Have you noticed that our summers have been extremely hot and our winters have been less extreme than in previous years? If so you are noticing what is referred to as global warming. What this refers to is an overall increase in the temperatures around the world. Due to human activities, such as pollution and the amount of gas we use, and through natural events, it had caused the average temperature across the world to rise substantially. In addition, the rise of use in gases like Carbon Dioxide that are referred to as “greenhouse” gases, may be a primary cause.
Global Warming refers to a raise in atmospheric temperatures and oceanic temperatures that are generally assumed to happen due to an increase in the greenhouse effect resulting especially from pollution (“What Is Global Warming?”). This endangers the life of our earth and the people, plants, and animals that are a part of it; being informed on how global warming is occurring and what each individual can do to save this planet are of much importance. It has become a risk to all of the Earth, including those who live on it. Because of many natural and manmade processes that adversely affect our surroundings, global warming has come into play. It is going to acquire a worldwide attempt, to delay global warming and make it a greater controllable circumstance. Humans have to start to doing their part in reducing their use of carbon dioxide, such as buying more fuel efficient cars, recycling, and making their homes greener.
National Geographic explains that “Glaciers are melting, sea levels are rising, cloud forests are drying, and wildlife is scrambling to keep pace It's becoming clear that humans have caused most of the past century's warming by releasing heat-trapping gases as we power our modern lives. Called greenhouse gases, their levels are higher now than in the last 650,000 years”.
According to Anup Shah, who has been studying global issues for years, the expression “greenhouse” is associated in combination with the occurrence known as the greenhouse effect. He explains the greenhouse effect in five steps:
“Energy from the sun drives the earth’s weather and climate, and heats the
earth’s surface; In turn, the earth radiates energy back into space; Some atmospheric
gases (water vapor, carbon dioxide, and other gases) trap some of the outgoing energy,
retaining heat somewhat like the glass panels of a greenhouse; These gases are
therefore known as greenhouse gases; The greenhouse effect is the rise in temperature
on Earth as certain gases in the atmosphere trap energy”. Although the greenhouse effect is natural and occur through the six main gases including carbon dioxide, nitrous oxide, three fluorinated industrial gases: hydrofluorocarbons, perfluorocarbons, and sulphur hexafluoride, and water vapor, many of these greenhouse gases make it possible for us to live. Without these gases, the average temperature of the earth would be a lot cooler because heat would leave earth and go into space. Nevertheless if this effect becomes more powerful, then more than needed warmth gets trapped, resulting in an uninhabitable Earth for humans, plants and animals (Shah).
It has been explored by National Geographic that scientists have identified the greenhouse effect in 1824, when Joseph Fourier premeditated that if our Earth did not have an atmosphere, the temperature would be colder. This greenhouse effect is what keeps the Earth's climate livable. Without it, the Earth's surface would be an average of about 60 degrees Fahrenheit cooler. Although greenhouse gases’ levels have gone up and down over the Earth's history, they have been fairly steady for the past few thousand years and it wasn’t until recently that the global average temperatures have fluctuated. Because humans are enhancing the greenhouse effect and causing the temperature of the heat to rise through the burning of fossil fuels and other GHG emissions, the result is...
References: "20 Deadliest Effects of Global Warming” Environmental Graffiti. 10 Aug. 2010. Web. 12 Oct. 12. .
Carey, John. "GLOBAL WARMING: Faster Than Expected?." Scientific American 307.5 (2012): 50-55. Academic Search Premier. Web. 12 Dec. 2012
“Global Warming Statistics”. Statistic Brain. 20 Oct. 2012. Web. 12 Dec. 2012
Shah, Anup. "Climate Change and Global Warming Introduction." Global Issues. 5 March 2012. Web. 12 Dec. 2012. .
“What Is Global Warming?” National Geographic. 1 Dec. 2012. Web. 12 Oct. 2012.
White, Deborah. “Global Warming Facts and Evidence”. Environmental Concerns. 30 June 2012. Web. 12 Dec. 2012.
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