CMIP6 Data Citation and Long-Term Archival
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I. Data Citation / Data References

Motivation and Concept

For the evolving CMIP6 data disseminated by ESGF (Earth System Grid Federation) an early citation reference is requested by WGCM CMIP6. This citation reference have to meet the requirements of Force 11’s ‘Joint Declaration of Data Citation Principles’ . For the CMIP6 data subset transferred in the long-term archive of the IPCC-DDC (Data Distribution Centre) AR6, the established DataCite data publication using DOIs is planned. The data citations are provided on model and simulation granularities to meet different citation requirements in literature. Core citation information will be displayed in the ESGF portal including a link to the landing page with complete citation information.

The Data Citation of Evolving Data: Recommendations of the RDA Working Group on Data Citation recommend the use of two citations for evolving data: the citation of the full evolving data and the citation of the used data subset. The implementation of an additional ESGF Data Cart content identifier together with the necessary policies for long-term data availability and terms of use for citation are under investigation.

Details of the concept are described in the WIP White Paper .

Information for Modeling Centers

Information for ESGF Data Node Managers and other external service providers

Data Node Managers should check the completion of the data reference information. The citation service provides a specific API for this:
with a JSON formatted response and the following AND-connected attributes: institutionId, sourceId, complete (true|false), drsId

Example Calls:

CMIP6 Data Citation Service Development

User Workflows for the Data Citation Service
Figure 1: Citation Workflows and API for Data Citation Information Access.

The Data Citation Service is funded by DKRZ and BMBF (project: CMIP6-DICAD). The integration of the service in the ESGF was co-ordinated by the ESGF-QCWT (Quality Control Working Team).


II. CMIP6 Long-Term Archival and IPCC-DDC AR6

IPCC-DDC AR6 Reference Data Archive:

  • Metadata Enrichment with information on model, simulation, experiment, errata, citation, quality based on the CMIP6 Controled Vocabulary and ancillary metadata resources available via the ESGF index
  • Long-Term Archival (LTA) of CMIP6 snapshot data in WDCC (World Data Center for Climate) and DataCite DOI registration
  • Transfer of LTA data into IPCC-DDC AR6 and documentation on web pages

IPCC-DDC support of IPCC AR6 Working Groups and authors



M. Stockhause, M. Juckes, R. Chen, W. Moufouma Okia, A. Pirani, T. Waterfield, X. Xing, R. Edmunds (2019): Data Distribution Centre Support for the IPCC Sixth Assessment. Data Science Journal, 18(1), p.20. doi:10.5334/dsj-2019-020 .
P. J. Durack, K. E. Taylor, V. Eyring, S. K. Ames, T. Hoang, D. Nadeau, C. Doutriaux, M. Stockhause, P. J. Gleckler (2018): Toward standardized data sets for climate model experimentation. Eos, 99. doi:10.1029/2018EO101751 . Published on 02 July 2018.
M. Stockhause and M. Lautenschlager (2017): CMIP6 Data Citation of Evolving Data. Data Science Journal. 16, p.30. doi:10.5334/dsj-2017-030 .
M. Stockhause, F. Toussaint, M. Lautenschlager (2015): CMIP6 Data Citation and LTA. WIP white paper. Zenodo. doi:10.5281/zenodo.35178 .
M. Stockhause, F. Toussaint, F., M. Lautenschlager (2015): CMIP6 Data Citation and Long-Term Archival. WIP White Paper. Zenodo. .
M. Stockhause, H. Höck, F. Toussaint, and M. Lautenschlager (2012): Quality assessment concept of the World Data Center for Climate and its application to CMIP5 data. Geosci. Model Dev., 5, 1023-1032. 2012. doi:10.5194/gmd-5-1023-2012 .


M. Stockhause, Martina, M. Lautenschlager (2019): The importance of data references in CMIP6 data usage and IPCC climate assessments. CMIP6 Model Analysis Workshop, 25-28 March 2019, Barcelona, Spain. Zenodo. doi:10.5281/zenodo.2621084 .
M. Stockhause, M. Lautenschlager (2017): Data citation in climate sciences: Improvements in CMIP6 compared to CMIP5. AGU 2017, New Orleans, USA. Zenodo. doi:10.5281/zenodo.1148953 .
M. Stockhause, M. Lautenschlager (2017): CMIP6 Data Citation and IPCC Data Distribution Centre Services. PICO presentation at EGU 2015, Vienna, Austria. Zenodo. doi:10.5281/ZENODO.5696466 .
M. Stockhause (2016): Long-term archiving Workflow for CMIP6. Zenodo. doi:10.5281/ZENODO.157358 .
K. Berger, G. Levavasseur, M. Stockhause, and M. Lautenschlager (2015): Integration of external metadata into the Earth System Grid Federation (ESGF). PICO presentation at EGU 2015, Vienna, Austria. .
M. Stockhause (2014): Long-term archiving workflow in CMIP5 - a first review. Zenodo. doi:10.5281/zenodo.29104 .


Data Citation
(ESGF Conference 2015, Monterey, CA, USA.)
Data Citation
(ESGF Conference 2016, Washington DC, USA.)
(ESGF Conference 2016, Washington DC, USA.)
Data Citation IPCC DDC
(CMIP6 Model Analysis Workshop, 25-28 March 2019, Barcelona, Spain.)


CMIP6 Citation (this page):
DDC Support:
DDC Support:

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