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Atmospheric Lifetime <br />Global Warming Potential1 <br />(100 Year Horizon) <br />__ 2 1 <br />12 28-36 <br />114 298 <br />1-270 12-14,800 <br />2,600-50,000 7,390-12,200 <br />740 17,200 <br />3,200 22,800 <br />Notes: <br />Source: http://www3.epa.gov/climatechange/ghgemissions/gases.html <br />(1) Compared to the same quantity of CO2 emissions. <br />(2) <br />Table 18 <br />Global Warming Potentials and Atmospheric Lifetimes <br />Carbon dioxide's lifetime is poorly defined because the gas is not destroyed over time, but instead moves among different parts of the <br />ocean–atmosphere–land system. Some of the excess carbon dioxide will be absorbed quickly (for example, by the ocean surface), but some will <br />remain in the atmosphere for thousands of years, due in part to the very slow process by which carbon is transferred to ocean sediments. <br />Gas <br />Carbon Dioxide (CO2) <br />Methane (CH4) <br />Nitrous Oxide (NO) <br />Hydrofluorocarbons (HFCs) <br />Perfluorocarbons (PFCs) <br />Nitrogen trifluoride (NF3) <br />Sulfur Hexafluoride (SF6) <br />Cabrillo at First Mixed-Use Residential Project <br />Air Quality, Global Climate Change, HRA and Energy Impact Analysis <br />19386606/27/2022 <br />Planning Commission 2 –113