See the following notification from the SPARC International Project Office potentially useful to the NDACC Community:
"In a comprehensive review, the SPARC S-RIP activity has conducted a coordinated intercomparison of reanalysis data sets with respect to key diagnostics. The results can be used to provide guidance on the appropriate use of reanalysis products in scientific studies of relevance to SPARC and beyond.
The SPARC Reanalysis Intercomparison Project (S-RIP) Final Report, available at https://www.sparc-climate.org/sparc-report-no-10/, is an _early online release_ of the final report of the SPARC S-RIP Activity. This version has been reviewed in a blind peer-review process, and type-setting has been done to produce this early version of the report. To finalise the report, editorial work needs to be completed, which will not change the contents of the report.
The report is edited by the SPARC S-RIP activity team: https://www.sparc-climate.org/activities/reanalysis-intercomparison/ and https://s-rip.ees.hokudai.ac.jp/"