The largest source of anthropogenic greenhouse gases in the United States is

Human activities are responsible for almost all of the increase in greenhouse gases in the atmosphere over the last 150 years. 1 The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation Carbon dioxide (CO2): Carbon dioxide enters the atmosphere through burning fossil fuels (coal, natural gas, and oil), solid waste, trees and other biological materials, and also as a result of certain chemical reactions (e.g., manufacture of cement)

Sources of Greenhouse Gas Emissions US EP

  1. The largest source of anthropogenic greenhouse gases in the United States is _____, followed by _____. electricity generation; transportaiton The oceans hold _______ carbon than the atmosphere
  2. The transportation sector is one of the largest contributors to anthropogenic U.S. greenhouse gas (GHG) emissions
  3. In the United States, most of the emissions of human-caused (anthropogenic) greenhouse gases (GHG) come primarily from burning fossil fuels —coal, natural gas, and petroleum—for energy use
  4. Carbon dioxide (CO 2): Fossil fuel use is the primary source of CO 2. CO 2 can also be emitted from direct human-induced impacts on forestry and other land use, such as through deforestation, land clearing for agriculture, and degradation of soils
  5. Overview Total emissions. Total U.S. anthropogenic (human-caused) greenhouse gas emissions in 2009 were 5.8 percent below the 2008 total ().The decline in total emissions—from 6,983 million metric tons carbon dioxide equivalent (MMTCO 2 e) in 2008 to 6,576 MMTCO 2 e in 2009—was the largest since emissions have been tracked over the 1990-2009 time frame

The US Environmental Protection Agency (EPA) estimates the principal anthropogenic sources in the United States to be (in order of importance) (i) livestock (enteric fermentation and manure management), (ii) natural gas production and distribution, (iii) landfills, and (iv) coal mining (10) Methane is a potent greenhouse gas 28 to 36 times more effective than CO 2 at trapping heat in the atmosphere over a 100-year period, per the latest Intergovernmental Panel on Climate Change (IPCC) assessment report (AR5) Exit. Learn more about methane emissions in the United States. Methane Emissions from Landfill

The largest single source is energy supply—primarily coal fired power plants, and natural gas—used by consumers for electricity and heating Fossil fuel combustion is the largest source of U.S. GHGs, currently accounting for 75% of total emissions. Since 1990, fossil fuel consumption has grown at a rate of 0.2%. However, both GHG emissions and fossil fuel consumption have decreased since 2005 while GDP kept growing.

Overview of Greenhouse Gases US EP

The United States produced 6.6 billion metric tons of carbon dioxide equivalent greenhouse gas (GHG) emissions in 2019, the second largest in the world after greenhouse gas emissions by China and among the countries with the highest greenhouse gas emissions per person.In 2019 China is estimated to have emitted 27% of world GhG, followed by the United States with 11%, then India with 6.6% Carbon dioxide (CO2): Carbon dioxide enters the atmosphere through burning fossil fuels (coal, natural gas, and oil), solid waste, trees and wood products, and also as a result of certain chemical reactions (e.g., manufacture of cement) Sources of Greenhouse Gas Emissions China has been the world's largest source of anthropogenic CO 2 emissions, surpassing the Sustainable Systems, University of Michigan. 2020. Greenhouse Gases Factsheet. Pub. No. CSS05-21. September 2020 United States • The U.S. represents less than 5% of the world's total population, but.

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The primary greenhouse gas emitted by human activities in the United States was CO 2 , representing approximately 85 percent of total greenhouse gas emissions. The largest source of CO 2 , and of overall greenhouse gas emissions, was fossil fuel combustion The largest source of anthropogenic methane emissions is agriculture, closely followed by gas venting and fugitive emissions from the fossil-fuel industry. The largest agricultural methane source is livestock. Agricultural soils emit nitrous oxide partly due to fertilizers 47 percent and 58 percent of total anthropogenic emissions of methane and nitrous oxide, respectively (IPCC, 2007b). Nitrous oxide from soils and methane from enteric fermentation constituted the largest sources of non-CO 2 greenhouse gas emission from agriculture in 2005, 38 percent and 32 percent respectively (EPA, 2006a). Biomass burnin Fluorinated Gases (HFCs, PFCs, SF 6). Fluorinated gases are emitted in smaller quantities than the other greenhouse gases, but what they lack in volume they can make up in potency and long lifespans in the atmosphere, ranging from 1-270 years for HFCs to 800-50,000 years for PFCs and about 3,200 years for SF6

