Global Warming
Introduction: Global warming is gradually becoming a serious concern to our environment and our planet as a whole. Nature is now showing signs with unique changes affecting our lives. When the surface temperature of the earth heats up human beings are not the only ones who feel the changes and also react in some way. Animals and sometimes even plants will also be affected by the global warming.
What is global warming: An overall warming of the planet based on average temperature over the entire surface. It refers to the increasing average temperature of Earth 's atmosphere and oceans since the late 19th century and its probable continuation. Warming of the climate system is unequivocal and scientists are more than 90% certain that most of it is caused by increasing concentrations of greenhouse gases produced by human activities such as deforestation and the burning of fossil fuels.
Causes of global warming: The causes are mainly from us the human race and the effects on us will be severe. * Greenhouse gases: The greenhouse effect is the procedure by which absorption and emission of infrared radiation by gases in the atmosphere warm a planet 's lower atmosphere and surface. The major greenhouse gases are water vapor which causes about 36–70% of the greenhouse effect, carbon dioxide (CO2) which causes 9–26%, methane (CH4) which causes 4–9% and ozone (O3) which causes 3–7%. Human activity since the industrial revolution has increased the amount of greenhouse gases in the atmosphere leading to increased radioactive forcing from CO2, methane, troposphere ozone, CFCs and nitrous oxide. * Solar activity: Solar variations causing changes in solar radiation energy reaching the Earth have been the cause of past global warming. The effect of changes in solar forcing in recent decades is uncertain but small with some studies showing a slight cooling effect while others studies suggest a slight warming effect. An increase in solar activity should warm the
What is global warming: An overall warming of the planet based on average temperature over the entire surface. It refers to the increasing average temperature of Earth 's atmosphere and oceans since the late 19th century and its probable continuation. Warming of the climate system is unequivocal and scientists are more than 90% certain that most of it is caused by increasing concentrations of greenhouse gases produced by human activities such as deforestation and the burning of fossil fuels.
Causes of global warming: The causes are mainly from us the human race and the effects on us will be severe. * Greenhouse gases: The greenhouse effect is the procedure by which absorption and emission of infrared radiation by gases in the atmosphere warm a planet 's lower atmosphere and surface. The major greenhouse gases are water vapor which causes about 36–70% of the greenhouse effect, carbon dioxide (CO2) which causes 9–26%, methane (CH4) which causes 4–9% and ozone (O3) which causes 3–7%. Human activity since the industrial revolution has increased the amount of greenhouse gases in the atmosphere leading to increased radioactive forcing from CO2, methane, troposphere ozone, CFCs and nitrous oxide. * Solar activity: Solar variations causing changes in solar radiation energy reaching the Earth have been the cause of past global warming. The effect of changes in solar forcing in recent decades is uncertain but small with some studies showing a slight cooling effect while others studies suggest a slight warming effect. An increase in solar activity should warm the
References: Download date: 27th March, 2012 2 Web page address: http://environment.nationalgeographic.com/environment/global-warming/# Download date: 27th March, 2012 Download date: 28th March, 2012 4 Web page address: http://library.thinkquest.org/CR0215471/global_warming.htm Download date: 28th March, 2012 Download date: 29th March, 2012 6 Web page address: http://climate.nasa.gov/effects/ Download date: 30th March, 2012 Download date: 31st March, 2012 8 Web page address: http://thegreenerme.hubpages.com/hub/global-warming-causes Download date: 1st April, 2012 Download date: 1st April, 2012 10 Web page address: http://www.benefits-of-recycling.com/definitionforglobalwarming.html Download date: 2nd April, 2012 Download date: 3rd April, 2012 12