Global warming Research Paper Example | Topics and Well Written Essays - 1500 words - 2

Global warming - Research Paper Example While considering meat’s entire lifecycle, a meat eater is said to contribute to 1.5 tons more greenhouse gases per year compared to a vegetarian. This fact has been revealed by a study conducted by the University of Chicago (Michael, 2009). By contrast, changing to a hybrid Toyota Prius from a Toyota Camry is expected to help humans get rid of one ton of greenhouse gases per year (Michael, 2009). Global meat production is increasing every year. This is found to be adding more global warming gases. Therefore it is said that one of the easiest ways to decrease the collective greenhouse gas emissions is to consume less meat. Similarly every human activity is blamed to be causing global warming. These findings appear to be amusing when we properly understand the nature of the process, global warming. Global warming is believed to be primarily caused by carbon dioxide emitted into atmosphere through the use of fossil fuels in vehicles. However we forget that natural water cycle is causing much more carbon-dioxide to come in and out of the atmosphere. Even though we cannot deny that human activities are contributing to warming of earth, it would be wrong to comment that global warming is completely human-made. Some of the causes of global warming are in the arctic region. The polar ice caps melt faster than they get evaporated. This process would be reversed in ten to twenty years. Human activities are causing less than three percent of greenhouse gas release into the atmosphere. Average world temperature is gradually increasing; this process is happening in the last one million years. This is long back the human activities started on earth. Global warming has been happening long back industries started emitting greenhouse gases into the atmosphere. We are of the belief that carbon dioxide released into the atmosphere today will negatively affect human beings several hundred years later. This is however not true. The lifespan of carbon dioxide is only 20 year s. After 20 years, the emitted carbon dioxide would completely disappear from atmosphere. Sun has little role in heating the atmosphere. The high frequency radiation of sun does not heat atmosphere. Hot bodies like sun cannot release low frequency radiation called infrared radiation. Rather, the heat from the sun heats the earth’s surface. This process reduces the radiation to infrared. Heat moves into the atmosphere by different processes like conduction, convection and evaporation. The infrared radiation gets absorbed by carbon dioxide. Instead, the sun’s rays heats the Earth’s surface, this weakens the radiation to infrared. From there it moves in to the earth’s atmosphere by any means necessary (Conduction, convection, evaporation). Then the inferred radiation is absorbed by the CO2. Almost 97 percent of the heat in the atmosphere is caused by evaporation or convection. Greenhouse gases are not responsible for this warming of atmosphere (Mintzer, 1992 ). The climatic changes of these ages are negligible compared to the climatic changes of the ancient periods (Mintzer, 1992) (Mike, 2006). Water evaporation is the chief cause of global warming. Water evaporation is causing global warming 100 times more than carbon dioxide emission (Mike, 2006). Human activities