Fossil fuel combustion is the largest source of U.S. GHGs, currently accounting for 76% of total emissions. Since 1990, fossil fuel consumption hasgrown at about the same rate as GHG emissions—both have grown slower than GDP. The report later states, It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together 2 Greenhouse Gases in the United States: 2010 to 2030 United States Environmental Protection Agency the largest share of GHG emissions come from human activities. GHG emissions from anthropogenic sources have increased significantly over a relatively short time frame (~100 years) and are projected to. Approximately 90% of U.S. greenhouse gas emissions from anthropogenic sources come from energy production and use, most ofmore » On a per capita basis, the United States is one of the world's largest sources of greenhouse gas emissions, comprising 4% of the world's population, yet emitting 23% of the world's greenhouse gases

IN THE UNITED STATES COURT OF APPEALS FOR THE DISTRICT OF COLUMBIA CIRCUIT Fossil Fuel Combustion Is One of the Largest Sources.....14 II. Rising Greenhouse Gas Levels Have Led to Changes to the Earth's to elaborate on the need to address anthropogenic emissions of greenhouse gases, based on our current understanding of the science. W Coal-burning power plants are the largest U.S. source of Carbon dioxide pollution they produce 2.5 billion tons every year. Automobiles, the second largest source, create nearly 1.5 billion tons of CO2 annually. Effects of Global Warming Global warming is already causing damage in many parts of the United States. In 2002 The largest source of anthropogenic greenhouse gases in the United States is _____, followed by _____. A) agriculture; transportation the main anthropogenic greenhouse gas produced in the United States E) the only greenhouse gas presently increasing in the atmosphere

Fast Facts on Transportation Greenhouse Gas Emissions US EP

  1. The primary sources of greenhouse gas emissions in the United States are: Electricity production (30 percent of 2014 greenhouse gas emissions) - Electricity production generates the largest share of greenhouse gas emissions. Approximately 67 percent of our electricity comes from burning fossil fuels, mostly coal and natural gas. 2
  2. United States Environmental Protection Agency Global Anthropogenic Non-002 Greenhouse Gas Emissions: 1990-2020 fugitive emissions from natural gas and oil systems are the largest source of non- CO2 GHG emissions from this sector, accounting for 51 and 63 percent of energy related emissions in 1990 and 2020, respectively..
  3. The following sections present the anthropogenic sources of greenhouse gas emissions, briefly discuss the emission pathways, summarize the emission estimates, and explain the relative importance of emissions from each source category. Landfills are the largest single anthropogenic source of methane emissions in the United States. There are.
  4. Anthropogenic Causes of Greenhouse Gases Anthropogenic sources of greenhouse gases in the United States. (a) The largest contributions of methane in the atmosphere arise from gut bacteria that help many livestock species digest plant matter, landfills that experience decomposition in low-oxyge
  5. This includes emissions from natural sources (around 40% of emissions), and those originating from human activity (the remaining 60% - known as anthropogenic emissions). The largest source of anthropogenic methane emissions is agriculture, responsible for around a quarter of the total, closely followed by the energy sector, which includes.
  6. g trend observed since the mid-20 th century to the human expansion of the greenhouse effect 1 — war
  7. Landfill sites like this produce greenhouse gases because rotting organic waste like food waste emits methane which warms the atmosphere unless it is captured. Advanced industrialsed countries like the United States, the UK and Japan throw away between 20% and 30% of edible food. Processing waste water also produces methane

There is no question that the meat, egg, and dairy industries contribute significantly to greenhouse gas emissions. The Humane Society of the United States, the nation's largest animal protection organization representing 1 in 30 Americans, encourages each individual to take important, daily steps to mitigate th the largest anthropogenic source of carbon dioxide emissions in the United States. WHEREAS, methane is a powerful greenhouse gas, 84 times more effective at trapping heat than carbon dioxide over a 20-year timeframe

