A collaborative community for planetary sciences.

The American Geophysical Union publishes several journals, and SHERPA/romeo lists them as a GREEN publisher.

Their Permissions and Copyright Information page lays things out and links to their Copyright Agreements. While their page does not explicitly say so, when you self-archive an AGU paper, you must post one that you have formatted yourself, not the PDF produced by the AGU. Their assistant director for journals cleared this up in a June 2005 e-mail:

We allow authors to post the unformatted article, but not the official final version after copyediting and processing for which AGU maintains the copyright.