Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 6, issue 4
Articles | Volume 6, issue 4
https://doi.org/10.5194/wcd-6-1539-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-6-1539-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 6, issue 4
Research article
 | 
26 Nov 2025
Research article |  | 26 Nov 2025

Process-based diagnostics using atmospheric budget analysis and nudging technique to identify sources of model systematic errors

Chihiro Matsukawa, José M. Rodríguez, and Sean F. Milton

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Short summary
To identify sources of the model systematic errors, we investigate northern hemisphere mid-latitude wind errors at short- to medium-range timescale using the atmospheric zonal-mean budgets analysis and the relaxation technique. These process-based diagnostics specify to what extent the individual components in the budgets contribute to the total tendency of the corresponding variable. This study shows disentanglements of compensating errors caused by mechanical and thermal forcings.
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