Where greenhouse gases come from - U

A greenhouse gas (GHG or GhG) is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor (H 2 O), carbon dioxide (CO 2), methane (CH 4), nitrous oxide (N 2 O), and ozone (O 3).Without greenhouse gases, the average temperature of Earth's surface would be about −18 °C (0. 1. China . China is the largest emitter of carbon dioxide gas in the world, with 10.06 billion metric tons in 2018. The primary source of CO2 emissions in China is fossil fuels, notably coal burning The world's countries emit vastly different amounts of heat-trapping gases into the atmosphere. The chart above and table below both show data compiled by the International Energy Agency, which estimates carbon dioxide (CO 2) emissions from the combustion of coal, natural gas, oil, and other fuels, including industrial waste and non-renewable municipal waste , representing the third largest source of CH 4 emissions in the United States, behind natural gas systems and enteric fermentation2. Figure 1. Methane emissions from MSW and industrial waste landfills from 1990 to 2010 (million MT CO 2 e). 2 Over 1,900 landfills currently operate in the U.S. with a small number of the largest landfills receivin All greenhouse gas emissions The problem with focusing purely on CO2 from burning fossil fuels is that it ignores other greenhouse gases and non-fossil-fuel sources of CO2

Global Greenhouse Gas Emissions Data US EP

Methane Gas: Major Source Of Methane GasA Reflection on the U

Electricity and Heat Production (25% of 2010 global greenhouse gas emissions): The burning of coal, natural gas, and oil for electricity and heat is the largest single source of global greenhouse gas emissions.; Industry (21% of 2010 global greenhouse gas emissions): Greenhouse gas emissions from industry primarily involve fossil fuels burned on site at facilities for energy 12 California was the second largest contributor to GHG emissions in the United States (WRI 2018). The 13 California Air Resources Board (CARB) compiles the California Greenhouse Gas Emission Inventory, 14 which tracks statewide anthropogenic GHG emissions. The inventory provides estimates of anthropogenic How this indicator was calculated. Note: Emission levels for some years have been revised in light of improvements to estimation methods and availability of new data. Source: Environment and Climate Change Canada (2021) National Inventory Report 1990-2019: Greenhouse Gas Sources and Sinks in Canada. In 2019, the combined emissions from Alberta and Ontario, the largest emitters, represented 60%.

Cows and other ruminants account for just 4 percent of all greenhouse gases produced in the United States, he said, and beef cattle just 2 percent of direct emissions. Better breeding, genetics and nutrition have increased the efficiency of livestock production in the U.S. In the 1970s, 140 million head of cattle were needed to meet demand The United States is the world's largest emitter of greenhouse gases, responsible for nearly one-quarter of all greenhouse gas emissions worldwide. Absent federal leadership on confronting global climate change, the task of reducing greenhouse gas emissions in the United States is left to individual states sources and sinks of greenhouse gases (GHGs) is essential for addressing climate change. This inventory adheres to both (1) a comprehensive and detailed set of meth-odologies for estimating sources and sinks of anthropogenic GHGs, and (2) a common and consistent mechanism that enables Parties to the United Nations Framework Convention o

EIA - Emissions of Greenhouse Gases in the United States 200

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The U.S. Department of Energy's Office of Scientific and Technical Informatio Greenhouse Gas Emissions and Removals from Forest Land, Woodlands, and Urban Trees in the United States, 1990-2018 Introduction As a signatory to the United Nations Framework Convention on Climate Change (UNFCCC),e th United States has been reporting an economy-wide Inventoryof greenhouse gas (GHG) emissionsand removals since the mid-1990s (U Some people's footprints are much higher than others; for instance, those that live in developed countries such as the United States (the largest greenhouse gas emitter), emit much greater amounts than those living in undeveloped countries of the world. Various activities, such as agricultural and deforestation practices, also emit greenhouse.

Overview of Greenhouse Gases | Greenhouse Gas (GHG

2 The United States Climate Alliance is a coalition of governors committed to reducing greenhouse gas emissions consistent with the Paris Agreement, aiming to reduce greenhouse gas emissions by at least 26-28 percent below 2005 by 2025 To prevent severe climate change we need to rapidly reduce global greenhouse gas emissions. The world emits around 50 billion tonnes of greenhouse gases each year [measured in carbon dioxide equivalents (CO 2 eq)]. 1 . To figure out how we can most effectively reduce emissions and what emissions can and can't be eliminated with current technologies, we need to first understand where our.

