CMIP6 Citation Service in context of data citation principles and IPCC's 6th assessment cycle and its uncertain future

The CMIP6 Citation Service as part of the infrastructure for CMIP6 (Coupled Model Intercomparison Project Phase 6) enable the citation of CMIP data for the first time. Data references are planned to compliment paper references in the next IPCC (Intergovernmental Panel on Climate Change) assessment report AR6 (Stockhause et al., 2019). More specific IPCC author guidelines are about to be sent to the authors in early 2020. The goal is twofold:

• to improve the transparency of the AR6 by an increased traceability of its key results, and
• to give credit to the providers of source data analysed by the authors.

The IPCC author guidelines implement the general author guidelines for data citation developed within the 'Enabling FAIR data project' (Stall et al., 2017). Many publishers and repositories have subscribed these guidelines. Apart from FAIR (Findable, Accessible, Interoperable, Reusable), the long-term preservation and curation of the AR6 data in the trusted (TRUST: Transparency, Responsibility, Users, Sustainability, Technology) repository of the IPCC Data Distribution Centre (DDC) is part of IPCC's new author guidance.

The CMIP6 Citation Service itself recommends to cite input4MIPs (Durack et al., 2019) data as well as papers underpinning the CMIP6 data.

Implementation and maintenance as well as documentation and support for the CMIP6 Citation Service relies on institutional resources and an increasing share of my spare time. As many other infrastructure components for international projects, the service has no substantial nor long-term funding. Thus my institution has to be convinced that investing in the CMIP6 citation service is worthwhile, which requires

• usage numbers and
• user stories / feedback.

Thus, I cordially invite you to leave comments to share your opinion about the CMIP6 Citation Service - its value, your usage and experiences of it as well as your ideas for its further development and sustainable funding or anything else you want to share.

References and Links:
Durack et al. (2018). Toward standardized data sets for climate model experimentation, Eos, 99, https://doi.org/10.1029/2018EO101751. Published on 02 July 2018.
Stall et al. (2017). Enabling FAIR data across the Earth and space sciences, Eos, 98, https://doi.org/10.1029/2017EO088425. Published on 08 December 2017.
Stockhause et al. (2019). Data Distribution Centre Support for the IPCC Sixth Assessment. Data Science Journal, 18(1), p.20. https://doi.org/10.5334/dsj-2019-020.
Coupled Model Intercomparison Project Phase 6 (CMIP6): http://pcmdi.llnl.gov/CMIP6/
CMIP6 Citation Service: http://cmip6cite.wdc-climate.de 
CMIP6 Citatin Service Statistics: http://bit.ly/CMIP6_DOI_Statistics
Coalition for Publishing Data in the Earth and Space Sciences (COPDESS): http://www.copdess.org/enabling-fair-data-project/
Intergovernmental Panel on Climate Change (IPCC): http://www.ipcc.ch
IPCC Data Distribution Centre (DDC): http://www.ipcc-data.org