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The EPA is seeking public comment on the annual Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2009 draft report. This report will be open for public comment for 30 days after the Federal Register notice is published.
The draft report shows that in 2009, overall greenhouse gas (GHGs) emissions decreased by six percent since 2008. This downward trend was attributed to a decrease in fuel and electricity consumption across all U.S. economic sectors. Total emissions from GHGs were about 6,640 million metric tons of CO2 equivalent. Overall, emissions have grown by 7.4 percent from 1990 to 2009. Emissions in 2009 represent the lowest total U.S. annual GHG emissions since 1995.
The inventory tracks annual greenhouse gas emissions from 1990 to 2009 at the national level. The gases covered by this inventory include CO2, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride. The inventory also calculates CO2 emissions that are removed from the atmosphere by “sinks,” e.g., through the uptake of carbon by forests, vegetation or soils.
This annual report is prepared by the EPA in collaboration with experts from other federal agencies. After responding to public comments, the U.S. government will submit the final inventory report to the Secretariat of the United Nations Framework Convention on Climate Change (UNFCCC). The report will fulfill the annual requirement of the UNFCCC international treaty, ratified by the United States in 1992, which sets an overall framework for intergovernmental efforts to tackle the challenge posed by climate change.
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