Many journals in the Earth and space sciences now explicitly allow posting of content on not-for-profit preprint servers, prior to (or concurrent with) submission to the journal. For further information, see the list of journals on SHERPA/RoMEO and select a journal for policy information. Before submitting content to ESS Open Archive, authors are strongly encouraged to check policies at specific journals as some require specific license types for preprints. If you are unsure, we recommend the use of a non-exclusive license.