Greenhouse effect
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Increased amounts of carbon dioxide and water vapor in the atmosphere can have long term effects by trapping heat radiated from the Earth. Carbon dioxide and water vapor molecules absorb infrared radiation from the Earth and re-release it as heat, contributing to the greenhouse effect. While water vapor levels remain fairly constant, the amount of carbon dioxide in the air has greatly increased over the past century due to human activities like burning fossil fuels.
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1. The document discusses various types of pollution including air pollution, greenhouse effect, ozone layer depletion, and acid rain.
2. It notes that pollution can be in the form of chemical substances or energy and outlines some of the causes and effects of different pollutants.
3. Finally, it provides some recommendations for controlling pollution such as enforcing anti-pollution laws and properly disposing of materials.
Environmental changes kartavya.pptx
Environmental change is caused by both natural processes and human influences. Natural causes include volcanic eruptions, ocean currents, variations in solar energy and greenhouse gases over long periods of time. Human activities that cause environmental change include increasing greenhouse gas emissions and aerosol particles in the atmosphere, trapping heat and warming the planet. Scientists detected ozone depletion in Antarctica in the 1980s caused by chlorofluorocarbons which increase UV radiation and endanger Arctic life. Governments are taking steps like phasing out ozone-depleting chemicals, promoting fuel efficient vehicles, and green initiatives to reduce pollution and mitigate climate change.
Climate change, global warming, greenhouse gases, ozone layer depletion, acid...
The document discusses various factors that influence climate change, including the sun's output, Earth's orbit, volcanic eruptions, drifting continents, and greenhouse gases. It notes that while the sun's output increased temperatures slightly in the early 20th century, measurements from space since 1979 show no long-term change in total solar energy despite ongoing warming of Earth. Greenhouse gases are identified as the primary driver of current climate change due to human activities like burning fossil fuels.
Greenhouse gases and their effect
This document discusses the composition of the Earth's atmosphere and greenhouse gases. It notes that while nitrogen and oxygen make up most of the atmosphere, trace gases like water vapor, carbon dioxide, methane and nitrous oxide have an outsized influence on climate. These greenhouse gases absorb and emit thermal radiation and warm the atmosphere, comprising what is known as the greenhouse effect. The document also outlines the sources and sinks of various greenhouse gases as well as their impacts on climate change like rising global temperatures and sea levels.
satyam.pptx
The document discusses global warming, including its causes, effects, and projections. It defines global warming as the increase in average temperatures due to greenhouse gas emissions. The major causes are greenhouse gases like carbon dioxide from burning fossil fuels and methane from agriculture. Effects discussed include rising sea levels, ecosystem disruption, and water scarcity. The document projects that global temperatures will increase between 1.4-5.8°C by 2100 and sea levels will rise by 9-88 cm, with more extreme weather. Precautions recommended include reducing emissions from vehicles, appliances, and industries.
Ozone Layer Depletion, Greenhouse Effect & Global Warming
This is a presentation regarding some of those little threats our Earth is going through....The presentation is made interesting with a wide range of pictures, illustrations and animations...Please download to see the animated slideshow...Hope this comes of help to you!
Air Pollution (1).ppt
This document discusses various topics related to air pollution and the atmosphere. It begins by defining greenhouse gases and their impact on global climate change, including consequences for sea levels, agriculture, and marine food. Next, it covers the structure of the atmosphere and composition of the troposphere. The document then discusses the greenhouse effect in more detail, and effects of global warming such as rising temperatures, sea levels, and impacts on agriculture and marine food. It concludes with methods for controlling global warming, such as reducing waste and emissions and using energy-efficient products.
GLOBAL_WARMING_PRESENTATION.pptx
Solomon T. Omitogun presented on global warming as part of a university course. The presentation defined global warming as the slow increase in the average temperature of the Earth's atmosphere due to increased greenhouse gases trapping heat. The main causes of global warming discussed were the emission of greenhouse gases like carbon dioxide, methane, and nitrous oxide from human activities such as burning fossil fuels and deforestation. Some effects of global warming mentioned included threats to biodiversity, rising sea levels, impacts on human communities like increased conflicts and migration, and more extreme weather. Mitigation measures proposed reducing greenhouse gas emissions through renewable energy, energy efficiency, sustainable transportation and infrastructure, and sustainable agriculture and forest management.
