Flying an A321neo JFK to LHR emits over 60 tons of CO2, which is 50% more than was emitted when training GLaM.

Those CO2 numbers probably aren’t trustworthy.

If the training run hadn’t happened, would the renewable/nuclear plants with lower marginal costs have curtailed production before the carbon intensive plants that have higher marginal costs? That doesn’t make any economic sense. Instead, carbon intensive power made up for the shortfall in production created by the run.

If the companies that ran the training can also show me a 6000 ton brick of carbon they pulled out of the atmosphere, or equivalent early-decommissioned natural gas / coal boilers, then I’ll stand corrected.