... that will in principle cover accounting rules, verification standards (including accreditation of verifiers), and the establishment of a registration and enforcement system.28 Initially, ... policies requiring reductions in GHG emissions, public interest in further voluntary emissions reductions will diminish. It is 14 Intergovernmental Panel on Climate Change, 2007. Climate Change ... verification standards; and (3) registration and enforcement systems. 1. GHG Emission Reduction Accounting Standards Accounting standards address the actual quantification of GHG reductions...