Main articles: Greenhouse gas emissions by the United States and United States federal register of greenhouse gas emissions The United States emitted 16.3% more GHG in 2005 than it did in 1990. [29] According to a preliminary estimate by the Netherlands Environmental Assessment Agency, the largest national producer of CO 2 emissions since 2006. In the United States, the Environmental Protection Agency (EPA) estimates that the largest sources of anthropogenic methane emissions are natural gas and petroleum systems, enteric fermentation (livestock), landfills, coal mining, and manure management

The burning of coal, oil, and natural gas to produce electricity and heat accounts for one-quarter of worldwide human-driven emissions, making it the largest single source. In the United States it. List Of Greenhouse Gases. CO2 from fossil fuel consumption is the best known source of greenhouse gas, though certainly not the only one. 11. Water Vapor (H2O) -. Water vapor, although it sounds innocent enough, is one of the biggest contributors to global climate change. Interestingly, water vapor is not directly emitted from human activity Global fisheries have long been fundamental in molding cultural identities, maintaining economic sustainability, and providing a reliable source for food production. The distribution and production of food, such as that generated from fisheries, is responsible for a quarter of anthropogenic greenhouse gas (GHG) emissions (Parker et. al 2018) United States for 2007 greenhouse gas emissions, only behind Texas. However, from a The current inventory compiling statewide anthropogenic greenhouse gas emissions An emissions inventory that identifies and quantifies the sources and sinks of these greenhouse gases is essential for addressing climate change greenhouse gas emitted by human activities in the United States was carbon dioxide (CO2), representing approximately 85 percent of total greenhouse gas emissions. The largest source of CO2 was from the combustion of fossil fuels. Methane emissions, which have steadily declined since 1990, resulte

Anthropogenic emissions of methane in the United States PNA

Natural gas constitutes the single largest anthropogenic source of methane emissions, and is released during oil and gas extraction. Oil and gas reservoirs, which often occur together, exist. Greenhouse Gas Emissions and Removals F rom Forest Land, Woodlands, and Urban Trees in the United States, 1990-2019 Introduction As a signatory to the United Nations Framework Convention on ClimateChange (UNFCCC), the United States has reported an economy-wide inventory of greenhouse gas (GHG) emissions and removals since the mid-1990s (U.S. EP

Basic Information about Landfill Gas US EP

In March 2015 the United States, under president Obama, pledged to reduce its emissions of greenhouse gases by 26-28% by 2025 relative to US emissions in 2005. In other words, the US pledged that greenhouse gas emissions from the US in 2025 would be 26-28% lower than US greenhouse gas emissions were in the year 2005 4. Emissions means the release of greenhouse gases and/or their precursors into the atmosphere over a specified area and period of time. 5. Greenhouse gases means those gaseous cons tituents of the atmosphere, both natural and anthropogenic, that absorb and re-emit infrared radiation. 6 Irvine, Calif., May 17, 2021 — Greenhouse gases and aerosol pollution emitted by human activities are responsible for increases in the frequency, intensity and duration of droughts around the world, according to researchers at the University of California, Irvine. In a study published recently in Nature Communications, scientists in UCI's Department of Civil & Environmental Engineering. The United States is the World's Largest Emitter of Greenhouse Gases Per Capita. Around 2007, China surpassed the US as the world's largest emitter of greenhouse gases in terms of total output. Per person (per capita), however, China's emissions are much smaller

Anthropogenic Greenhouse Gas Emissions METEO 469: From

Greenhouse Gases Factsheet Center for Sustainable System

from both the net anthropogenic emissions of an agreed set of greenhouse gases, in each year of that time period, and from the initial concentrations of those greenhouse gases in the beginning of the period. Quantitative emission limitation and reduction objectives 2. For the purposes of this Protocol, the following greenhouse gases not. Key Points. The United States is the highest producer of greenhouse gases when measured on a per capita basis. Overall, China is the world's largest producer. Greenhouse gas emissions surged to.

