GMSL experiments
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The first is the pre-industrial control experiment (picontrol). It employs the Earth's orbital parameters of 1990 CE, and the atmospheric CO<sub>2</sub> level 284.70 ppm and CH<sub>4</sub> level 791.60 ppb. The second group (lig126 group) includes three simulations, lig126, lig126sl5m, lig126sl10m. The lig126 experiment, which only considers changes in the Earth's orbital configuration and greenhouse gas levels, uses the orbital parameters of 126 ka, the atmospheric CO<sub>2</sub> level 274.99 ppm, and the atmospheric CH<sub>4</sub> level 652.52 ppb. In addition to the orbital parameters and greenhouse gas level, lig126sl5m and lig126sl10m further consider the GMSL rise of 5 and 10 m, respectively. The third group (co<sub>2</sub>400 group) includes seven simulations, co<sub>2</sub>400, co<sub>2</sub>400sl0.625m, co<sub>2</sub>400sl1.25m, co<sub>2</sub>400sl2.5m, co<sub>2</sub>400sl5m, co<sub>2</sub>400sl10m and co<sub>2</sub>400sl20m. In co<sub>2</sub>400, the atmospheric CO<sub>2</sub> level is 400 ppm, all other boundary conditions (including orbital parameters, CH<sub>4</sub> level, bathymetry, and topography) are identical to the picontrol experiment. Compared to co<sub>2</sub>400, we consider GMSL rise of 0.625, 1.25, 2.5, 5, 10, and 20 m in other experiments in this group.
