√70以上 amount of greenhouse gases in the atmosphere 301940

Greenhouse gases trap heat in the atmosphere through a process called the greenhouse effect Having some greenhouse gases in the atmosphere is natural Their heattrapping abilities keep Earth from being uncomfortably cold However, the amount of greenhouse gases in our atmosphere has increased over the past 150 years as people burn fossil Greenhouse gases are gases in the Earth's atmosphere that produce the greenhouse effect Changes in the concentration of certain greenhouse gases, from human activity (such as burning fossil fuels), increase the risk of global climate change Greenhouse gases include water vapor, carbon dioxide (CO 2 ), methane, nitrous oxide, halogenated 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 Carbon dioxide Methane Ozone Nitrous oxide Chlorofluorocarbons Greenhouse gases are gases that can trap heat

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Amount of greenhouse gases in the atmosphere

Amount of greenhouse gases in the atmosphere-Very roughly, each doubling of atmospheric carbon dioxide has the same effect on surface temperature Going from the level of carbon dioxide in the air before the industrial revolution, 280 parts per million by volume (280 ppm) to twice that, 560 ppm, and8 rows Greenhouse gas Chemical formula Global Warming Potential, 100year time horizon Atmospheric

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Human activities and the greenhouse effect Human activities are increasing the amount of some greenhouse gases in the atmosphere For example farming cattle releases methaneGreenhouse Gases Greenhouse gases trap heat in the atmosphere, which makes the Earth warmer People are adding several types of greenhouse gases to the atmosphere, and each gas's effect on climate change depends on three main factorsThe greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere Radiatively active gases (ie, greenhouse gases) in a planet's atmosphere radiate energy in all directionsPart of this radiation is directed towards the surface, thus warming it

The excess of greenhouse gases in the atmosphere is triggering harmful global warming, so reducing the amount of these gases should help to tackle climate change This can be done in two ways lower the emissions we are sending into the atmosphere, from activities such as industrial processes, power generation, transport and intensive agricultureGreenhouse gases like carbon dioxide exist in our atmosphere They are called greenhouse gases because they cause the atmosphere to act like the glass of greenhouse That is, the sun's rays pass through the atmosphere and heat up the earth, and then the greenhouse gases prevent the heat from leavingThe effect of greenhouse gases There are five gases of human origin that contribute most – together up to 95% of the total – to the increase in global warming Here you will discover the source of their emission, the time they spend in the atmosphere and what percentage they contribute to the greenhouse effect

Source EPA's Climate Change Indicators (16) Scientists have carefully examined all this evidence and made a startling discovery There's more carbon dioxide in the atmosphere now than at any other time in at least 650,000 years!The enhanced greenhouse effect What has scientists concerned now is that over the past 250 years, humans have been artificially raising the concentration of greenhouse gases in the atmosphere at an everincreasing rate, mostly by burning fossil fuels, but also from cutting down carbonabsorbing forestsGreenhouse gases and global warming Carbon dioxide (CO 2) and other greenhouse gases act like a blanket, absorbing IR radiation and preventing it from escaping into outer space The net effect is the gradual heating of Earth's atmosphere and surface, a

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 The majority of greenhouse gases come from burning fossil fuels to produce energy, although deforestation, industrial processes, and some agricultural practices also emit gases into the atmosphere Greenhouse gases act like a blanket around Earth, trapping energy in the atmosphere and causing it to warm This phenomenon is called the greenhouse Greenhouse gases include carbon dioxide, methane, and nitrous oxides Scientists have determined that carbon dioxide's warming effect helps stabilize Earth's atmosphere Remove carbon dioxide, and the terrestrial greenhouse effect would collapse Without carbon dioxide, Earth's surface would be some 33 °C (59 °F) cooler Climate experts say the world must stop adding to the total amount of greenhouse gas in the atmosphere by 50, and that can only be done by drastically reducing the burning of fossil fuels as soon as possible, among other measures The report, which was released days before a UN climate summit begins Oct 31 in Glasgow, found most major oil and gas producers

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Nitrous oxide is a powerful greenhouse gas that lasts for over 100 years in the atmosphere It is best known as laughing gas, but that kind of commercial use makes up only a tiny part of our emissions By far the biggest way we add nitrous oxide to the atmosphere is by growing crops with nitrogenbased fertilizers CFCs Up to 12,690Since the Industrial Revolution in the late 1700s and early 1800s, people have been releasing large quantities of greenhouse gases into the atmosphere That amount has skyrocketed in the past century Greenhouse gas emissions increased 70 percent between 1970 and 04 Emissions of carbon dioxide, the most important greenhouse gas, rose byAtmosphere lead to temperature increases The amounts of greenhouse gases in the global atmosphere are clearly changingSome evidences of these changes fo r carbon dioxide and CFC11 in recent years are given in the following table The values are the mean for June each year at Cape Grim (Tasmania, Australia)

