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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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https://doi.org/10.5194/gmd-2020-133
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-2020-133
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: development and technical paper 24 Jun 2020

Submitted as: development and technical paper | 24 Jun 2020

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This preprint is currently under review for the journal GMD.

A New End-to-End Workflow for the Community Earth System Model (version 2.0) for CMIP6

Sheri Mickelson, Alice Bertini, Gary Strand, Kevin Paul, Eric Nienhouse, John Dennis, and Mariana Vertenstein Sheri Mickelson et al.
  • The National Center for Atmospheric Research, Boulder, CO, USA

Abstract. The complexity of each Coupled Model Intercomparison Project grows with every new generation. The Phase 5 effort saw a large increase in the number of experiments that were performed and the number of variables that were requested compared to its previous generation, Phase 3. Many centers were not prepared for the large demand and this stressed the resources of several centers including at the National Center for Atmospheric Research. During Phase 5, we missed several deadlines and we struggled to get the data out to the community for analysis. In preparation for the current generation, Phase 6, we examined the weaknesses in our workflow and addressed the performance issues with new software tools. Through this investment, we were able to publish approximately six times the amount of data to the community compared to the volumes we produced in the previous generation and we were able to accomplish this within one-third of the time, providing an 18 times speedup. This paper discusses the improvements we have made to accomplish this success for Phase 6 and further improvements we hope to make for the next generation.

Sheri Mickelson et al.

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Status: open (until 19 Aug 2020)
Status: open (until 19 Aug 2020)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Sheri Mickelson et al.

Model code and software

PyReshaper (version 1.0.6) K. Paul, S. Mickelson, J. Dennis, and H. Xu https://doi.org/10.5281/zenodo.3894842

pyAverager (Version v0.9.16) S. Mickelson, K. Paul, and J. Dennis https://doi.org/10.5281/zenodo.3894862

PyConform (Version PyConform-0.2.8) K. Paul, S. Mickelson, and J. Dennis https://doi.org/10.5281/zenodo.3895009

CESM Postprocessing (Version CESM_postprocessing_v2.2.1) A. Bertini and S. Mickelson https://doi.org/10.5281/zenodo.3895033

CESM Workflow (Version v1.0) S. Mickelson https://doi.org/10.5281/zenodo.3895058

CESM-release-cesm2.1.0 Danabasoglu; Lamarque; Bacmeister; Bailey; DuVivier; Edwards; Emmons; Fasullo; Garcia; Gettelman; Hannay; Holland; Large; Lauritzen; Lawrence; Lenaerts; Lindsay; Lipscomb; Mills; Neale; Oleson; Otto-Bliesner; Phillips; Sacks; Tilmes; van Kampenhout; Vertenstein; Bertini; Dennis; Deser; Fischer; Fox-Kemper; Kay; Kinnison; Kushner; Larson; Long; Mickelson; Moore; Nienhouse; Polvani; Rasch; Strand https://doi.org/10.5281/zenodo.3895306

CESM-release-cesm2.1.1 Danabasoglu; Lamarque; Bacmeister; Bailey; DuVivier; Edwards; Emmons; Fasullo; Garcia; Gettelman; Hannay; Holland; Large; Lauritzen; Lawrence; Lenaerts; Lindsay; Lipscomb; Mills; Neale; Oleson; Otto-Bliesner; Phillips; Sacks; Tilmes; van Kampenhout; Vertenstein; Bertini; Dennis; Deser; Fischer; Fox-Kemper; Kay; Kinnison; Kushner; Larson; Long; Mickelson; Moore; Nienhouse; Polvani; Rasch; Strand https://doi.org/10.5281/zenodo.3895315

CESM-release-cesm2.1.2 Danabasoglu; Lamarque; Bacmeister; Bailey; DuVivier; Edwards; Emmons; Fasullo; Garcia; Gettelman; Hannay; Holland; Large; Lauritzen; Lawrence; Lenaerts; Lindsay; Lipscomb; Mills; Neale; Oleson; Otto-Bliesner; Phillips; Sacks; Tilmes; van Kampenhout; Vertenstein; Bertini; Dennis; Deser; Fischer; Fox-Kemper; Kay; Kinnison; Kushner; Larson; Long; Mickelson; Moore; Nienhouse; Polvani; Rasch; Strand https://doi.org/10.5281/zenodo.3895328

cylc/cylc-flow: cylc-7.8.3 H. James Oliver, M. Shin, B. Fitzpatrick, A. Clark, O. Sanders, B. P. Kinoshita, S. L. Bartholomew, D. Valters, Challurip, T. Trzeciak, D. Matthews, S. Wales, D. Sutherland, Wxtim; Lhuggett, J. Williams, R. Hatcher, A. Osprey, A. Reinecke, M. Dix, K. Pulo, Andrew https://doi.org/10.5281/zenodo.3243691

Sheri Mickelson et al.

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Short summary
Every generation of MIP exercises introduces new layers of complexity and an exponential growth in the amount of data requested. CMIP6 required us to develop a new tool chain and forced us to change our methodologies. The new methods discussed in this paper provided us with an 18 times speedup over our existing methods. This allowed us to meet our deadlines and we were able to publish more than half a million data sets on the ESGF for the CMIP6 project.
Every generation of MIP exercises introduces new layers of complexity and an exponential growth...
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