Even the best models have biases. It is, therefore, more robust to understand the impact of a change (e.g., increased emissions) in a relative sense. This can be done by comparing future change simulations with historical simulations from the same model.
This DO will provide details and examples of appropriate and inappropriate comparisons of future change.
Thanks for expressing interest in this guideline. By clicking here, you are letting us know you would like us to develop this guidance. If you have specific questions or examples you would like included, please share them with us (click button below). By sending us a note, we will also update you when more information is available.