Carbon dioxide emissions per smartphone charged were determined by multiplying the energy use per smartphone charged by the national weighted average carbon dioxide marginal emission rate for delivered electricity. The volume of a standard-sized trash bag was assumed to be 25 gallons, based on a typical range of 20 to 30 gallons (EPA 2016b). Emissions from drained organic soils in forestland and drained organic soils in cropland vary based on the drainage depth and climate (IPCC 2006).

On average, each home consumed 12,146 kWh of delivered electricity (EIA 2019a).

From 2007 to 2017, the average annual sequestration of carbon per area was 0.53 metric tons C/hectare/year (or 0.21 metric tons C/acre/year) in the United States, with a minimum value of 0.49 metric tons C/hectare/year (or 0.20 metric tons C/acre/year) in 2014, and a maximum value of 0.55 metric tons C/hectare/year (or 0.22 metric tons C/acre/year) in 2011. Net changes in carbon attributed to harvested wood products are not included in the calculation. We don't collect information from our users.

Metric conversion calculator. These values include carbon in the five forest pools: aboveground biomass, belowground biomass, dead wood, litter, and soil organic and mineral carbon, and are based on state-level Forest Inventory and Analysis (FIA) data. 8.89 × 10-3 metric tons CO2/gallon gasoline × 11,484 VMT car/truck average × 1/22.3 miles per gallon car/truck average × 1 CO2, CH4, and N2O/0.989 CO2 = 4.63 metric tons CO2E/vehicle /year. The fraction oxidized is assumed to be 100 percent (IPCC 2006). These applications will - due to browser restrictions - send data between your browser and our server. Therefore: ∆CB = ∆CG + CConversion - ∆CL = -85.27 metric tons C/hectare/year of biomass carbon stocks are lost when forestland is converted to cropland in the year of conversion. ), Annual Net Change in Carbon Stocks in Year 2017 = 57,687 MMT C – 57,546 MMT C = 141 MMT C. Step 2: Determine the annual net change in carbon stocks (i.e., sequestration) per area by dividing the carbon stock change in U.S. forests from Step 1 by the total area of U.S. forests remaining in forests in year t (i.e., the area of land that did not change land-use categories between the time periods). -40.32 metric tons C/acre/year* x (44 units CO2/12 units C) = -147.83 metric tons CO2/acre/year (in the year of conversion). 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).

Carbon dioxide emissions per ton of coal were determined by multiplying heat content times the carbon coefficient times the fraction oxidized times the ratio of the molecular weight of carbon dioxide to that of carbon (44/12). Contact Us to ask a question, provide feedback, or report a problem. 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.

Measurement unit converter.

Natural Gas Conversions – Frequently Asked Questions, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2017.

2016). The Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2017 uses default IPCC (2014) factors for drained organic soil on forestland and U.S.-specific factors for cropland.

The Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2017 (EPA 2019) provides data on the net change in forest carbon stocks and forest area. The calculation takes into account “survival factors” developed by U.S. DOE (1998).

Carbon dioxide emissions per barrel of crude oil are determined by multiplying heat content times the carbon coefficient times the fraction oxidized times the ratio of the molecular weight of carbon dioxide to that of carbon (44/12). This page describes the calculations used to convert greenhouse gas emission numbers into different types of equivalent units. Carbon dioxide emissions per power plant were calculated by dividing the total emissions from power plants whose primary source of fuel was coal by the number of power plants. Therefore, AVERT provides a national marginal emission factor for the Equivalencies Calculator.

The average wind capacity factor in the U.S. in 2017 was 34 percent (DOE 2018).

Electricity: 12,146 kWh per home × 998 lbs CO2 per megawatt-hour generated × (1/(1-0.069)) MWh generated/MWh delivered × 1 MWh/1,000 kWh × 1 metric ton/2,204.6 lb = 5.906 metric tons CO2/home. *Negative values indicate CO2 that is NOT emitted. 1. In the preamble to the joint EPA/Department of Transportation rulemaking on May 7, 2010 that established the initial National Program fuel economy standards for model years 2012-2016, the agencies stated that they had agreed to use a common conversion factor of 10,180 grams of CO2 emissions per gallon of diesel consumed (Federal Register 2010).
While most trees take 1 year in a nursery to reach the seedling stage, trees grown under different conditions and trees of certain species may take longer: up to 6 years.

