摘要: |
This report was developed by the U.S. Environmental Protection Agency's (EPA) Office of Transportation and Air Quality (OTAQ) to help transportation agencies, the transportation industry, researchers, and the public better understand the connection between transportation and GHG emissions in the United States. The GHG emissions estimates presented in this report are taken from the official GHG Inventory produced by EPA, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 19902003 (U.S. GHG Inventory). As a complement to the U.S. GHG Inventory, this report includes additional detail on GHG emissions from transportation and non-transportation mobile sources. It also analyzes factors affecting emissions, uncertainty in the data, and emerging issues. |