Researchers in climate research need collaborative infrastructures to handle the growing amount of data. These infrastructures have to support users in finding, accessing and sharing climate data for data analysis activities and can provide higher level services for data life cycle management such as metadata generation, persistent data product identification, data description and sharing. The Collaborative Climate Community Data and Processing Grid infrastructure (C3Grid) provides a national infrastructure for climate data access and processing. It is now evolving from a prototype to a production infrastructure providing valuable services to users. We will put special emphasis on those aspects supporting users to manage complex multi model analysis tasks of e.g. CMIP5 data and sharing of their analysis results.