Table 1 List of experimental design aspects.

Control run

CTL

1–1250 (model year)

Fixed at 284.7ppmv everywhere

Spatially inhomogeneous CO₂ runs

SIC runs, members:

SIC228, SIC483, SIC630

Branch runs starting from 228^th, 483^td, and 630^th years, lasting for 150 years

Dynamic CO₂ concentration with spatial differences, derived from the NCAR dataset²⁸

Spatially homogeneous CO₂ runs

SHC runs, members:

SHC228, SHC483, SHC630

Branch runs starting from 228^th, 483^td, and 630^th years lasting for 150 years

Dynamic but spatially homogeneous CO₂ concentrations, keeping yearly global mean atmospheric CO₂ concentration exactly the same as the corresponding SIC runs