public review draft a 19 annex 2 methodology and data for 1 estimating co emissions from fossil fuel combustion 3 of 4 carbon dioxide were estimated using bottom up 5 characterized by nine steps these are described below 6 step determine total consumption type sector 7 the used united states 8 is conceptually similar to approach recommended intergovernmental panel on climate 9 change ipcc countries that intend develop detailed sectoral based emission estimates 10 unep oecd iea 1997 adjusted presented in columns through table 11 25 with totals column end use last rows 12 obtained directly energy information administration 13 eia us department first gathered physical units then converted