To determine annual greenhouse gas emissions per mile, the following methodology was used: carbon dioxide emissions per gallon of gasoline were divided by the average fuel economy of vehicles to determine carbon dioxide emitted per mile traveled by a typical passenger vehicle. Annual Change in Organic Carbon Stocks in Mineral  and Organic Soils, ∆CSoil = annual change in carbon stocks in mineral and organic soils, SOC0 = soil organic carbon stock in last year of inventory time period (i.e., 40.83 mt/hectare, the average reference soil carbon stock), SOC(0-T) = soil organic carbon stock at beginning of inventory time period (i.e., 123 mt C/hectare, which includes 102 mt C/hectare in mineral soils plus 21 mt C/hectare in organic soils), D = Time dependence of stock change factors which is the default time period for transition between equilibrium SOC values (i.e., 20 years for cropland systems).

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). In 2017, the weighted average combined fuel economy of cars and light trucks was 22.3 miles per gallon (FHWA 2019). In 2018, there were 120.3 million homes in the United States (EIA 2019a). This estimate is composed of the five carbon pools: aboveground biomass (54 metric tons C/hectare), belowground biomass (11 metric tons C/hectare), dead wood (10 metric tons C/hectare), litter (13 metric tons C/hectare), and soil carbon, which includes mineral soils (102 metric tons C/hectare) and organic soils (21 metric tons C/hectare).

The averaged reference soil carbon stock (for high-activity clay, low-activity clay, sandy soils, and histosols for all climate regions in the United States) is 40.83 metric tons C/hectare (EPA 2019). The emission factors for drained organic soil on temperate forestland are 2.60 metric tons C/hectare/year and 0.31 metric tons C/hectare/year (EPA 2019, IPCC 2014), and the average emission factor for drained organic soil on cropland for all climate regions is 13.17 metric tons C/hectare/year (EPA 2019). Carbon dioxide emissions per therm are determined by converting million British thermal units (mmbtu) to therms, then multiplying the carbon coefficient times the fraction oxidized times the ratio of the molecular weight of carbon dioxide to carbon (44/12).

These estimates are based on the following assumptions: The estimates of carbon sequestered by coniferous and deciduous trees were then weighted by the percent share of coniferous versus deciduous trees in cities across the United States. The sum of the carbon stocks in aboveground, belowground, dead wood, and litter biomass (-87.52 metric tons C/hectare). Carbon stock change in soils is time-dependent, with a default time period for transition between equilibrium soil carbon values of 20 years for soils in cropland systems (IPCC 2006).

Intergovernmental Panel on Climate Change, Geneva, Switzerland. The average carbon coefficient of coal combusted for electricity generation in 2017 was 26.08 kilograms carbon per mmbtu (EPA 2019).

Some of our calculators and applications let you save application data to your local computer. It was assumed that the electricity generated from an installed wind turbine would replace marginal sources of grid electricity.

1,140,649,958.9 metric tons of CO2 × 1/293 power plants =  3,893,003.27 metric tons CO2/power plant. Cookies are only used in the browser to improve user experience. (AVERT, U.S. national weighted average CO2 marginal emission rate, year 2018 data).

The average carbon coefficient of pipeline natural gas burned in 2017is 14.43 kg carbon per mmbtu (EPA 2019).

The medium growth coniferous and deciduous trees are raised in a nursery for one year until they become 1 inch in diameter at 4.5 feet above the ground (the size of tree purchased in a 15-gallon container).

Volume 2 (Energy). Use this oil conversion tool to convert between different units of weight and volume. Go to the equivalencies calculator page for more information. Waste Transfer Stations: A Manual for Decision-Making.

The average heat content of crude oil is 5.80 mmbtu per barrel (EPA 2019).

United States Environmental Protection Agency, You may need a PDF reader to view some of the files on this page. In the preamble to the joint EPA/Department of Transportation rulemaking on May 7, 2010 that established the initial National Program fuel economy standards for model years 2012-2016, the agencies stated that they had agreed to use a common conversion factor of 8,887 grams of CO2 emissions per gallon of gasoline consumed (Federal Register 2010). This method is best used as an estimation for suburban/urban areas (i.e., parks, along sidewalks, yards) with highly dispersed tree plantings and is not appropriate for reforestation projects. The rate of accumulation is equal to growth minus removals (i.e., harvest for the production of paper and wood) minus decomposition. barrel oil equivalent (boe) kcal Btu . The fraction oxidized to CO2 is assumed to be 100 percent (IPCC 2006). This value assumes that all the carbon in the diesel is converted to CO2 (IPCC 2006).


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