Preprints
https://doi.org/10.5194/gmd-2022-56
https://doi.org/10.5194/gmd-2022-56
Submitted as: model description paper
01 Mar 2022
Submitted as: model description paper | 01 Mar 2022
Status: this preprint is currently under review for the journal GMD.

The Earth system model CLIMBER-X v1.0. Part 1: climate model description and validation

Matteo Willeit1, Andrey Ganopolski1, Alexander Robinson2,3,1,4, and Neil R. Edwards5 Matteo Willeit et al.
  • 1Potsdam Institute for Climate Impact Research, Potsdam, Germany
  • 2Complutense University of Madrid, Madrid, Spain
  • 3Geosciences Institute CSIC-UCM, Madrid, Spain
  • 4Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO 80305, USA
  • 5Environment, Earth and Ecosystems, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK

Abstract. The newly developed fast Earth system model CLIMBER-X is presented. The climate component of CLIMBER-X consists of a 2.5D semi-empirical statistical-dynamical atmosphere model, a 3D frictional-geostrophic ocean model, a dynamic-thermodynamic sea ice model and a land surface model. All model components are discretized on a regular lat-lon grid with a horizontal resolution of 5° × 5°. The model has a throughput of ~10,000 simulation years per day on a single node with 16 CPUs on a high performance computer and is designed to simulate the evolution of the Earth system on temporal scales ranging from decades to > 100,000 years. A comprehensive evaluation of the model performance for present day and the historical period shows that CLIMBER-X is capable of realistically reproducing many observed climate characteristics, with results that generally lie within the range of state-of-the-art general circulation models. The analysis of model performance is complemented by a thorough assessment of climate feedbacks and model sensitivities to changes in external forcings and boundary conditions. CLIMBER-X also includes a detailed representation of the global carbon cycle and is coupled to an ice sheet model, which will be described in separate papers. CLIMBER-X is available as open--source code and is expected to be a useful tool for studying past climate changes and for the investigation of the long-term future evolution of the climate.

Matteo Willeit et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2022-56', Anonymous Referee #1, 24 Mar 2022
  • RC2: 'Comment on gmd-2022-56', Anonymous Referee #2, 27 Mar 2022
  • RC3: 'Review of gmd-2022-56', Anonymous Referee #3, 08 Apr 2022

Matteo Willeit et al.

Model code and software

CLIMBER-X v1.0 Matteo Willeit https://doi.org/10.5281/zenodo.6301052

Matteo Willeit et al.

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Short summary
In this paper we present the climate component of the newly developed fast Earth system model CLIMBER-X. It has a horizontal resolution of 5° × 5° and is designed to simulate the evolution of the Earth system on temporal scales ranging from decades to > 100,000 years. CLIMBER-X is available as open-source code and is expected to be a useful tool for studying past climate changes and for the investigation of the long-term future evolution of the climate.