Greenhouse gas emissions by the United States - Wikipedi

The United States saw the largest decline in energy-related CO 2 emissions in 2019 on a country basis - a fall of 140 Mt, or 2.9%, to 4.8 Gt. US emissions are now down almost 1 Gt from their peak in the year 2000, the largest absolute decline by any country over that period. A 15% reduction in the use of coal for power generation underpinned. Jurisdiction for greenhouse gases and energy policies is shared between the federal government and the states. 53 For example, states regulate the distribution of electricity and natural gas to consumers, while the Federal Energy Regulatory Commission regulates wholesale sales and transportation of natural gas and electricity. In addition, many. IPCC is a United Nations-sponsored scientific body that is open to all UN members. Chart on right: Figure 1.1b Global anthropogenic greenhouse gas emissions in 2004. Vertical scale is in Gt CO 2 eq/yr = Teragrams (or million metric tons) of carbon dioxide equivalent per year. Source: Adapted from Olivier et al., 2005, 2006 as quoted in www.ipcc. Anthropogenic Contributors to Climate Change. Since the start of the Industrial Revolution, humans have engaged in a range of behaviors (e.g., burning fossil fuels as an energy source and deforestation) that have increased the release of carbon dioxide into the atmosphere

Methane is a greenhouse gas, and increases in atmospheric methane concentration over the past 250 years have driven increased radiative forcing of the atmosphere. Increases in atmospheric methane concentration since 1750 account for approximately 17% of increases in radiative forcing of the atmosphe If air pollution would be controlled by traditional end-of-pipe techniques alone to abate fine particulates, but leaving greenhouse gas emissions unchanged, global warming could be enhanced by 0.51(±0.03) °C, while removal of all anthropogenic aerosols can unleash 0.73(±0.03) °C (and >2 °C in the United States) Sources of Greenhouse Gases. The principal anthropogenic greenhouse gases are carbon dioxide, methane, nitrous oxide, and chlorofluorocarbons. They do not react to changes in either temperature or air pressure and thus do not get removed easily like water that condenses to become rain or snow. Their long atmospheric lifetimes allows them to. Electricity, heat production, and transportation are the biggest sources of global CO 2 emissions. Broken down by fuel type, the single largest source of global CO 2 emissions is the consumption of coal, followed by petroleum, then natural gas. CO 2, like other greenhouse gases, is found naturally in the Earth's atmosphere 2017 to withdraw the United States from the Paris Agreement, the international the largest contributor of greenhouse gas emissions: animal agriculture. Nearly all of the focus has been on reducing 40% of all anthropogenic sources of methane and 65% of nitrous oxide—two highly potent greenhouse gases. 12. Based o

GREENHOUSE GASES | 4.12-3 has increased over the last century. Agricultural soil management and mobile source fossil fuel combustion are the major sources of N2O emissions. The GWP of nitrous oxide is approximately 310 times that of CO2. Fluorinated Gases. Fluorinated gases, such as HFCs, PFCs, and SF6, are powerful GHGs tha United Nations-sponsored Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) from Working Group I (WGI) states that 'Most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations' (IPCC 2007, 8 Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels. The global average surface temperature rose 0.6 to 0.9 degrees Celsius (1.1 to 1.6° F) between 1906 and 2005, and the rate of temperature increase has nearly.

Overview of Greenhouse Gases Greenhouse Gas (GHG

Current levels of the greenhouse gases carbon dioxide, methane, and nitrous oxide in our atmosphere are higher than at any point over the past 800,000 years, United States (Change Greenhouse Gas Emissions Data. The Oregon Global Warming Commission submits a report to the Oregon Legislature every two years, publishing data on current greenhouse gas emissions, trends, and steps we need to take to reduce emissions. The data below is taken from the 2018 Oregon Global Warming Commission report Most of the world's greenhouse gas emissions come from a relatively small number of countries. China, the United States, and the nations that make up the European Union are the three largest emitters on an absolute basis. Per capita greenhouse gas emissions are highest in the United States and Russia

