SPARC Reanalysis Intercomparison Project (S-RIP): Status in 2021

The SPARC (Stratosphere-troposphere Processes And their Role in Climate) Reanalysis Intercomparison Project (S-RIP, https://s-rip.ees.hokudai.ac.jp/) is a coordinated activity to: (1) compare all (or some of the newer) reanalysis data sets for various key diagnostics in the stratosphere, upper troposphere, and lower mesosphere; (2) understand the causes of differences among reanalyses; (3) provide guidance on the appropriate usage of various reanalysis products in scientific studies; and (4) connect such activities with future improvements in the reanalysis products by establishing collaborative links between the reanalysis centers and the SPARC community. In July 2021, the S-RIP published the Final Report with 12 chapters as early online release (https://www.sparc-climate.org/sparc-report-no-10/). In the presentation, we will provide key findings and recommendations from this Final Report.