To reproduce observed weather patterns, CAM6 horizontal winds are nudged to ERA5 through three-hourly Newtonian relaxation.

Evidence (1)

European summer drying largely driven by atmospheric circulation changes since the 1980s — Detailed simulation, counterfactual-forcing, and weather-regime procedures

horizontal winds of CAM6 are nudged to ERA5

https://doi.org/10.1038/s41561-026-02050-w#unit-7-p2

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