S-RIP – SPARC Reanalysis Intercomparison Project

Activity leads

Masatomo Fujiwara
Hokkaido University, Japan

Lesley Gray
University of Oxford, UK

Gloria Manney
NorthWest ResearchAssociates (also at New Mexico Institute of Mining and Technology), USA

Chapter co-leads

Description of the Reanalysis Systems
Jonathon Wright, Tsinghua University, China
Masatomo Fujiwara, Hokkaido University, Japan
Craig Long, NOAA, USA

Climatology and Interannual Variability
Craig Long, NOAA, USA
Michaela Hegglin, University of Reading, UK
Sean Davis, NOAA, USA

Brewer–Dobson Circulation
Thomas Birner, Ludwig-Maximilians-Universität, München (also at DLR, Oberpfaffenhofen), Germany
Beatriz Monge-Sanz, ECMWF, UK

Stratosphere–Troposphere Coupling
Edwin Gerber, New York University, USA
Patrick Martineau, The University of Tokyo, japan

Extratropical Upper Troposphere and Lower Stratosphere
Cameron Homeyer, University of Oklahoma, USA
Gloria Manney, NorthWest Research Associates, USA

Tropical Tropopause Layer
Susann Tegtmeier, GEOMAR, Germany
Kirstin Krüger, University of Oslo, Norway

Quasi-Biennial Oscillation and Tropical Variability
James Anstey, CCCma, Canada
Lesley Gray, University of Oxford, UK

Polar Processes
Michelle Santee, NASA JPL, USA
Alyn Lambert, NASA JPL, USA
Gloria Manney, NorthWest Research Associates, USA

Upper Stratosphere and Lower Mesosphere
Lynn Harvey, University of Colorado, USA
John A. Knox, University of Georgia, USA

For other participants, see

Activity Description

The SPARC community has used reanalysis and analysis datasets to understand atmospheric processes, variability of the stratosphere and upper troposphere, and to validate chemistry-climate models. With the availability of several global reanalysis datasets, we have started a coordinated activity to compare all (or some of the newer) reanalysis datasets for various “key” diagnostics, to understand the causes of the differences, to use the results to provide guidance on appropriate usage of various reanalysis products in scientific studies, and to connect such activities with future improvements of these products. The “key” diagnostics cover various aspects, including those of importance for middle atmosphere science and those with large impact on reanalysis improvements.

The SPARC Reanalysis Intercomparison Project (S-RIP) includes a co-operation between reanalysis centres and scientists from SPARC and other groups. We had dedicated annual workshops during 2014-2017. The SPARC Report in the SPARC report series is scheduled to be published in 2019.

Published results

ACP/ESSD inter-journal special issue on The SPARC Reanalysis Intercomparison Project (S-RIP)
Papers submitted and published to the S-RIP special issue can be viewed here (ACP) or here (ESSD).

Journal publications:

Fujiwara, M. et al., 2017: Introduction to the SPARC Reanalysis Intercomparison Project (S-RIP) and overview of the reanalysis systems. Atmos. Chem. Phys. 17, 1417-1452, doi: 10.5194/acp-17-1417-2017.

Long, C. S. et al., 2017: Climatology and interannual variability of dynamic variables in multiple reanalyses evaluated by the SPARC Reanalysis Intercomparison Project (S-RIP). Atmos. Chem. Phys. 17, 14593-14629, doi: 10.5194/acp-17-14593-2017.

 Davis, S. M. et al., 2017: Assessment of upper tropospheric and stratospheric water vapour and ozone in reanalyses as part of S-RIP. Atmos. Chem. Phys. 17, 12743-12778, doi: 10.5194/acp-17-12743-2017.

See also: https://s-rip.ees.hokudai.ac.jp/pubs/intercomp.html

SPARC activity updates:

SPARC Newsletter, No.50 (2018) p. 26–29: The 2017 S-RIP workshop and the 13th SPARC data assimilation workshop, by J. McCormack, J., M. Fujiwara, Q. Errera, L. Gray, G. Manney, B. Monge-Sanz, and R. Dragani  

SPARC Newsletter, No.48 (2017), p. 41–44: The 12th SPARC Data Assimilation Workshop and 2016 S-RIP Workshop, by M. Fujiwara, Q. Errera, L. J. Gray, G. L. Manney, J. McCormack, and J. Anstey

SPARC Newsletter No. 47 (2016), p. 12: The 2015 SPARC Reanalysis Intercomparison Project (S-RIP) workshop and the 11th SPARC data assimilation workshop, by Q. Errera, M. Fujiwara, and B. Legras

SPARC Newsletter No. 44 (2015), p. 31: Report on the 10th SPARC Data Assimilation Workshop and the 2014 SPARC Reanalysis Intercomparison Project (S-RIP) workshop in Washington DC, USA, by Q. Errera, M. Fujiwara, C. Long, and D. Jackson.

SPARC Newsletter No. 41 (2013), p. 52: SPARC Reanalysis Intercomparison Project (S-RIP) Planning Meeting, 29 April-1 May 2013, Exceter, UK, by M. Fujiwara, and D. Jackson

SPARC Newsletter No. 38 (2012), p. 14: A proposal of the SPARC Reanalysis/Analysis Intercomparison Project, by M. Fujiwara, S. Polavarapu, D. Jackson

Website for further information