This document delves into the intricacies of identifying key categories within national greenhouse gas inventories, as outlined in the 2006 IPCC Guidelines. The primary objective is to guide inventory compilers in making methodological choices that enhance the accuracy and reliability of their greenhouse gas estimates. By focusing on key categories, which significantly influence a country's total greenhouse gas inventory, the document aims to help compilers prioritize their efforts and resources effectively. Readers will find answers to critical questions such as: What constitutes a key category? How can these categories be systematically identified? What are the general rules and methodological approaches for this identification? The document also addresses the importance of reporting and documentation, ensuring transparency and consistency in inventory compilation. Upon reading this document, readers will gain a comprehensive understanding of the processes and criteria for identifying key categories in greenhouse gas inventories. They will learn about the general rules for identification, the methodological approaches (including both quantitative and qualitative criteria), and the importance of thorough reporting and documentation. This knowledge will enable them to make informed decisions about the methodological choices in their national inventories, ultimately leading to improved inventory quality and greater confidence in the estimates. This introduction provides a clear overview of the document's purpose and content, helping readers decide whether it meets their needs and interests in the field of greenhouse gas inventory compilation and environmental sustainability.
greenhouse gas inventory key category analysis emissions removals uncertainty good practice methodological choice qualitative criteria quantitative analysis carbon stock change direct emissions indirect emissions fossil fuels climate change mitigation reporting and documentation quality assurance quality control decision tree tiered approach national circumstances aggregation level disaggregation inventory compiler sectoral volumes ipcc categories greenhouse gas emissions national inventory system data collection uncertainty analysis monte carlo analysis trend assessment level assessment emissions factors carbon dioxide methane nitrous oxide fluorinated gases land use land-use change forestry solid waste disposal biological treatment wastewater treatment fossil fuel combustion industrial processes product use agriculture forestry other land use
India , European Union , Ireland , United States of America , United Kingdom , New Zealand , Canada , Singapore , Australia