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 Of the total amount of greenhouse gasses emitted, carbon dioxide covers 76% of the entire volume of gasses hence it is the highest volume of greenhouse gasses in the atmosphere Methane It is an attractive fuel found on the ground and the sea floor, but when it escapes to the atmosphere, it is known as atmospheric methane Methane gas emitted by cows and other livestock does have a significant impact on the amount of greenhouse gases in our atmosphere, which are the main culprits behind climate change and global Human activities produce large amounts of greenhouse gases (GHGs), primarily carbon dioxide (CO 2), and thus contribute to global warmingThe use of fossil fuels is the primary source of CO 2 emissions, but the removal of trees from forested land has also contributed Mature forests, having absorbed CO 2 from the atmosphere while growing, store carbon in wood,

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 Graph by NOAA Climategov based on data from NOAA ESRL According to the 19 AGGI report, the combined heating influence of the longlived, humanproduced greenhouse gases is 314 Watts for every square meter of Earth's surface Just over 80 percent of that is due to carbon dioxide (66%) and methane (16%) Water vapor is the greenhouse gas with the highest concentration For this reason, it causes about 2/3 of the greenhouse effect, trapping the infrared radiation within its molecules Carbon dioxide Carbon dioxide produces about 15% of the greenhouse effect and interacts with the atmosphere for both natural and anthropic causes By volume, the dry air in Earth's atmosphere is about 7809 percent nitrogen, 95 percent oxygen, and 093 percent argon A brew of trace gases accounts for the other 003 percent, including the greenhouse gases carbon dioxide, methane, nitrous oxide and ozone

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The Greenhouse Effect

 This imbalance between greenhouse gas emissions and the ability for natural processes to absorb those emissions has resulted in a continued increase in atmospheric concentrations of greenhouse gases Concentrations of CO2 in the atmosphere have increased by about 40% since the mid1800s The greenhouse effect happens when certain gases, which are known as greenhouse gases, accumulate in Earth's atmosphereGreenhouse gases include carbon dioxide (CO 2), methane (CH 4), nitrous oxide (N 2 O), ozone (O 3), and fluorinated gases Greenhouse gases allow the sun's light to shine onto Earth's surface, and then the gases, such as ozone,Water Vapour Methane Ozone Nitrous oxide Chlorofluorocarbons Greenhouse gases Sources As greenhouse gases are essential for the existence of life, they are present in the atmosphere in a trace amount Natural sources of GHGs are volcanos, respiration by living organisms, decay and combustion of organic matter, etc

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A molecule of a greenhouse gas has more of a warming influence when the gas is rarer; Measurements of greenhouse gases (GHGs), whether performed in the atmosphere, or over terrestrial or marine ecosystems, have led to a fundamental understanding of the Earth System during the last century Nevertheless, we still do not fully understand global greenhouse gas cycling Up to date measurements of GHG are still rare (as observation🔴 Answer 2 🔴 on a question Explain how changing the amount of greenhouse gases in the atmosphere affects the flow of heat out of Earth's atmosphere the answers to ihomeworkhelperscom

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Atmosphere Greenhouse gases can also reabsorb solar radiation reflected or reemitted from Earth's surface, trapping the heat in our atmosphere instead of letting it the amount of CO2 might trigger glacial advances and retreats GS Callendar in 1938 solved a set of equations linking Dear EarthTalk Could it really be true that a single large volcanic eruption launches more greenhouse gases into the atmosphere than the amount generated by all of humanity over history?4 rows  Greenhouse gases from human activities are the most significant driver of observed climate

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 Methane, by contrast, is mostly removed from the atmosphere by chemical reaction, persisting for about 12 years Thus although methane is a potent greenhouse gas, its effect is relatively shortlived Carbon Footprint ↑ Amount of greenhouse gases released to the atmosphere as a result of our daily activities It is measured in equivalent tonnes of CO 2 per person and year Carbon Capture and Storage ↑ Naturebased process by which CO 2 is taken from the atmosphere and stored in a safe location (like geological formations) where it is Greenhouse Gases Methane, Carbon Dioxide Share of Global GHG Emissions 3% A man scavenges for waste to recycle at a garbage dump in Linfen, China Landfill sites like this produce greenhouse gases because rotting organic waste like food waste emits methane which warms the atmosphere unless it is captured

Greenhouse Gas Wikipedia

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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 1270 years for HFCs to ,000 years for PFCs and about 3,0 years for SF6This chart shows the change in global greenhouse gas emissions over time Greenhouse gases are measured in 'carbon dioxideequivalents' (CO 2 e) Today, we collectively emit around 50 billion tonnes of CO 2 e each year This is more than 40% higher than emissions in 1990, which were around 35 billion tonnesAnd the amount of carbon dioxide and other greenhouse gases is continuing to increase

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