USDA’s Climate Change Program Office has released and requested public comment on a report that outlines a set of consensus methods for quantifying greenhouse gas (GHG) emissions and carbon storage at the local farm, ranch or forest scale. “It is important that the methods exhibit scientific rigor, transparency, completeness, accuracy, and cost effectiveness, as well as consistency and comparability with other USDA GHG inventory efforts,” USDA said in a statement. “Science-Based Methods for Entity-Scale Quantification of Greenhouse Gas Sources and Sinks from Agriculture and Forestry Practices” is the work of 38 scientists from across academia, USDA and the federal government who are experts in GHG estimation in the cropland, grazing land, livestock and forest management sectors. The report has undergone technical review by an additional 29 scientists. A notice seeking comment is to be published today in the Federal Register and will provide instructions for submitting comments. The comment period will be open for 45 days.