Global Warming
CONTENT
1. Introduction
1.1 Definition of Greenhouse Effect
1.2 History Background
1.3 Why Social Relevance
2. Chemical Significance
2.1 Carbon Dioxide
2.2 Methane
2.3 Nitrous Oxide
2.4 Chlorofluorocarbons
Bibliography
Draft References
1. Introduction
1.1 Natural Greenhouse Effect [1, 2, 3, 4, 5]
The natural greenhouse effect is the heating of the Earth due to the presence of greenhouse gases. Shorter–wavelength solar radiation from the sun passes through the Earth's atmosphere, and is then absorbed by the surface of the Earth, causing it to warm. Part of this absorbed energy is then reradiated back to the atmosphere as longer–wavelength infrared radiation. Most of this...show more content...
1.4 Social Relevance [1, 5, 8]
Global warming caused by the greenhouse effect is a concern to society. The problem influences health, agriculture, environment and other aspects. Therefore, it is important to understand this chemical significance of greenhouse gases and its formation to solve these problems.
2. Chemical Significance
2.1 Carbon Dioxide [ 3, 4, 6]
Carbon dioxide (CO2) is a colourless, odourless and non–flammable gas and is the most prominent greenhouse gas in the Earth's atmosphere. Fossil fuel burning and large–scale deforestation causes the increase in CO2.
C + O2 CO2
CH4 + 2O2 CO2 + 2H2O
The concentration of CO2 has increased from 290 ppmv to 380 ppmv after the Industrial Revolution.
Carbon dioxide is on the rise since 1750
2.2 Methane [3, 4, 6]
Methane (CH4) is a colourless, odourless and flammable gas. It is 20 times more powerful than CO2 as a greenhouse gas on a weight to weight basis. Its concentration has increased from 700 ppbv to 1720 ppbv throughout the twentieth century due to fossil fuel mining, agricultural practices and decomposition of organic compounds. CH4 can be destroyed in the atmosphere via reaction with the hydroxyl radical. The mean atmospheric lifetime of CH4 is about 8 years.
CH4 + OH CH3 + H2O
Methane is on the rise since 1750
2.3 Nitrous Oxide (Laughing Gas) [3,4,6]
Nitrous Oxide (N2O) is an odourless gas. It is 200 times more powerful as a Get more content
Outline
I.Introduction
Thesis statement: It is important that governments and people solve the Global Warming problem by decreasing buildings and greenhouses emissions, cutting down the industrial waste heat, and encouraging people to use biofuel in their vehicles.
II.Causes and effects of Global Warming
A.Human activities
1.Buildings and greenhouses emissions
2.Power plants and factories heat losses
B.Natural factors
1.Increasing the temperature of oceans
2.Clearing out and burning forests and the green landscapes
3.Solar activities
III.Solution for Global Warming
A.Decrease buildings and greenhouses emissions
B.Cut down industrial emissions
C.Encourage people to use biofuel
IV.Conclusion
Global Warming Nowadays, one...show more content...
It is important that governments and people solve the Global Warming problem by decreasing buildings and greenhouses emissions, cutting down industrial waste heat, and encouraging people to use biofuel in their vehicles. Researchers have found the three main sources of Global Warming: human activities (that is caused by their daily activities and its impacts on people's lives) and natural factors (which are caused by the chemical and physical impacts of natural sources) (Roleff 57– 61). To be precise, there are two kinds of human sources such as heat and gases emissions that are produced from buildings and greenhouses and heat losses that come from power plants and factories. Buildings and greenhouses
emissions are heat and gases emitted from any buildings and houses activities like air–conditioning, using gas for houses and buildings activities, the radiation that come from the electrical equipment. All these reasons have largely impacted the earth's weather due to increasing the proportion of carbon dioxide (Co2). Many researchers argue that buildings and greenhouses emissions offer some benefits to the earth's weather and environment because they believe that there is only a small amount of emissions in the earth's atmosphere which keep the balance of weather on the earth (Walker & King 12). The air–conditioning systems in summer absorb hot air from buildings and greenhouses and project it directly into
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Introduction Global warming: we've all heard these two words many times before. The problem is caused by us, and therefore– must be solved by us. Of course, it is going to take a few more people than those who are reading this report. The question is, do enough people know about global warming? Do they understand the real causes? Do you understand the real causes? Do you know how you are contributing to this worldwide issue? In this report I aim to inform you the answers to these questions, and some ways we can help prevent this problem. What is global warming? Global warming refers to average global temperature levels increasing– causing climate change. Climate change involves the average global temperatures increasing or...show more content...
