Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 8
Articles | Volume 19, issue 8
https://doi.org/10.5194/gmd-19-3395-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-3395-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 8
Model evaluation paper
 | 
27 Apr 2026
Model evaluation paper |  | 27 Apr 2026

Assessing resolution sensitivity in coupled climate simulations with AWI-CM3

Martina Zapponini, Tido Semmler, Jan Streffing, Thomas Rackow, Lettie A. Roach, and Thomas Jung

Data sets

AWI-CM3.1 historical and ssp585 scenario in TCo319-DART setup Martina Zapponini https://doi.org/10.5281/zenodo.17397357

AWI-CM3.1 historical and ssp585 scenario in TCo95-CORE2 setup Martina Zapponini https://doi.org/10.5281/zenodo.17377570

Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data (NSIDC-0051, Version 2) N. DiGirolamo et al. https://doi.org/10.5067/MPYG15WAA4WX

Global Ocean Physics Reanalysis Mercator Ocean International https://doi.org/10.48670/moi-00021

Model code and software

mzapponi/fesom2: FESOM2 version used for production runs in Zapponini et al. (2025) P. Scholz et al. https://doi.org/10.5281/zenodo.17961041

mzapponi/AWICM3_ResolutionSensitivity_paper: Notebooks_AWI-CM3_resolutions Martina Zapponini https://doi.org/10.5281/zenodo.17996211

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Short summary
This study evaluates the impact of grid resolution on long-term present and future climate runs using the Alfred Wegener Institute global model AWI-CM3. A higher-resolution setup (35 km atmosphere, eddy-permitting/resolving ocean) improves small-scale processes and long-term variability, across variables and regions, and can capture nonlinear ocean–atmosphere interactions often missed by Coupled Model Intercomparison Project (CMIP) models.
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