HIST includes historical anthropogenic and natural forcing, while NAT and PD fix anthropogenic forcings at pre-industrial and 2020s levels, respectively.

Evidence (1)

European summer drying largely driven by atmospheric circulation changes since the 1980s — Circulation-storyline design and validation of nudged simulations

The HIST simulation includes all historical anthropogenic and natural forcings.

https://doi.org/10.1038/s41561-026-02050-w#unit-2-p2

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