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| World Data Center for Climate (WDCC) | |
|---|---|
| Name | World Data Center for Climate (WDCC) |
| Formation | 2009 |
| Type | Data repository |
| Headquarters | Hamburg |
| Parent organization | Deutsches KlimaRechenzentrum |
World Data Center for Climate (WDCC)
The World Data Center for Climate (WDCC) is a major climate data repository hosted in Hamburg that archives and distributes large-scale climate model outputs and observational datasets to support international IPCC assessments, WCRP projects, and operational research. It serves academic, governmental, and intergovernmental users by providing curated Earth system model archives, reanalysis products, and impact-relevant datasets for use in studies by entities such as ECMWF, MPI-M, and DKRZ. The center underpins work across initiatives including CMIP, CorDEX, and Global Carbon Project.
The WDCC functions as a long-term data archive and dissemination hub integrating datasets from projects like CMIP6, CMIP5, and regional experiments under CORDEX. It links storage and access services to high-performance compute environments at institutions such as DKRZ and connects user communities spanning Max Planck Society, Helmholtz Association, ESA, and national meteorological services including DWD and Met Office. The repository architecture supports researchers working within frameworks such as WMO programs, IGBP legacies, and cross-disciplinary consortia like Future Earth.
The archive evolved from legacy data centers associated with the World Data Center system and expanded in response to demand from the AR5 and subsequent assessment cycles. Collaboration with computational and modeling centers — for example EUMETSAT, NOAA, and NASA modeling teams — drove technical enhancements. WDCC milestones include large-scale ingestion of CMIP5 output, migration to federated storage with partners such as DKRZ and GES DISC, and alignment with data stewardship principles from initiatives like FAIR data advocacy promoted by CODATA and RDA stakeholders.
Collections include multi-model ensembles from CMIP6 and predecessor experiments, observational syntheses from programs such as GPCP, satellite retrievals from MODIS and Sentinel missions, and reanalysis products like ERA-Interim and ERA5. The holdings encompass atmosphere, ocean, land surface, and cryosphere fields produced by modeling groups at NCAR, GFDL, Hadley Centre, IPSL, and Météo-France. Paleoclimate datasets from projects like PMIP and biogeochemical archives tied to Global Carbon Project inventories are also curated alongside impact-relevant layers used by agencies such as UNFCCC and UNEP.
WDCC provides data services including cataloging, metadata compliant with standards from CF Convention initiatives, DOI issuance in cooperation with DataCite, and user authentication integrated with eduGAIN and institutional federations. Users access datasets via protocols like OPeNDAP, THREDDS, and gridFTP, and through portals interoperable with C3S and ESGF. Training, helpdesk support, and data citation guidance are provided to researchers from institutions like University of Hamburg, ETH Zurich, and Imperial College London.
The WDCC uses high-capacity tape and disk storage arrays, parallel file systems, and archival systems co-located with supercomputing centers such as HLRN and JSC. Technical stacks integrate data management tools like ESGF nodes, catalog services influenced by ISO 19115 standards, and containerized services leveraging platforms including Kubernetes for web services. Long-term preservation strategies align with practices advocated by DCC and OAIS models, enabling reproducible workflows used by groups such as PANGEA and Zenodo users.
Governance involves partnerships among German national centers, European research infrastructures, and international programs; stakeholders include DKRZ, WCRP, IPCC, and funding bodies like the BMBF. Collaborative agreements with data providers — for example MPI-M, NCAR, ECMWF — define ingestion, embargo, and citation policies. WDCC participates in interoperability efforts with ESGF, Copernicus, and research data networks coordinated by EUDAT and GEANT to harmonize access and stewardship across consortia including CLIPC and IS-ENES.
Data from WDCC support climate attribution studies cited in AR6, regional impact assessments used by European Commission services, and sectoral analyses for World Bank climate risk projects. Researchers at universities and institutes such as University of Oxford, Princeton University, Scripps Institution of Oceanography, and Columbia University use WDCC holdings for model intercomparison, downscaling studies informing C40 Cities planning, and mitigation analyses in support of UNFCCC policy dialogues. The archive enables reproducible science in climate modeling, paleoclimate reconstruction, and integrated assessment modeling performed by teams at IIASA, PIK, and other global centers.
Category:Climate data archives