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US Emissions Inventory 2003
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INVENTORY OF U.S. GREENHOUSE GAS EMISSIONS AND SINKS: 1990-2001
FINAL VERSION
(April 2003)
EPA 430-R-03-004
 All files listed in the Table of Contents are available for viewing or download in Adobe Acrobat 5.0 format. Acrobat Reader is available from Adobe Systems  at no cost.
In addition to the sections below, the complete report (7.71 MB PDF) is available in Acrobat (pdf) format.
A zip file of all individual tables from this document (main chapters and annexes) are now available in .txt format for spreadsheet analysis.
TABLE OF CONTENTS
Upfront (48 KB PDF) – includes title page, acknowledgments and preface.
Table of Contents (171 KB PDF) – full table of contents, and a list of tables and figures.
Executive Summary (1.09 MB PDF) – provides a broad overview of all U.S. greenhouse gas emission sources and sinks, introduces key concepts, and discusses the primary drivers for the growth in emissions. All material in the Executive Summary is drawn from the following chapters.
Changes in This Year's Inventory Report (209 KB PDF) – includes an overview of changes in this year's report – including historical data, methodology and other changes relative to the 1990-2000 report.
Introduction (514 KB PDF) – includes an overview of trends, an introduction to climate change, a discussion of methodological issues and uncertainties associated with estimates.
Energy (1.14 MB PDF) – discusses and quantifies energy related emissions of all greenhouse gases resulting from stationary and mobile source activities including fuel combustion and fugitive fuel emissions.
Industrial Processes (727 KB PDF) – addresses emissions from industrial processes not directly related to energy activities.
Solvent Use (72 KB PDF) – addresses emissions resulting from the use of solvents, primarily non-methane volatile organic compounds (NMVOCs).
Agriculture (593 KB PDF) – addresses anthropogenic emissions from agricultural activities (not including fuel combustion and sewage emissions, which are addressed, respectively, in the Energy and Waste chapters).
Land-Use Change & Forestry (2.49 MB PDF) – addresses emissions and removals from forest and land-use change activities, primarily carbon dioxide.
Waste (203 KB PDF) – addresses emissions from waste management activities.
References (544 KB PDF)
Annexes (All Annexes, A-AB, 6.44 MB PDF) – Supplementary information, data tables, detailed emission calculations and methodological discussions.
List of Annexes (154 KB PDF) – Supplementary information, data tables, detailed emission calculations and methodological discussions.
Annex A (466 KB PDF) – Methodology for Estimating Emissions of CO2 from Fossil Fuel Combustion.
Annex B (848 KB PDF) – Methodology for Estimating Carbon Content of Fossil Fuels.
Annex C (567 KB PDF) – Methodology for Estimating Carbon Stored in Products from Non-Energy Uses of Fossil Fuels.
Annex D (310 KB PDF) – Methodology for Estimating Emissions of CH4, N2O, and Ambient Pollutants from Stationary Combustion.
Annex E (946 KB PDF) – Methodology for Estimating Emissions of CH4, N2O, and Ambient Pollutants from Mobile Combustion and Methodology for and Supplemental Information on Transportation-Related GHG Emissions.
Annex F (346 KB PDF) – Methodology for Estimating CH4 Emissions from Coal Mining.
Annex G (230 KB PDF) – Methodology for Estimating CH4 Emissions from Natural Gas Systems.
Annex H (295 KB PDF) – Methodology for Estimating CH4 Emissions from Petroleum Systems.
Annex I (301 KB PDF) – Methodology for Estimating Emissions from Municipal Solid Waste Combustion.
Annex J (292 KB PDF) – Methodology for Estimating Emissions from International Bunker Fuels used by the U.S. Military.
Annex K (234 KB PDF) – Methodology for Estimating HFC, PFC, and SF6 Emissions from Substitution of Ozone Depleting Substances.
Annex L (490 KB PDF) – Methodology for Estimating Methane Emissions from Enteric Fermentation.
Annex M (705 KB PDF) – Methodology for Estimating CH4 and N2O Emissions from Manure Management.
Annex N (379 KB PDF) – Methodology for Estimating N2O Emissions from Agricultural Soil Management.
Annex O (291 KB PDF) – Methodology for Estimating CO2 Emissions and Sinks from Forest Carbon Stocks.
Annex P (708 KB PDF) – Methodology for Estimating Net Changes in Carbon Stocks in Minerals and Organic Soils.
Annex Q (598 KB PDF) – Methodology for Estimating CH4 Emissions from Landfills.
Annex R (987 KB PDF) – Key Source Analysis
Annex S (363 KB PDF) – Global Warming Potential Values.
Annex T (271 KB PDF) – Ozone Depleting Substance Emissions.
Annex U (187 KB PDF) – Sulfur Dioxide Emissions.
Annex V (123 KB PDF) – Complete List of Source Categories.
Annex W (407 KB PDF) – IPCC Reference Approach for Estimating CO2 Emissions from Fossil Fuel Combustion.
Annex X (310 KB PDF) – Sources of Greenhouse Gas Emissions Excluded.
Annex Y (249 KB PDF) – Constants, Units, and Conversions.
Annex Z (122 KB PDF) – Abbreviations.
Annex AA (180 KB PDF) – Chemical Symbols.
Annex AB (499 KB PDF) – Glossary.
See the National Emissions section of the Global Warming Site for additional information on U.S. greenhouse gas emissions.
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