Articles | Volume 3, issue 2
Weather Clim. Dynam., 3, 535–553, 2022
https://doi.org/10.5194/wcd-3-535-2022
Weather Clim. Dynam., 3, 535–553, 2022
https://doi.org/10.5194/wcd-3-535-2022
Research article
10 May 2022
Research article | 10 May 2022

Orographic resolution driving the improvements associated with horizontal resolution increase in the Northern Hemisphere winter mid-latitudes

Paolo Davini et al.

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Short summary
In climate models, improvements obtained in the winter mid-latitude circulation following horizontal resolution increase are mainly caused by the more detailed representation of the mean orography. A high-resolution climate model with low-resolution orography might underperform compared to a low-resolution model with low-resolution orography. The absence of proper model tuning at high resolution is considered the potential reason behind such lack of improvements.