Global warming

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  • Publicado : 9 de mayo de 2011
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Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans. It’s a change that is believed to be permanently changing the Earth’s climate. The scientific consensus on climatic changes related to global warming is that the average temperature of the Earth has risen between 0.4 and 0.8 °C over the past 100years. The increased volumes of carbon dioxide and other greenhouse gases released by the burning of fossil fuels, land clearing, agriculture, and other human activities, are believed to be the primary sources of the global warming that has occurred over the past 50 years. Scientists from the Intergovernmental Panel on Climate carrying out global warming research have recently predicted thataverage global temperatures could increase between 1.4 and 5.8 °C by the year 2100. Changes resulting from global warming may include rising sea levels due to the melting of the polar ice caps, as well as an increase in occurrence and severity of storms and other severe weather events.
It’s produced when CO2 and other heat-trapping emissions are released into the air, they act like a blanket, holdingheat in our atmosphere and warming the planet. Overloading our atmosphere with carbon has far-reaching effects for people everywhere
There are direct manifestations of a widespread and long-term trend toward warmer global temperatures like:
-Heat waves and periods of unusually warm weather.
-Ocean warming, sea-level rise and coastal flooding.
-Glaciers melting.
-Arctic and Antarctic warming.While some would call global warming a theory, others would call it a proven set of facts. Opinions differ vehemently. Let us consider global warming to be both a premise that the environment of the world as we know it is slowly, but very surely increasing in overall air and water temperature, and a promise that if whatever is causing this trend is not interrupted or challenged life on earthwill dynamically be affected.
The prevailing counter opinion is that all that is presently perceived to be global warming is simply the result of a normal climactic swing in the direction of increased temperature. Many proponents of this global warming ideology have definitive social and financial interests in these claims.
Global warming and climate change are aspects of our environment thatcannot be easily or quickly discounted. Many factions still strongly feel that the changes our Earth is seeing are the result of a natural climatic adjustment. Regardless of one’s perspective the effects of global warming are  a quantifiable set of environmental results that are in addition to any normal changes in climate. That is why the effects of global warming have catastrophic potential. Globalwarming may well be the straw that breaks the camel’s back. It could turn out to be the difference between a category three hurricane and a category four. Global warming as caused by greenhouse gas emissions can lead us to a definite imbalance of nature.
The premise of global warming as an issue of debate is that industrial growth coupled with non-structured methods we as humans use to sustainourselves has created a situation where our planet is getting progressively hotter. We have seemingly negatively effected our environment by a cycle of harmful processes that now seem to be feeding upon themselves to exponentially increase the damage to our ecosystem.
Global warming has become perhaps the most complicated issue facing world leaders. On the one hand, warnings from the scientificcommunity are becoming louder, as an increasing body of science points to rising dangers from the ongoing buildup of human-related greenhouse gases — produced mainly by the burning of fossil fuels and forests. On the other, the technological, economic and political issues that have to be resolved before a concerted worldwide effort to reduce emissions can begin particularly in the face of a global...
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