----- Box ES-1: Recalculations of Inventory Estimates Each year, emission and sink estimates are recalculated and revised for all years in the Inventory of U.S. Greenhouse Gas Emissions and Sinks as attempts are made to improve both the analyses themselves, through the use of better methods or data, and the overall usefulness of the report. The United States Environmental Protection Agency (EPA) prepares the official U.S. Inventory of Greenhouse Gas Emissions and Sinks to comply with existing commitments under the United Nations Framework Convention on Climate Change (UNFCCC). Under decision 3/CP.5 of the UNFCCC Conference of the Parties, national Inventory

suggestion:

inventory of us greenhouse gas emissions and sinks