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Global warming

The temperature of our planet Is perfect for life. Not too cold, like Venus, not too hot and Mars. Thanks to these conditions we can live In this planet. The earth receives heat from the sun. Some gases in the atmosphere and prevent the hold of this heat from escaping back into space. Today this delicate equilibrium is in danger because of the pollution of the atmosphere which causes the gases to retain much heat near the surface. Temperatures around the globe have increased in the last century and this could cause global climate change.

The sea level rise and other changes in the environment pose a threat to all living beings. The term greenhouse effect refers to the phenomenon whereby the earth is kept warm and overall warming of the planet. In order to maintain optimum environmental conditions for life is essential to understand the complex relationships that exist between the earth and the atmosphere. Increasing the temperature of the earth due to the use of fossil fuels and other industrial processes that lead to an accumulation of greenhouse gases (carbon dioxide, methane, nitrous oxide and chlorofluorocarbons) in the atmosphere.

Since 1896 it is known that carbon dioxide helps prevent infrared rays from escaping into space, which keeps it relatively warm temperature of our planet (greenhouse effect). The question is whether rising carbon dioxide levels recorded over the last century lead to an increase in global temperature. The carbon dioxide content of the atmosphere has been Increasing each year as a result of the use of fossil fuels like oil, gas and coal, the destruction of tropical forests by slash and burn method also has been an Important factor that has Influenced the carbon cycle.

The concentration f other gases that contribute to global warming, such as methane and chlorofluorocarbons, are Increasing even faster. The net effect of these Increases could be a global temperature increase, estimated at 2-6 0 C over the next 100 years. Warming of this magnitude alter climate worldwide, affect crops and make the sea level rise significantly. Since 1 850 there has been an average increase in global temperature of about | 0 C, but this could be Just part of a natural fluctuation. Such fluctuations have occurred for tens of thousands of years, and occur in cycles short ND long term.

The difficulty of distinguishing the carbon dioxide emissions of anthropogenic from natural is one of the reasons why so much has been slow to legislate their control. However, the potential consequences of global warming are so threatening that many leading scientists have urged Immediate action and have sought International cooperation to combat the problem. Causes of Global Warming The climate on earth is very difficult to prevent, because there are many factors to global warming will bring. But apparently the climate change could be very severe.

The first very possible consequence is increasing drought: in some places will decrease the amount of rainfall. While in others, the rain increased is going to cause causing flooding. A warmer atmosphere could cause the ice near the poles melt. Resultant water quantity raise the sea level. An increase of only CACM could flood the fertile lands of Bangladesh, India. Also tropical storms may occur more frequently. Solutions In the ass, many people began to realize the changes that Earth was suffering. Studies show how fragile the environment is, and how much humans depend on it.

Gradually, we all realized that we should not continue polluting the water, land, and the air because it would not go away by itself. In addition, many human activities were affecting the climate in a very dangerous way. In 1992, the United Nations convened the First Convention on Climate Change. Since 1980, scientists and representatives of various countries had been meeting to determine how this change occurred and what could be done to stop it. The results were announced at the Earth Summit held in ROI De Jeanine, Brazil, in 1992. The agreement was signed by 154 Mounties.

What states the ROI agreement? The need to confrontation climate change by reducing greenhouse gas emissions. This means reducing the amount of fossil fuels used (oil, natural gas, coal), and protect forests (they catch and consume carbon dioxide). It also means reducing our energy consumption, and look for other energy sources that do not produce greenhouse gases (solar, wind, water or ocean waves). The Convention promotes the study and scientific research to discover new ways to end global warming. There is also the need to exchange technology between Mounties, promoting mutual aid.

It also recognizes that there are areas in the world that are very special and delicate (islands, mountains, rivers) and should be especially protected from the weather changes. Governments worldwide have reacted to this problem which is getting bigger. And we all know that these problems are impossible to solve if we do not realize the danger it bring us. In my opinion we have to act know. Climate changes are not a matter of years or decades. It is a concern that must be treated immediately, cannot tit until the damage is significant, because in that case it will be late to seek solutions.

We have to start acting from ourselves, in our daily lives, do our bit and build a better future. It’s not too late yet. Katharine Anderson. Predicting the Weather: Victorians and the Science of Meteorology, University of Chicago Press, 0226019683. Richard B. Alley. The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change and Our Future, Princeton University Press, 2005, 0691102961. Rand Berates. Climate Change and Naval War: A Scientific Assessment, Tradeoff Publishing, 2006, 141204846X.