Natural Causes Of Global Warming Essay

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Nowadays, global warming is a term that is widely used by everyone; however most people do not know what it means. Global warming is a phenomenon for which the average temperature of the earth’s atmosphere and the oceans is increasing because of the high concentration of carbon dioxide (CO2). The rise in CO2 in the earth atmosphere has been observed since the industrial revolution began and it is projected to continue rising. According to America's Climate Choices "The average temperature of the Earth’s surface increased by about 1.4 °F (0.8 °C) over the past 100 years, with about 1.0 °F (0.6 °C) of this warming occurring over just the past three decades" (2011). With that data we can figure out that the temperatures are increasing very…show more content…

For example, the United States Environmental Protection Agency (EPA) reported, in 2011, the quantity of greenhouse gas emission in the United States was 6,702 million metric tons of CO2 equivalent. This gas emission is associated with human activities. For instance: 33% comes from electricity production, 28% from transportation, 20% from industries, 11% from commercial and residential activities, and 8% from agriculture. However, only 14% of those emissions are offset by natural processes (EPA, 2013). It is clear that land use and forestry only assimilate a smaller amount of gas emissions compared with the quantity of them generated for anthropogenic activities. In contrast to this data, some skeptics have used the results of the scientific studies to show that greenhouse gas emissions is a regular process through the Earth’s history. One of those studies is the measurement of CO2 from ice cores. The Survey British Antarctic collected and reported the results from the ice cores collected in Antarctica and Greenland. The ice cores register the ages of the water from 800000 years ago until 2008, which is year that is considered as “zero”. The ice has air bubbles that contain the gasses of the atmosphere when the water was frozen; as a result, scientists get the information from them and calculate the temperature patrons about the past. The following

The Natural Causes of Global Warming Essay

761 Words4 Pages

For the past 100 years scientists have been warning people of climate change. The general opinion has flip-flopped about three times, from cooling to warming to cooling, and back to warming again. The fact is that earth's climate is constantly changing. It has periods of cooling and periods of warming. However, studies have shown that short-term temperature change cannot be used as a gauge for future predictions. The fact that the earth has experienced warming throughout the last century is not proof that the industrialization of humans was the cause. If we want to even try to predict what the climate will do in the future, we must look back over a longer time interval. The recent global warming is not a result of human activity,…show more content…

Within the last 1,000 years the earth has been through much warmer temperatures than what we are dealing with today. A report from the National Academy of Sciences affirmed the existence of a Medieval Warm Period from about 900 A.D. to 1300 A.D. During this period, the temperature rose by more than 1° F to an average of 60° or 61° F, as much as 2° F warmer than today. Within the last 150 years the earth has experienced a period of irregularly cool temperatures. The same National Academy of Sciences report that affirmed the existence of the Medieval Warm Period also affirmed the reality of what is known as the Little Ice Age. During the Little Ice Age, which lasted from about 1500 to 1850, global temperatures plummeted. In the summer of 1816, temperatures were recorded in Connecticut to be 2.5 degrees Celsius colder than the average of 1780 to 1968. Temperature differences such as these appeared around the world. This was a period when the average life expectancy for the Vikings in Greenland was 10 years because of the harsh conditions and lack of crops. People in Europe commonly held festivals on frozen lakes because the ice was thick enough to hold. After the Little Ice Age, global temperatures began to rise dramatically. Since 1850, temperatures have increased by 1.5 degrees Fahrenheit, much of which is contributed to a surmised “rebound” from this extremely cool period. The United Nation's Intergovernmental Panel

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