debate on global warming

In recent years, debate on global warming has been marred with controversies in relation to its nature, causes, existences and its consequences on the environment. Sections of people have come up with different perspectives in trying to understand what global warming is all about. Global warming according to Weart occurs when the earth and ocean heats up leading to the rise in temperatures 9(41). This happens when greenhouse gases such as carbon dioxide, water vapor, methane and nitrous oxide trap heat and light coming from the sun in the atmosphere, which leads to increase in the temperatures. The heat causes adverse effects to people, plants and animals on the earth leading to death.
The debate on whether global warming exists has been centered on such issues as the causes of this situation and its consequences. In various scientific literatures, there is strong believe or consensus that indeed global surface temperatures have increased in the past decades. Many claim that there are many aspects thought to be behind the increased temperatures in the global surfaces brought by global warming. The increase is contributed by the increase in birth rate that exerts pressure on the earth’s surface through their actions such as green house gas emissions. Therefore, it is no doubt that global warming exists and it is here with us.
According to Kump, the green house gas emissions in the atmospheres have contributed to the global warming (56). The breakup of Pangaea may have been aggravated by the high amount of heat that led to the break of the crust. Some of these, heat may have contributed to the emissions of gases such as carbon dioxides which are now manifesting themselves in terms in temperatures increases. Although, this is not taken to be the sole cause of the breakup of the crust as other forces may have contributed in the break of the crusts.
Another reason in support for the existence of global warming is rooted in the intense warming of the volcano, which resulted to production of gases, and setting them in motion. The warming of the oceans hydrates the frozen methane deposited in the ocean surface, causing it to bubble up the surface. This increases carbon dioxide gases in the atmosphere hence amplifying the concentration of gases in the atmosphere increasing the impacts of green house effects. This assertion is true as methane has high propensity of trapping heat in the atmosphere and converting it to carbon dioxide (Eisenman, Schneider, Battisti, David, & Bitz 5325). Therefore, it is true that such occurrences have contributed to the global warming resulting to increase in atmospheric temperatures.
The burning of materials contributed to the global warming as they emit green gases in the atmosphere. The droughts that existed many years in Western Europe and western US and wildfires that burnt forests released a lot of carbon dioxide in the atmosphere which to some extend are contributing to the global warming. Furthermore, the oil /coal seams and the smoldering peats that have also existed for a considerable long period have also contributed or continued to keep the discharged going strong.
According to Weart, the scientist communities have failed to mount public relations campaign to support their stances on the existence of global warming (42). This has led to loss of trust among the public and it requires a lot of efforts for the scientists to restore the lost trust that indeed that global warming exists. The conversations on global warming began in 1896 after a physics chemist estimated that there was a likelihood of global temperatures to rise several degrees in case carbon dioxide leveled on the atmosphere was doubled (Weart 45). This has sparked a lot of debate in the society with scientists and media house presenting diverse views on the issues.
In 1956, aphysicist by the name Gilbert N. Plass employing improved spectroscopic theories and data with electronic calculator postulated that addition of another carbohydrate layer on the upper layer of the atmosphere would hinder any heat radiation from leaving the planet hence increasing the amount of heat in the atmosphere (Weart 43). However, he did not say anything on whether clouds would change and reflect more sunlight. Furthermore, to affirm the likelihood of existence of global warming, in 1960 Keeling announced that the level of carbon dioxide was indeed rising and this was a concern and the existence of global warming was not to be dismissed as being fallacious (Weart 43). To demonstrate the effects of human actions, the Keeling curve that was used to measure carbon dioxide level continued to climb year after year in the next decade demonstrating the effects that temperatures were increasing.
In 1970s, the area received a lot of attention with computer models being used to measure the correlation between carbon dioxide and global warming. This attention was drawn after the rate of drought increased. The increased pollution and human actions that lead to emission of green gases in the atmospheres were claimed to deter penetration of sunlight rays hence increasing the rate of heat. On the contrary, many meteorologists stil believed in the balance of nature as one of their member pointed out those human actions had a long way to go before their effects could be felt in the contribution to the global warming.
With these diverse opinions, in 1979, President Jimmy Carter science advisor requested the academy of sciences to report on the issue of global warming with the use of computer modeling. This academy found out that all the models that were used warmed to some extend with the doubling of the carbon dioxide levels. They further, asserted that despite trying to find for mechanism to enable them stop the warming, it was not possible. Hence, it is apparent that indeed there is existence of global warming, especially contributed by human actions as green gases contribute to the heating of the atmosphere.
In 1985, a big conference of experts in Villach, Australia affirmed that indeed global warming was a severe problem that required urgent government involvement through laying of policies that could assist in restricting further emissions from the greenhouse gases (Weart, 43)
In 1988 major international scientist conference that met in Toronto concluded, that there was were inherent risk as a result of anthropogenic climate change. These changes posed great risk to the security of many people. For instance, the sea level could rise leading to displacements of millions of refugees, heat waves would cause devastating effects on agriculture leading to famine. This damage would provoke deadly conflicts. Likewise, the report called upon governments to put in place salient polices to ensure that there was rapid reduction of green house gases emission in the atmosphere. In a poll that was taken during this period , half of the adult Americans said that they had heard about the greenhouse effects as most of them believed that they could live to see the effects of global warming (Weart 45). In other polls, majority of respondent felt that the greenhouse effects were very serious, or extremely serious while less than one-fifth said that they did not worry at all about global warming. Therefore, by the end of 1989, the scientific community had formed a rough consensus in the public as they knew and understood what global warming was.

 

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