A new ensemble-based consistency test for the Community Earth System Model (pyCECT v1.0)

AMS Citation:
Baker, A., and Coauthors, 2015: A new ensemble-based consistency test for the Community Earth System Model (pyCECT v1.0). Geoscientific Model Development, 8, 2829-2840, doi:10.5194/gmd-8-2829-2015.
Date:2015-09-09
Resource Type:article
Title:A new ensemble-based consistency test for the Community Earth System Model (pyCECT v1.0)
Abstract: Climate simulation codes, such as the Community Earth System Model (CESM), are especially complex and continually evolving. Their ongoing state of development requires frequent software verification in the form of quality assurance to both preserve the quality of the code and instill model confidence. To formalize and simplify this previously subjective and computationally expensive aspect of the verification process, we have developed a new tool for evaluating climate consistency. Because an ensemble of simulations allows us to gauge the natural variability of the model's climate, our new tool uses an ensemble approach for consistency testing. In particular, an ensemble of CESM climate runs is created, from which we obtain a statistical distribution that can be used to determine whether a new climate run is statistically distinguishable from the original ensemble. The CESM ensemble consistency test, referred to as CESM-ECT, is objective in nature and accessible to CESM developers and users. The tool has proven its utility in detecting errors in software and hardware environments and providing rapid feedback to model developers.
Peer Review:Refereed
Copyright Information:Copyright Author(s) 2015. This work is distributed under the Creative Commons Attribution 3.0 License.
OpenSky citable URL: ark:/85065/d77h1ktn
Publisher's Version: 10.5194/gmd-8-2829-2015
Author(s):
  • Allison Baker - NCAR/UCAR
  • Dorit Hammerling - NCAR/UCAR
  • Michael Levy - NCAR/UCAR
  • Haiying Xu - NCAR/UCAR
  • John Dennis - NCAR/UCAR
  • Brian Eaton - NCAR/UCAR
  • James Edwards - NCAR/UCAR
  • Cecile Hannay - NCAR/UCAR
  • Sheri Mickelson - NCAR/UCAR
  • Richard Neale - NCAR/UCAR
  • Doug Nychka - NCAR/UCAR
  • Jay Shollenberger - NCAR/UCAR
  • Joseph Tribbia - NCAR/UCAR
  • Mariana Vertenstein - NCAR/UCAR
  • David Williamson - NCAR/UCAR
  • Random Profile

    SR SCIENT SECT HEAD

    Recent & Upcoming Visitors