the licensing type is compatible in their cover letter at submission.
The preprint citation together with DOI (if applicable) and/or website link should be stated in the Acknowledgements section of the submitted manuscript. If the manuscript is accepted to be published in the Clean Air Journal, the authors cannot update the preprint to reflect changes made to the manuscript during the peer-review process.