Canada's Greenhouse Gas Inventory

As a signatory to the United Nations Framework Convention on Climate Change (UNFCCC), Canada is obligated to prepare and submit an annual national greenhouse gas (GHG) inventory covering anthropogenic emissions by sources and removals by sinks. Environment Canada is responsible for preparing Canada’s official national inventory with input from numerous experts and scientists across Canada. The National Inventory Report (NIR) contains Canada’s annual greenhouse gas emission estimates dating back to 1990.

The NIR, along with the Common Reporting Format (CRF) tables, comprise Canada’s inventory submission to the United Nations Framework Convention on Climate Change and are prepared in accordance with the UNFCCC Reporting Guidelines on annual inventories, Decision 14/CP 11, and other relevant decisions.

In This Section

Feature: National Inventory Report 1990-2011: Greenhouse Gas Sources and Sinks in Canada - Executive Summary

• About Canada's Greenhouse Gas Inventory - Learn how Canada's greenhouse gas emissions estimates are compiled.
• Frequently Used Information - Access global warming potentials and commonly used conversion factors.
• Definitions and Glossary - Commonly used terms and definitions found in Canada's National Inventory Report
• Previous National Inventory Reports - Access reports for previous years from Environment Canada's Publications website.

Related Resources

The national inventory must be prepared in accordance with international reporting guidelines and methodologies agreed to by the UNFCCC, including methodological procedures and guidelines prescribed by the Intergovernmental Panel on Climate Change (IPCC).

• Revised 1996 Intergovernmental Panel on Climate Change Guideline for National Greenhouse Gas Inventories
• Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories
• Good Practice Guidance for Land Use, Land-Use Change and Forestry
• 2006 Intergovernmental Panel on Climate Change Guidelines for National Greenhouse Gas Inventories – Not yet adopted for use by the UNFCCC