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Greenhouse 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, refrigerantsScientists measure the amount of greenhouse gases in the atmosphere in several ways They use satellites and other instruments to measure the amount of greenhouse gases in the air all around the world They also collect samples of air from specific places and then analyze these samples in aNow, over a century later, the mention of greenhouse gas usually evokes thoughts of carbon dioxide (CO 2)That's mainly because changes in the amount of CO 2 in the atmosphere have been linked to the warming of the atmosphere over this past century CO 2 is an important greenhouse gas, and along with water vapor, keeps the Earth warm enough to support life as we know it

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Quantity of greenhouse gases in the atmosphere

Quantity of greenhouse gases in the atmosphere-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 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

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 That sunlight creates warmth The big trick of a greenhouse is that it doesn't let that warmth escape That's exactly how greenhouse gases act They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere Overall, greenhouse gases are a good thingBuildup of greenhouse gases One problem that was brought about by human action and is definitely affecting the hydrosphere globally is that of the greenhouse gases (so called because of their heattrapping "greenhouse" properties) emitted to the atmosphereOf the greenhouse gases released by anthropogenic activities, carbon dioxide has received much attentionCarbon dioxide 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

 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 But the amount of greenhouse gases in the atmosphere has skyrocketed to detrimental levels in recent history Related Carbon dioxide soars to record breaking levels not seen in at least 800,000 yearsThe ratio of water component of the greenhouse effect to the CO 2 component is about 159 to 1 This means that the water vapor content of the atmosphere has to only fall from 041 percent to 0407 to wipe out the greenhouse effect of all the CO 2 in the atmosphere Given this sensitivity to the water vapor content it is clear that we really do not know whether the greenhouse gas

 The largest greenhouse gas by volume is actually the one most people tend to overlook water vapor, whose concentration varies significantly depending on temperature As the temperature of the atmosphere increases, the amount of humidity in the atmosphere also goes up, further heating our planet in a vicious cycleSince 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 bySince the Industrial Revolution began in the 1700s, people have added a substantial amount of greenhouse gases into the atmosphere by burning fossil fuels, cutting down forests, and conducting other activities (see the US and Global Greenhouse Gas Emissions indicators) When greenhouse gases are emitted into the atmosphere, many remain there

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 Greenhouse gases from human activities are the most significant driver of observed climate change since the mid th century 1 The indicators in this chapter characterize emissions of the major greenhouse gases resulting from human activities, the concentrations of these gases in the atmosphere, and how emissions and concentrations have changed over timeGreenhouse Gases Too Much of a Good Thing Human activity increases the amount of greenhouse gases in the atmosphere—mainly carbon dioxide from the burning of fossil fuels (coal, oil, and natural gas) The extra greenhouse gas may be trapping too much heat, abnormally raising Earth's temperaturesThe 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

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Greenhouse Gases

 Volcanoes—both on land and under the ocean—release greenhouse gases, so periods of high volcanic activity tend to be warmer Since the Industrial Revolution of the late 1700s and early 1800s, people have been releasing larger quantities of greenhouse gases into the atmosphere That amount has skyrocketed in the past century 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 causesGreenhouse 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 leaving Human activities like burning fossil fuels, are putting more greenhouse gases in the atmosphere

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 A number of factors influence the quantities of greenhouse gases released into the atmosphere, including economic activity, population, consumption patterns, energy prices, land use, and technology There are several ways to track these emissions, such as by measuring emissions directly, calculating emissions based on the amount of fuel that Wildfires emit more greenhouse gases than assumed in state climate targets A new study quantifying the amount of carbon stored and released through California forests and wildlands finds that wildfires and deforestation are contributing more than expected to the state's greenhouse gas emissions The 13 Rim Fire in California burned moreThe 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 agriculture

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 The greenhouse effect helps trap heat from the sun, which keeps the temperature on earth comfortable But people's activities are increasing the amount of heattrapping greenhouse gases in the atmosphere, causing the earth to warm up The earth's temperature depends on the balance between energy entering and leaving the planet's system The carbon cycle's sinks and sources help to regulate the amount of greenhouse gases in our atmosphere Greenhouse Gases Besides CO 2 there are other greenhouse gases These include water vapor, methane, nitrous oxide, and ozone Without any greenhouse gases, Earth would be an icy wasteland Greenhouse gases keep our planet livable byThe greenhouse effect is not a bad thing Without it, our planet would be too cold for life as we know it But if the amount of greenhouse gases in the atmosphere changes, the strength of the greenhouse effect changes too This is the cause of humanmade climate change by adding greenhouse gases to the atmosphere, we are trapping more heat

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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 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 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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Main Greenhouse Gases Multiple gases contribute to the greenhouse effect that sets Earth's temperature over geologic time Small changes in the atmospheric concentration of these gases can lead to changes in temperature that make the difference between ice ages when mastodons roamed the Earth, and the sweltering heat in which the dinosaurs livedThe three most important greenhouse gases in the atmosphere are carbon dioxide (CO 2), methane (CH 4) and nitrous oxide (N 2 O) While carbon dioxide is the greenhouse gas we hear the most about, methane and nitrous oxide have greater global warming potential (GWP)Methane has a GWP of 25 for a 100year period and nitrous oxide has a GWP of 298 As of 12, the warming effect of longlived greenhouse gases in Earth's atmosphere had increased by approximately 47% compared to 1990 Relative to preindustrial times, today's atmosphere absorbs an extra 3 watts of energy per square meter

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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 SF6 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 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

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 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, halogenatedMethane is the next of the greenhouse gases which has the biggest effect on global warming (15%) This is generated by activities such as livestock production, agriculture, sewage treatment, natural gas and oil distribution , coal mining, fuel use and is also given off from waste tips It lasts an average of 12 years in the atmosphere

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