Global warming has turned out to be an international concern. This is quite evident if the climatic changes in the past few years are considered. Scientists all over the world are making predictions about the ill effects of Global warming and connecting some of the events that have taken place in the past few decades as an alarm of global warming. More or less all specialists studying the climate record of the earth have the same opinion now that human actions, mainly the discharge of green house gases from smokestacks, vehicles, and burning forests, are perhaps the leading power driving the fashion.

The major cause of global warming is the emission of green house gases like carbon dioxide, methane, nitrous oxide into the atmosphere. The major source of carbon dioxide is the power plants. These power plants emit large amounts of carbon dioxide produced from burning of fossil fuels for the purpose of electricity generation. About twenty percent of carbon dioxide emitted in the atmosphere comes from burning of gasoline in the engines of the vehicles.

Recently, a few weeks after the massive floods in Brisbane, a study was carried out by the Canadian climate sleuths have indicates the intensity of heavy precipitation is due to the burning of fossil fuels and other human related activities. The study in Nature journal examined data from across the northern hemisphere found that the intensity of extreme rainfall and snow had gone up in recent years. Human beings may be partially to blame for the increasing intensity of rain and snowstorms.

According to researchers, the greenhouse gases generated by human activity have intensified heavy precipitation events since 1950 across much of North America, Europe and Asia, increasing flooding and devastation. It has been long that greenhouse gases are suspected playing a role in the increasing intensity of storms and floods, but scientists have had trouble pinning it down. The gases append to the planet’s normal greenhouse effect, permitting sunlight in, but stopping some of the ensuing heat from radiating back to space.

Based on the study on past climate shifts, notes of current situations, and computer simulations, many climate scientists say that due to the lack of big curbs in greenhouse gas discharges, the 21st century might see temperatures rise of about 3 to 8 degrees, climate patterns piercingly shift, ice sheets contract and seas rise several feet. The main tools for projecting future climate changes are mathematical models based on physical principles including fluid dynamics, thermodynamics and transfer. The scientists have compared the actual observations with predictions in various climate models. It was found that natural variability alone could not account for the intensity of storms. The increased intensity of green house gases shows that the global warming effects are kicking in.

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