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There are many greenhouse gases but these are some of the most important water vapour, H2O carbon dioxide, CO2 methane, CH4 nitrous oxide, N2O CFCs (chlorofluorocarbons)The Greenhouse Effect The greenhouse effect is a natural phenomenon that insulates the Earth from the cold of space As incoming solar radiation is absorbed and reemitted back from the Earth's surface as infrared energy, greenhouse gases (GHGs) in the atmosphere prevent some of this heat from escaping into space, instead reflecting the energy back to further warm the surface Sources of greenhouse gases Some greenhouse gases, such as methane, are produced through agricultural practices, in the form of livestock manure, for example Others, like CO2, largely result

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Main greenhouse gases list-8 rows Greenhouse gas Chemical formula Global Warming Potential, 100year time horizon Atmospheric• Nitrous oxide (N2O);

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Targets for the first commitment period The targets for the first commitment period of the Kyoto Protocol cover emissions of the six main greenhouse gases, namely • Carbon dioxide (CO2);Carbon dioxide (CO 2 ), methane (CH 4 ), nitrous oxide (N 2 O), Ozone (O 3 ), and chlorofluorocarbons (CFCs), along with water vapour are known as greenhouse gases Due to human intervention, the amount of greenhouse gases in the atmosphere has increased remarkably causing the greenhouse effect Greenhouse Gases Names For example, methane, the main component in natural gas, remains in the atmosphere for a shorter time than CO 2, but is far more efficient at trapping heat, making it a more potent greenhouse gas Nitrous oxide is less abundant than methane, but even more efficient at trapping heat, and it stays in the atmosphere for a long time

Of the six greenhouse gases, three are of primary concern because they're closely associated with human activities Carbon dioxide is the main contributor to climate change, especially through the burning of fossil fuels Methane is produced naturally when vegetation is burned, digested or rotted without oxygen Oil and gas production, cattleGreenhouse gases that occur both naturally and from human activities include water vapor, carbon dioxide (CO 2), methane (CH 4), nitrous oxide (N 2 O) and ozone (O 3) Other greenhouse gases have essentially no natural sources, but are side products of industrial processes or manufactured for human purposes such as cleaning agents, refrigerantsAdditional trace gases produced by industrial activity that have greenhouse properties include nitrous oxide (N 2 O) and fluorinated gases (halocarbons) The latter includes sulfur hexafluoride, hydrofluorocarbons (HFCs), and perfluorocarbons (PFCs)

The term "greenhouse gases," or GHGs, covers a wide variety of gases that, once they are released into the atmosphere, trap the sun's heat When the sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and trapped in the lower atmosphere, heating the EarthCarbon dioxide is the most important greenhouse gas emitted by humans, but several other gases contribute to climate change, too Learn more about the major greenhouse gases by selecting pieces of the pie chart belowList of contributors — IPCC Reports 19 Refinement to the 06 IPCC Guidelines for National Greenhouse Gas Inventories Graphics

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This chart summarizes the global sources of greenhouse gases If there's one key takeaway from this chart, it's this No single piece of the global economy accounts for the lion's share of greenhouse gas emissions In other words, there's no main culprit, no magic bullet Greenhouse gases are gases in Earth's atmosphere that trap heat They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere The main greenhouse gases are Water vapor;The graphic for each gas (or class of gas) is from Figure 1, FAQ 71, IPCC, Assessment Report Four (07), Chapter 7 Humancaused sources are shown in orange and natural sources and sinks in teal Units are in grams (g) or metric tons (tonne international symbol t = 10 3 kg = 10 6 g) Multiples used in the figures are Gt (gigatonne) = 10 9 t

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Indeed, the main culprit is, as we might have expected, CO 2 In terms of the net increase in the greenhouse effect due to humanproduced greenhouse gases, CO 2 is responsible for the lion's share Greenhouse Gases Carbon Dioxide, Water Vapor, Nitrous Oxide, Aerosols Share of Global GHG Emissions 15% A jet airliner leaves condensation trails in the sky The trails are formed by soot and water vapor from the plane engines which burn keroseneTwo of the top countries on this list, China and India, are experiencing rapid economic growth Also on the list are the United States and European Union members—developed countries that have historically emitted and continue to emit greenhouse gases at high levels It is important to note that these ten countries produce a majority of global emissions

