Verra has published corrections and clarifications to two agriculture methodologies and one tool in the Verified Carbon Standard (VCS) Program: VM0032 Methodology for the Adoption of Sustainable Grasslands through Adjustment of Fire and Grazing, v1.0; VM0042 Improved Agricultural Land Management, v2.1; and VT0014 Estimating Organic Carbon Stocks Using Digital Soil Mapping, v1.0.
Projects using these methodologies and the tool facilitate the scaling up of soil carbon sequestration activities, an important nature-based solution to climate mitigation.
The corrections and clarifications include updates that enable the use of VT0014 with the active versions of VM0032 and VM0042, as well as guidance on the calculation of the mean change in soil organic carbon stocks.
Corrections and Clarifications
Below, please find a summary of the corrections and clarifications for each document:
- Corrections to VM0032 Methodology for the Adoption of Sustainable Grasslands through Adjustment of Fire and Grazing, v1.0 (PDF)
- Issued: October 16, 2025
- Correction to allow the use of remote sensing to estimate and monitor soil organic carbon (SOC) stock changes only in the measured approach, through digital soil mapping by applying VT0014
- Corrections and Clarifications to VM0042 Improved Agricultural Land Management, v2.1 (PDF)
- Issued: October 10, 2025
- Correction to allow the use of remote sensing to estimate and monitor SOC stock changes through digital soil mapping by applying VT0014
- Clarification on the requirement to use the templates available on the methodology website to prepare project documentation
- Corrections to VT0014 Estimating Organic Carbon Using Digital Soil Mapping, v1.0 (PDF)
- Issued: October 16, 2025
- Corrections to equations and parameters to estimate the mean change in SOC stock
- Correction to unit variance of the estimate of the mean change in SOC stock between times t and t + Δt (equation 5)
- Correction to units for the ratio of molecular weight of carbon dioxide to carbon (equation 7)