This joint Ipieca-API document is designed to provide a summary of technical considerations that are important for understanding and calculating greenhouse gas (GHG) emission inventory uncertainty. It includes technical background and specific calculation methods to determine uncertainties with targeted measurements and emission factors, and to determine how to aggregate these individual terms to derive uncertainty ranges (as a pre-designated probability level) for entire GHG inventories at any given level. This document builds on a 2007 Ipieca/API workshop where the need to develop an understanding of the importance of the key factors that contribute to uncertainty was established, a pilot version was subsequently published in 2009 to allow for a broad review and implementation of guidance from various stakeholders. The comments received, lessons learned and new developments that have occurred in the area since then are incorporated in this document. Additional Information This document is a companion to the API Compendium of Greenhouse Gas Emissions Methodologies for the Oil and Natural Gas Industry (API, 2009).
Appendices to the joint Ipieca-API document on technical considerations that are important for understanding and calculating GHG emission inventory uncertainty.
The Ipieca-OGCI Natural climate solutions: high carbon stock ecosystems management guidance supports the Paris Agreement goals by setting out the key principles to help energy companies conserve, enhance and restore the high carbon stock ecosystems where they operate.
A summary of the Ipieca-OGCI guidance on natural climate solutions management.
The Ipieca-IOGP-GGFR Flaring management guidance outlines new developments in flaring management and reduction, and examines industry experiences with eliminating flaring, new technologies, business models, operational improvements and regulatory policy.