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 Carbon dioxide (CO2) Accounts for around threequarters of the warming impact of current human greenhousegas emissions The key source of CO2 is the burning of fossil fuels such as coal, oil andGreenhouse Gas Emissions by Sector and by Gas" pie charts, list the major greenhouse gases and discuss where each of them comes from and which ones are emitted in the largest quantities as a result of people's activities (Note that other lesson plans focus on CO 2 and the greenhouse effect, but you might still want to briefly discuss Carbon dioxide (CO 2) makes up the vast majority of greenhouse gas emissions from the sector, but smaller amounts of methane (CH 4) and nitrous oxide (N 2 O) are also emitted These gases are released during the combustion of fossil fuels, such as coal, oil, and natural gas, to produce electricity

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The above charts looked total greenhouse gas emissions – this included other gases such as methane, nitrous oxide, and smaller trace gases How does this breakdown look if we focus only on carbon dioxide (CO 2 ) emissions?Greenhouse gases have very different warming effects one tonne of methane does not have the same impact on warming as one tonne of CO 2Carbon dioxide equivalents (CO 2 e) attempt to convert the warming impact of the range of greenhouse gases into a single metric This is done by multiplying each gas by its 100year 'global warming potential' value the amount of warming oneGreenhouse gases are gases—like carbon dioxide (CO 2), methane, and nitrous oxide—that keep the Earth warmer than it would be without themThe reason they warm the Earth has to do with the way energy enters and leaves our atmosphereWhen energy from the

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Greenhouse Gas Report Devil's Gate Reservoir Sediment Removal and Management Project Los Angeles County, California OB‐1 Air Analyses – September 13 1 SECTION 10 – INTRODUCTION 11 REPORT PURPOSE The purpose of this Greenhouse Gas Report (GGR) is an analysis of potential climate change /Activities produce four major greenhouse gases (Figure 1) Carbon dioxide (CO2) Carbon dioxide enters the atmosphere through burning fossil fuels (ie, coal, natural gas, and oil), solid waste, trees, and wood products Certain chemical reactions (eg, manufacturing cement)Scientists attribute the global warming trend observed since the mid th century to the human expansion of the "greenhouse effect" 1 — warming that results when the atmosphere traps heat radiating from Earth toward space Certain gases in the atmosphere block heat from escaping Longlived gases that remain semipermanently in the atmosphere and do not respond

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First, let us tackle the first question What are the anthropogenic greenhouse gas emissions in the first place? In general, fluorinated gases are the most potent and longest lasting type of greenhouse gases emitted by human activities There are four main categories of fluorinated gases—hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF 6 ), and nitrogen trifluoride (NF 3 )The program is funded in part by a $17 million grant through California Climate Investments (CCI), a statewide program that puts billions of capandtrade dollars to work reducing greenhouse gas emissions, strengthening the economy, and improving public health –

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 Greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, and ozone The major greenhouse gases are water vapor, which causes about 3670% of the greenhouse effect on EarthGreenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth's surface and reradiating it back to Earth's surface, thus contributing to the greenhouse effect Carbon dioxide, methane, and water vapour are the most important greenhouse gases (To a lesser extent, surfacelevel ozone, nitrous oxides, and fluorinated gasesGreenhouse Gases The three most common types of greenhouse gases are Carbon Dioxide (CO 2) Carbon dioxide enters the atmosphere through the burning of fossil fuels (oil, natural gas, and coal), solid waste, trees and wood products, and as a result of other chemical reactions such as making cementCarbon dioxide is removed from the atmosphere and stored when it is absorbed

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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 °F), rather than the present average of 15 °C (59 °F)Let's consider the principal GHGs one at a time, starting with water vapor, the most abundant greenhouse gas in the atmosphere according to NOAA's National Climatic Data Center (NCDC) Water Vapor Carbon Dioxide (CO 2) Methane (CH 4) Nitrous oxide (N 2 O) Fluorinated Gases (HFCs, PFCs, SF 6) References and Resources In Parts B and C These labs introduce students to two of the most significant (and complex) phenomena related to our planet's climate Earth's radiation balance and greenhouse gasesMisconceptions related to these two topics are commonplace among both students and the adult population Reviewing Parts B and C carefully and reading the articles accessible from the

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And • Sulphur hexafluoride (SF6) The maximum amount of emissions (measured as the Greenhouse gases warm the planet Scientists know with virtual certainty that increasing greenhouse gas concentrations tend to warm the planet In computerbased models, rising concentrations of greenhouse gases produce an increase in the average surface temperature of the earth over time The major Greenhouse Gas, carbon dioxide, emitted naturally and by the burning of fossil fuels, stays in the atmosphere a long time Its warming effect occurs even when the sky is clear and dry Climate scientists are so concerned about carbon dioxide because the more carbon dioxide in the atmosphere, the hotter the earth will become, changing

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