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| | EPA : Global Warming : Emissions : State : State GHG Inventories |
 | | Each inventory identifies the major sources of GHG emissions and creates a baseline upon which reduction strategies are based. |
 | | The inventories present annual emissions of GHGs by sector (e.g., energy, agriculture, waste), by source (e.g., transportation emissions, manure management), and by gas (e.g., carbon dioxide, methane). |
 | | The methods on which the inventories are based generally estimate GHG emissions as a function of (a) activity data (e.g., electricity usage, cement production, fertilizer consumption, etc.) and (b) activity- and gas-specific emission factors. |
| yosemite.epa.gov /oar/globalwarming.nsf/content/EmissionsStateGHGInventories.html (912 words) |
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