2 - United States - Methane emissions (kt of CO2 equivalent) was 635,108.20 in 1990 3 - Russia - Methane emissions (kt of CO2 equivalent) was 624,476.80 in 1990 4 - India - Methane emissions (kt of CO2 equivalent) was 621,479.70 in 2010 5 - Brazil - Methane emissions (kt of CO2 equivalent) was 492,222.60 in 2005 The column on the right shows how much that chemical would warm the earth over a 100-year period as compared to carbon dioxide. A 9 watt light-emitting diode (LED) bulb produces the same light output as a 43 watt incandescent light bulb. The rate of accumulation is equal to growth minus removals (i.e., harvest for the production of paper and wood) minus decomposition. For example, sulphur hexafluoride is used to fill tennis balls. Therefore, the weighted average carbon sequestered by a medium growth coniferous or deciduous tree, planted in an urban setting and allowed to grow for 10 years, is 36.4 lbs of carbon per tree. Growing forests accumulate and store carbon. Of a sample of approximately 11,000 coniferous and deciduous trees in seventeen major U.S. cities, approximately 11 percent and 89 percent of sampled trees were coniferous and deciduous, respectively (McPherson et al. Please note the following caveats to these assumptions: To convert to units of metric tons CO2 per tree, multiply by the ratio of the molecular weight of carbon dioxide to that of carbon (44/12) and the ratio of metric tons per pound (1/2,204.6). The average wind capacity factor in the U.S. in 2017 was 34 percent (DOE 2018). The amount of waste in an average garbage truck was assumed to be 7 tons (EPA 2002). On average, each home consumed 12,146 kWh of delivered electricity. Natural gas: 40,190 cubic feet per home × 0.0549 kg CO2/cubic foot × 1/1,000 kg/metric ton = 2.21 metric tons CO2/home, 3. These values are summed for the 10-year period, beginning from the time of planting, to derive the estimate of 23.2 lbs of carbon per coniferous tree or 38.0 lbs of carbon per deciduous tree. To obtain the amount of energy consumed to charge the smartphone, subtract the amount of energy consumed in “maintenance mode” (0.14 Watts times 22 hours) from the 24-hour energy consumed (14.17 Watt-hours). About the OGMP. Annual energy consumed by a light bulb is calculated by multiplying the power (43 watts) by the average daily use (3 hours/day) by the number of days per year (365). A medium growth coniferous or deciduous tree, planted in an urban setting and allowed to grow for 10 years, sequesters 23.2 and 38.0 lbs of carbon, respectively. hectares × 103) = -0.52 metric tons of carbon sequestered per hectare per year*. Highway Statistics 2017. Monthly Energy Review March 2019, Table A4: Approximate Heat Content of Natural Gas for End-Use Sector Consumption. Carbon dioxide emissions were then divided by the ratio of carbon dioxide emissions to total vehicle greenhouse gas emissions to account for vehicle methane and nitrous oxide emissions. For example, the GWP for methane is 25 and for nitrous oxide 298. 20.92 mmbtu/metric ton coal × 26.08 kg C/mmbtu × 44 kg CO2/12 kg C × 1 metric ton coal/2,204.6 pound of coal x 1 metric ton/1,000 kg = 9.08 x 10-4 metric tons CO2/pound of coal. The data are from the Annual Energy Outlook 2019, Table A8: Electricity Supply, Disposition, Prices, and Emissions available at: https://www.eia.gov/outlooks/aeo/. Le dioxyde de carbone (CO2) et le méthane (CH4) sont tout les deux des gaz à effet de serre. Immediately after conversion from forestland to cropland, biomass is assumed to be zero, as the land is cleared of all vegetation before planting crops), ∆CL = annual decrease in biomass stocks due to losses from harvesting, fuel wood gathering, and disturbances on land converted to other land-use category (assumed to be zero). The amount of coal in an average railcar was assumed to be 100.19 short tons, or 90.89 metric tons (Hancock 2001). By Gayathri Vaidyanathan, ClimateWire on December 22, 2015 At present, nations report methane emissions in terms of CO2 equivalents, using GWP100 as the conversion factor… According to WARM, the net emission reduction from recycling mixed recyclables (e.g., paper, metals, plastics), compared with a baseline in which the materials are landfilled (i.e., accounting for the avoided emissions from landfilling), is  2.94 metric tons of carbon dioxide equivalent per short ton. U.S. Environmental Protection Agency, Washington, DC. Intergovernmental Panel on Climate Change, Geneva, Switzerland, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2017. Annual Net Change in Carbon Stocks per Area in Year t = (Carbon Stocks(t+1) - Carbon Stockst)/Area of land remaining in the same land-use category, Step 1: Determine the carbon stock change between years by subtracting carbon stocks in year t from carbon stocks in year (t+1). A note on global warming potentials (GWPs): Some of the equivalencies in the calculator are reported as CO2 equivalents (CO2E).