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    C3Grid (Collaborative Climate Community Data and Processing Grid) was a common initiative of institutions of the German Climate community. Aim of the effort was to develop an infrastructure for uniform access to heterogeneous data and distributed data processing. The work was structured in two projects funded by the Federal Ministry of Education and Research. The first project was part of the D-Grid initiative and explored the potential of grid technology for climate research and developed a prototype infrastructure. Details about the C3Grid architecture are described in “Earth System Modelling – Volume 6”. In the second phase "C3Grid - INAD: Towards an Infrastructure for General Access to Climate Data" this infrastructure was improved especially with respect to interoperability to Earth System Grid Federation (ESGF). Further the portfolio of available diagnostic workflows was expanded.

    These workflows can be re-used now in adjacent infrastructures MiKlip Evaluation Tool ( and as Web Processes within the Birdhouse Framework (

    The Birdhouse Framework is now funded as part of the European Copernicus Climate Change Service ( managed by ECMWF and will be extended to provide scalable processing services for ESGF hosted data at DKRZ as well as IPSL and BADC.




    Figure: Usage of C3Grid for data discovery and analysis