The Research Data Alliance, has set up the Domain Repositories Interest Group. This group is an addition to already existing interest groups within the RDA. The purpose and objectives of this group are stated on the group's page which are reproduced below.
About the Domain Repositories Interest Group
"The Domain Repositories Interest Group will bring together active data repositories that serve specific scientific disciplines. Domain repositories provide archiving services tailored to the needs of scientific communities, and they mediate between domain scientists and rapid changes in information and data science. All domain repositories have shared interests in data curation, dissemination, preservation, and institutional sustainability, and this interest group will provide a forum for sharing practical experience and developing joint projects. The IG will also develop training and mentoring relationships for new and emerging repositories"
George Alter, Inter-university Consortium for Political and Social Research, University of Michigan
Peter Doorn, Data Archiving and Networked Services
Ruth E. Duerr, National Snow and Ice Data Center, University of Colorado
Robert J. Hanisch, Virtual Astronomical Observatory, Space Telescope Science Institute
More information here