Closed ncx-gitbot closed 1 year ago
NCX response: We appreciate comments noting that the structure and performance of the baseline model used within this methodology is strongly influential on the predicted and realized climate impact of projects. Our revised methodology increases transparency rather than following an expert review process. This includes both detailed documentation of particular models used, as well as sharing benchmarking and performance information for baseline models. Finally, the revised approach to uncertainty explicitly accounts for imprecision in the baseline model in calculating the final number of credits generated from projects developed under this methodology.
Commenter Organization: Forest Carbon Works
Commenter: Briana Capra
2021 Deferred Harvest Methodology Section: Model for carbon-at-risk of removal (section 11)
Comment: The methodology employs a model to determine baseline emissions to predict the carbonat-risk of removal. However, no conservative factors are required to discount for model uncertainty. Studies cited by the methodology show there could be massive uncertainty. The requirement is: Models shall apply conservative factors to discount for model uncertainty (in accordance with the requirements set out in Section 2.1.3), and shall use conservative assumptions and parameters that are likely to underestimate, rather than overestimate, the GHG emission reductions or removals.
Proposed Change: VCS Rerefence: VCS Methodology Requirements Section 2.5.1