Table 1: Simulations produced using HadGEM1 to investigate the climate effects of MCB.

Experiment name Carbon dioxide fraction (ppm) Seeding scheme CON 440 None 2CO2 440 + 1%/year, held at 560 None MCB3 440 + 1%/year, held at 560 Three regions MCBA 440 + 1%/year, held at 560 All ocean