ESS Open Archive has a broad scope that covers all aspects of research in the Earth, environmental, and space sciences. Preprints may be preliminary manuscripts not yet published in a peer-reviewed outlet, such as a journal or book chapter. We also accept posters and presentations (as PDF files) presented at recognized scientific conferences. Posted material should be equivalent to what is typically contained in a scholarly research manuscript, including an abstract and references. Limited Supplemental Files necessary for understanding the preprint or poster and directly related to the primary content are also supported, including Jupyter notebooks. Extensive data or data sets or other supporting content should be deposited in repositories and referenced appropriately. Additional information is available in the Submission Guide. The community ESS Open Archive serves is diverse, but content that does not have direct relevance to the Earth, environmental, or space sciences could be posted on one of the complementary existing preprint services, such as arXiv.org, bioRxiv, ChemRxiv, or EarthArXiv.