Climatologists have been analysing global warming since the late 1800s. A majority of them have concluded that humans are the main cause of the unnatural rapid heating of the globe. The temperature on the planet Venus reaches up to 500 degrees Celsius due to the fact that its atmosphere is 97% made up of carbon dioxide. These numbers show that sustaining life on Venus would not be possible, and that the rapid build up in the atmosphere in earth cannot exceed a particular limit to keep life on earth. The figure below shows the warming and cooling of the globe, and it shows us how much greenhouse gases have contributed to the warming of the globe in the latter part of the 20th century:
Is global warming happening already? We know that global warming is already occurring because of the amount of data and statistics climatologists and scientists have developed over the past century. The IPCC concluded in its Fourth Assessment Report, that nearly 90 percent of the 29,000 observational data series examined revealed changes consistent with the expected response to global warming, and the observed physical and biological responses have been greatest in the regions that warmed the most. Some examples of observed climatic changes are: an increase of about 1В°F in the earth's global surface temperature in the 20th century; rise in average
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Global Warming
Global warming is an increase in the earth's temperature due to fossil fuels, industry, and agricultural processes caused by human, natural, and other gas emissions. (Melissa Phillips). This results in an increased emission of greenhouse gases. (Caroline Quatman). Short–wave solar radiation sinks into the Earth's atmosphere and warms its surface; while longwave infrared radiation emitted by earth's surface is absorbed, and then re–emitted by trace gases. (Brent C. Willhoite)
Climate changes occur in our earth's atmosphere due to a buildup of greenhouse gases. Greenhouse gases can occur naturally as well as a result of human activities. (Melissa Phillips). Problems can occur when higher concentrations of greenhouse...show more content... These gases trap heat and cause the greenhouse effect, rising global temperatures.(Heidi Sterrett).
Human activities add to the levels of these gasses, causing more problems. The burning of solid waste, fossil fuels, and wood products are major causes. Automobiles, heat from homes and businesses, and factories are responsible for about 80% of today's carbon dioxide emissions, 25% of methane, and 20% of the nitrous oxide emissions. The increase in agriculture, deforestation, landfills, industrial production, and mining contribute a significant share of emissions too The gases released into the atmosphere are tracked by emission inventories. An emission inventory counts the amount of air pollutants discharged into the atmosphere. These emission inventories are used by many organizations. NASA and meteorologists also use them.(Heidi Sterrett).
The Centers for Disease Control have been involved in studying global warming's effect on human health. Global warming is a danger to a human's health. Its affect on climate can adversely affect humans. Plagues have been attributed to global warming. An increase in temperature can result in a longer life cycle for diseases or the agents spreading them. Living in a warm area makes egg production a quicker process. Global warming will lead to more precipitation, which enables infectious diseases to be more easily contracted and spread.
Global warming is the process in which the Earth's temperature starts increasing. This happens because industry, fossil fuels, agricultural processes caused by human, natural, and other gas emissions, this factors increase greenhouse gases, greenhouse gases are made up of carbon dioxide, methane and nitrous oxide. The greenhouse gases stay in the atmosphere and prevent the suns warming rays to leave the Earth. So the sun's warming rays stay inside the Earth increasing its average temperature. Global warming isn't the end of the world, it's just a natural process in which the Earth cleans or rinse organisms.
Now a days the Automobiles, heat from homes and businesses, and factories are responsible for about 80% of today's carbon dioxide...show more content...
Lastly many bodies of water become polluted thanks to all the gasses in the atmosphere that mix with the clouds and fall as acid rain polluting rivers, and lakes and killing many animals. All of theses factors change our daily life and can ruin whole species, and all of this is because of temperature changes.
Many scientific methods of controlling or lowering the Earth's temperature are being researched; these can also be called geoengineering. Geoengineering is a method in which scientists can change the levels of greenhouse gases directly or indirectly. Also there could be methods that prevent greenhouse gasses to be emitted. There have never been any geoengineering solutions done on a global scale since it has to be almost proof less. But there have been some ideas that are being use on a small scale like the iron fertilization; this is a process in which iron is injected into the oceans to speed up the reproduction of plankton which breath carbon dioxide and emit oxygen, this is one solution that seems to have the least side effects thanks to the reason I just presented and also due to that plankton are the base of many marine animals food chain. So this method is being widely researched to see if it can be done on a global scale. Not only is lowering the levels of gases in the air important, but also lowering the level of gases we emit, and there have been many scientific breakthroughs like solar energy or cars that run Get