Metric Tonne of Carbon Dioxide Equivalents (MTCO2e)
One metric ton of carbon dioxide equivalents (a unit used to measure greenhouse gases).
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Climate Action
Lean Burn
A “lean burn” engine uses a relatively lean amount of fuel in the engine’s combustion chamber. On a comparative basis, lean burn engines use less fuel than “rich burn” engines, thereby producing fewer emissions per unit of output. (The Code of Federal Regulations, Title 40, Part 63.6675, defines “lean burn” engines as any engine that
Greenhouse Gases (GHGs)
Emissions that trap heat in the atmosphere, causing global warming. The main greenhouse gases are carbon dioxide (CO2), Methane (CH4), Nitrous Oxide (N2O), and fluorinated gases (synthetic greenhouse gases emitted from industrial processes, including hydrofluorocarbons, perfluorocarbons, and surfur hexafluoride).[1] The Climate Registry draft update to its GHG reporting protocol now also includes NF3 (nitrogen trifluoride)
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California Carbon Allowance (CCA)
One CCA is a permit to emit one metric ton of carbon dioxide equivalents (MTCO2e), a measurement of greenhouse gases.
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