Preprint services for environmental and earth sciences?

I just found the following article (open access version) published in 2013 which lists 7 repositories for the earth sciences:

• CEDA Repository
• Earth-prints Repository
• Institution Aquatic Commons
• Organic Eprints
• AgEcon Search
• Open Knowledge Environment of the Caribbean
• antbase.org

I haven't checked the actuality of this list.

Since this question was first asked, two repositories that are not in the answer above should be mentioned:

Earth Arxiv, run by the Open Science Framework, and the Earth and Space Science Open Archive ESSOAr, which co-run by the American Geophysical Union.