Preprints
https://doi.org/10.5194/egusphere-2022-32
https://doi.org/10.5194/egusphere-2022-32
09 Mar 2022
 | 09 Mar 2022

AWI-CM3 coupled climate model: Description and evaluation experiments for a prototype post-CMIP6 model

Jan Streffing, Dmitry Sidorenko, Tido Semmler, Lorenzo Zampieri, Patrick Scholz, Miguel Andrés-Martínez, Nikolay Koldunov, Thomas Rackow, Joakim Kjellsson, Helge Goessling, Marylou Athanase, Qiang Wang, Jan Hegewald, Dmitry Sein, Longjiang Mu, Uwe Fladrich, Dirk Barbi, Paul Gierz, Sergey Danilov, Stephan Juricke, Gerrit Lohmann, and Thomas Jung

Abstract. We developed a new version of the Alfred Wegener Institute Climate Model (AWI-CM3), which has higher skills in representing the observed climatology and better computational efficiency than its predecessors. Its ocean component FESOM2 has the multi-resolution functionality typical for unstructured-mesh models while still featuring a scalability and efficiency similar to regular-grid models. The atmospheric component OpenIFS (CY43R3) enables the use of latest developments in the numerical weather prediction community in climate sciences. In this paper we describe the coupling of the model components and evaluate the model performance on a variable resolution (25–125 km) ocean mesh and a 61 km atmosphere grid, which serves as a reference and starting point for other on-going research activities with AWI-CM3. This includes the exploration of high and variable resolution, the development of a full Earth System Model as well as the creation of a new sea ice prediction system. At this early development stage and with the given coarse to medium resolutions, the model already features above CMIP6-average skills in representing the climatology and competitive model throughput. Finally we identify remaining biases and suggest further improvements to be made to the model.

Publisher's note: Jan Hegewald was added as co-author to this paper on 10 October 2022. They originally contributed to the preprint but were missing in the author list.

Journal article(s) based on this preprint

29 Aug 2022
AWI-CM3 coupled climate model: description and evaluation experiments for a prototype post-CMIP6 model
Jan Streffing, Dmitry Sidorenko, Tido Semmler, Lorenzo Zampieri, Patrick Scholz, Miguel Andrés-Martínez, Nikolay Koldunov, Thomas Rackow, Joakim Kjellsson, Helge Goessling, Marylou Athanase, Qiang Wang, Jan Hegewald, Dmitry V. Sein, Longjiang Mu, Uwe Fladrich, Dirk Barbi, Paul Gierz, Sergey Danilov, Stephan Juricke, Gerrit Lohmann, and Thomas Jung
Geosci. Model Dev., 15, 6399–6427, https://doi.org/10.5194/gmd-15-6399-2022,https://doi.org/10.5194/gmd-15-6399-2022, 2022
Short summary

Jan Streffing et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-32', Anonymous Referee #1, 05 Apr 2022
  • RC2: 'Comment on egusphere-2022-32', Anonymous Referee #2, 19 Apr 2022

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-32', Anonymous Referee #1, 05 Apr 2022
  • RC2: 'Comment on egusphere-2022-32', Anonymous Referee #2, 19 Apr 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Jan Streffing on behalf of the Authors (16 Jun 2022)  Author's response   Manuscript 
EF by Polina Shvedko (22 Jun 2022)  Author's tracked changes 
ED: Referee Nomination & Report Request started (22 Jun 2022) by Riccardo Farneti
RR by Anonymous Referee #1 (23 Jun 2022)
RR by Anonymous Referee #2 (07 Jul 2022)
ED: Publish as is (15 Jul 2022) by Riccardo Farneti
AR by Jan Streffing on behalf of the Authors (18 Jul 2022)

Journal article(s) based on this preprint

29 Aug 2022
AWI-CM3 coupled climate model: description and evaluation experiments for a prototype post-CMIP6 model
Jan Streffing, Dmitry Sidorenko, Tido Semmler, Lorenzo Zampieri, Patrick Scholz, Miguel Andrés-Martínez, Nikolay Koldunov, Thomas Rackow, Joakim Kjellsson, Helge Goessling, Marylou Athanase, Qiang Wang, Jan Hegewald, Dmitry V. Sein, Longjiang Mu, Uwe Fladrich, Dirk Barbi, Paul Gierz, Sergey Danilov, Stephan Juricke, Gerrit Lohmann, and Thomas Jung
Geosci. Model Dev., 15, 6399–6427, https://doi.org/10.5194/gmd-15-6399-2022,https://doi.org/10.5194/gmd-15-6399-2022, 2022
Short summary

Jan Streffing et al.

Jan Streffing et al.

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Latest update: 02 Jan 2024
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Short summary
We developed a new Atmosphere-Ocean coupled climate model, AWI-CM3. Our model is significantly more computationally efficient than it's predecessors AWI-CM1 and AWI-CM2. We show that the model, although cheaper to run provides similar quality results when modelling the historic period from 1850 to 2014. We identify the remaining weaknesses to outline future work. Finally we preview an improved simulation where the reduction in computational cost has be invested in higher model resolution.