2AM SEMINAR WORK
The document discusses greenhouse gases and their effect on the environment. It defines greenhouse gases as gases that trap heat in the atmosphere and contribute to global warming. The main greenhouse gases are water vapor, carbon dioxide, and methane. The document discusses how human activities like burning fossil fuels and deforestation have greatly increased greenhouse gas levels since the Industrial Revolution. This intensified greenhouse effect has led to consequences like rising global temperatures, changes in weather patterns, and sea level rise. The document also examines potential solutions to mitigate the greenhouse effect through sectors like industry, transportation, renewable energy, and forestry.
Global warming and greenhouse effect
Global warming is caused by increased concentrations of greenhouse gases from human activities like burning fossil fuels and deforestation. The average surface temperature of the Earth has increased by about 0.8°C since the late 19th century, with about two-thirds of the increase occurring since 1980. Effects of global warming include sea level rise, changes in precipitation patterns, more extreme weather events, and species extinction as climates shift. While some factors like solar activity and particulate matter have small temporary effects, greenhouse gases are the dominant long-term cause of increased temperatures according to scientific evidence and models.
Subtopic 9.2.. slides
The document discusses the greenhouse effect and thinning of the ozone layer. It explains that the greenhouse effect occurs when greenhouse gases like carbon dioxide trap heat in the atmosphere, causing global warming. The main causes are human activities that emit CO2 like burning fossil fuels. The thinning of the ozone layer is caused by chlorofluorocarbons which destroy ozone molecules. This allows more UV radiation to reach the Earth's surface, harming plants, animals and humans. The greenhouse effect and thinning ozone layer disrupt ecosystems and can lead to issues like rising sea levels, more extreme weather, and skin cancer.
Subtopic 9.2 .. slide show
The document discusses the greenhouse effect and thinning of the ozone layer. It explains that the greenhouse effect occurs when greenhouse gases like carbon dioxide trap heat in the atmosphere, causing global warming. The main causes are human activities that emit CO2 like burning fossil fuels. The thinning of the ozone layer is caused by chlorofluorocarbons which destroy ozone molecules. This allows more UV radiation to reach the Earth's surface, harming plants, animals and humans. The greenhouse effect and thinning ozone layer disrupt ecosystems and can lead to issues like rising sea levels, more extreme weather, and skin cancer.
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B.tech. i es unit3.3 environment global environmental problems
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Climate change, global warming, greenhouse gases, ozone layer depletion, acid...
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Greenhouse effect
- 1. Greenhouse effect Global warming
- 2. Greenhouse effect and global warming Carbon dioxide and water vapor are natural components of air. As such, they have generally not been considered pollutants. However, the voluminous amount of carbon dioxide and water continously spewed into the air by motor vehicles and factories worldwide has become alarming.
- 3. Greenhouse effect and global warming Increased amounts of carbon dioxide and water vapor have possible long term effects. The maxima of solar radiation which enters the earth is in the shorter wavelenght ultraviolet and visible regions.
- 4. Greenhouse effect The earth also radiates enrgy butits maxima is in the longer wavelenght infrared region Both carbon dioxide and water vapor molecules are not by affectedby incoming shorter wavelenght solar radiation but they absorb heat (infrared radiation) given off by the earth.
- 5. Greenhouse effect and global warming This heat is released back to the lower atmosphere as their molecules vibrate. This is called the greenhouse effect. Both carbon dioxide and water vapor are called greenhouse gases.
- 6. Greenhouse effect and global warming But there is less problem with water vapor because its concentration in air remains fairly constant. On the other hand, the amount of carbon dioxide in air has tremendously increased in the past century because of man’s activities, mainly the burning of fossil fuels about 3 g of carbon dioxide is produce for every gram of fossil fuel burned.
- 8. Ozone Depletion Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone over Earth's polar regions.
- 9. Ozone Depletion The latter phenomenon is referred to as the ozone hole. In addition to these well-known stratospheric phenomena, there are also springtime polar tropospheric ozone depletion events
- 10. Ozone Depletion It is suspected that a variety of biological consequences such as increases in skin cancer, cataracts,[3] damage to plants, and reduction of plankton populations in the ocean's photic zone may result from the increased UV exposure due to ozone depletion.
- 11. Ozone Depletion