between the effects of increasing anthropogenic aerosols and greenhouse gases. In AER, extreme high temperatures and the number of days with temperatures above the 90th percentile decline over most of the United States. The strongest response occurs in the western United States (22.08C and 214 days, regionally averaged) and the weakest response. The 100 fossil fuel producers around the world known as carbon majors are responsible for almost three-quarters of the total greenhouse gas emissions, according to a report Sources of Greenhouse Gas Emissions Per the U.S. Environmental Protection Agency's (EPA) Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2015, total United States GHG emissions were approximately 6,586.7 million metric tons (MMT) CO 2 e in 2015 (EPA 2017b). The primary GHG emitted by huma With a global warming potential of 28 over a 100-year horizon, methane is a potent greenhouse gas (IPCC, AR5). Atmospheric methane has a lifetime of about a decade, and it is ultimately oxidized to CO 2. It is one of the greenhouse gases targeted by the Kyoto Protocol, and may well be regulated by the United States in the future

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Greenhouse gas - Wikipedi

1. Short title This Act may be cited as the Safe Climate Act of 2006. 2. Finding; Sense of Congress (a) Findings The Congress finds as follows: (1) The United States is a party to the 1992 United Nations Framework Convention on Climate Change, which has the objective of stabilizing greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic. The EPA prepares the official U.S. Inventory of Greenhouse Gas Emissions and Sinks (the U.S. GHG Inventory) to comply with commitments under the United Nations Framework Convention on Climate Change (UNFCCC). This inventory, which includes recent trends, is organized by industrial sectors Methane is the second most important anthropogenic greenhouse gas in the atmosphere after carbon dioxide 1.Methane emissions are related to (i) the production of fossil fuels, i.e. crude oil. usage in passenger vehicles (0.9 million MTCDE) are the two largest individual sources of greenhouse gas emissions in Thurston County. This information anthropogenic greenhouse gas emissions and their impacts on climate change, the projected impacts of climate change on the United States, Washington State, and Thurston County, as well as.

Anthropogenic emissions of methane in the United States

Methane makes up only 9% of anthropogenic greenhouse gases, but it has 86 times the global warming potential of CO 2 in the first 20 years after it is emitted (see box on page 14). Scientists. state. Greenhouse gases are typically analyzed by sector or type of activity that results in GHG emissions. As shown in Exhibit 3.8-1, California produced 4million 41.5MTCO . 2. e in 2014. Combustion of fossil fuel in the transportation category was the single largest source of California's GHG , accounting for 37 emissions in 201 It contains the UK's largest chemical and refining cluster and with it the largest associated greenhouse gas emissions (for comparison, Houston is the largest in the United States). As such, it contains assets from many sectors, including refining, hydrogen production, steel, waste-to-energy, biorefining, and pharmaceuticals

United States: Climate PolicyIntroductionThe United States is the world's third most populous country. It is also its wealthiest and most militarily powerful country, its largest consumer of energy, and its second-largest emitter of greenhouse gases (just behind China, which edged it out in 2007). Source for information on United States: Climate Policy: Climate Change: In Context dictionary Yet the United States remains the largest contributor to cumulative historic emissions . 8 Greenhouse gas emissions are pervasive throughout the economy, extending across sectors from power, transport, and industry to buildings and agriculture. For the United States in particular, 83 to 85 percent o Cars, trucks, and buses powered by fossil fuels are major contributors to air pollution. In fact, transportation emits more than half of nitrogen oxides in our air, and is a major source of global warming emissions in the US. ;Studies have linked pollutants from vehicle exhaust to adverse impacts on nearly every organ system in the body The United States and China are the biggest contributors of these gases with the European Union coming in third. The major culprit of gas emissions is the burning of fossil fuels (coal, oil and natural gas). It occurs naturally from a number of sources. Methane is the second largest culprit of the greenhouse gases The EPA's Greenhouse Gas Inventory Report concluded that fossil fuel combustion produced 78 percent of all greenhouse gases emitted in the United States. In light of this huge number, Farm animals are a relatively small player in the big picture of greenhouse gas emissions, particularly in the developed world, says Hristov Common measurement for a ton in the United States. A short ton is equal to 2,000 lbs or 0.907 metric tons. Sink Any process, activity or mechanism that removes a greenhouse gas, an aerosol or a precursor of a greenhouse gas or aerosol from the atmosphere. Solar Radiation Electromagnetic radiation emitted by the Sun