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History of climate change essay
History of climate change essay
The effects of carbon dioxide on the environment
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There is no doubt that climate change is happening, and it is happening fast. The average surface temperature of the planet has risen about 2.0 degrees Fahrenheit since the late 19th century. This is due by an increase in human-made emissions like carbon dioxide, which are thrown into the atmosphere. The past thirty-five years have been crucial for the planet since they were the warmest years on record. Not only has the planet witnessed a global temperature rise, but the oceans have absorbed much of the increased heat, global sea level rose about eight inches only in the last century, and the Antarctic and Greenland ice sheets have decreased in mass. As the data collected by the The NASA’s Gravity Recovery and Climate Experiment show, “Greenland …show more content…
Climate activists and scientists have dedicated time into researching techniques for geoengineering such as “reflecting sunlight from space, adding vast quantities of lime or iron filings to the oceans, pumping deep cold nutrient-rich waters to the surface of oceans and irrigating vast areas of the north African and Australian deserts to grow millions of trees” (Vidal). The techniques did show that there would be a potential temperature drop of approximately eight …show more content…
It is public knowledge that it has been around for many years now. According to Eli Kintisch, since the 1960s scientists knew that the carbon emissions that humanity is currently emitting will be around for numerous thousands of years, even if it is a go for geoengineering. This kind of mindset let civilization to think that scientists could lead the way and help disappear climate change, but this is where environmentalists stand out. As the ecologist and entrepreneur Stewart Brand said, “greens are no longer strictly the defenders of natural systems against the incursions of civilization; now they’re the defenders of civilization” (Kintisch, 233). So now it is not only up to scientists to protect humanity, but it is environmentalists jobs too, which is why it is valid for them to question if geoengineering is a viable and safe
People are responsible for higher carbon dioxide atmosphere emissions, while the Earth is now into the Little Ice Age, or just behind it. These factors together cause many years discussions of the main sources of climate changes and the temperature increasing as a result of human been or natural changes and its consequences; even if its lead to the global warming, or to the Earth’s cooling. In their articles, “Global Warming Is Eroding Glacial Ice” by Andrew C. Revkin and “Global Warming Is Not a Threat to Polar Ice” by Philip Stott, both authors discuss these two theories (Revkin 340; Stott 344). Revkin is right that global warming is taking place. Significant increase of carbon dioxide in the atmosphere is due to human activities combined with natural factors such as volcanic emissions and solar radiation – all together they lead to climate changes and temperatures rising. At the same time, other factors such as deforestation contribute to environmental changes for some glaciers not less than air pollution. However, during global warming not all regions of the planet are affected in the same way, local warming and cooling are both possible during these changes.
Thesis Statement: Due to the limitations of global climate models used as predictors for future calamitous climate changes and the lack of fact-based knowledge regarding the climate, we should avoid geoengineering because of the unknown and possibly devastating consequences.
Climate change is on the international policy agenda primarily because of warnings from scientists. Their forecasts of a potentially dangerous increase in the average global temperature, fortuitously assisted by unusual weather events, have prompted governments to enter into perhaps the most complicated and most significant set of negotiations ever attempted. Key questions - the rapidity of global climate change, its effects on the natural systems on which humans depend, and the options available to lessen or adapt to such change - have energized the scientific and related communities in analyses that are deeply dependent on scientific evidence and research.
Global temperatures have noticeably been rising since the mid 1800’s.The average temperature has increased by 0.6 ± 0.2°C since 1860 according to (John Sweeney, 2003)with accelerated warming apparent in the latter decades of the 20th century. The legitimacy of global warming had long been debated, however in a report by (IPCC, 2007) it states that warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice and rising global average sea level. Simulations on models such as EC-Earth provide us with predictions for future climate change. Depending on levels of emissions an increase of 1 to 5.5 degrees celsius is expected in average global temperatures by 2100.
Does one ever think of the potential catastrophic harm they’re causing by turning on the lights or by using their cars? Don’t we want a world where our grandchildren and great grandchildren can live safety and comfortably? At the rate were going this will not be possible; we’ve added more than 1.4 trillion tones of Carbon Dioxide (CO2) in just two hundred years, and its messing up our planet (Siegel 1).
How would you like to live in a home that is beginning to fall apart, but only to go on about your day and continue to neglect it until it all comes crashing down? Humans and animals share this beautiful planet that we call home. But this beautiful home of ours is being regularly and increasingly torn apart by our own ignorant actions. These actions of ours have begun to unravel the very world in which we live, causing a self-inflicted crisis known as Global Climate Change. Global Climate Change is a severe dilemma, and it is continuously becoming more evident to the world’s population that climate change is being caused by changes in the reflectivity of earth’s atmosphere and surface, the ever changing variations of energy from the sun reaching the earth, and the daunting increase in greenhouse gasses.
One of the most compelling and difficult environmental problems society faces today is climate change. People do not realize how much the environment has changed for the worse in the last ten years, until they are told that the last two decades of the 20th century have been the hottest in the last 400 years, according to climate studies (Conserve Energy Future). Today, the carbon dioxide levels have reached 396.81 parts per million (ppm). “Carbon dioxide (CO2) has also increased over the last 100 years-- from about 300 ppm to 370 ppm. Interestingly, the majority of these additions have occurred in the last 50 years, when temperature increases have been the slowest” (geocraft).
Furthermore, this analysis must take place amidst serious gaps in the existing research and technology concerning the developing climatic conditions. For these reasons, global warming stands as one of the most daunting policy issues facing our world today. This is compounded by the debate over the very existence of climate change. While countless sources of empirical evidence testify to the very real presence of climate change the world over, considerable denial of the phenomenon still exists. The argument has been made that evidence of climate change is a gross overstatement, or in some cases, a complete fabrication.
Our world is always changing, so is our climate. Some changes are apparent, others not so much. Climate change is an important issue of concern in the twenty-first century. Environment, if it changes at all, evolves so slowly that the difference cannot be seen in a human lifetime (Wearth, 2014). Mostly all scientists predicted that it would take thousands of years for the planet to warm up due to emissions of carbon dioxide from fossil fuels called greenhouse gases. But in the past 200 years, things began to change. The rate and the amount of warming that is happening on this planet are unprecedented. Wearth says, “People did not grasp the prodigious fact that both population and industrialization were exploding in a pattern of exponential
There is no longer any question that our world climate has changed (King, 2004). Over the last 100 years, "temperatures have risen by about 0.6 degrees Celsius and global sea level has risen by about 20cm" (K...
Climate change is a fact. Humans are causing it, and it is perhaps the most serious issue that humankind is facing today. Starting from the Industrial Revolution the amount of carbon dioxide in the air is increasing constantly. Consequently, the continuous increase in earth’s temperature is a clear indicator of how carbon dioxide effects the earth. One of the major problem that global warming is causing is the melting of sea ice in the arctic. Due to the melting of the sea ice, global temperature suffers. In order to stop the global climate change, the congressional committee on environment must pass a legislation to regulate the use of fossil fuels, because climate change in the arctic is causing all the ice to melt, the permafrost to thaw, and it has huge impact on the vegetation and the wildlife.
It is an unquestioned fact that the climate is changing. There is abundant evidence that the world is becoming warmer and warmer. The temperature of the global land average temperature has increased by about 8.5 degrees centigrade from 1880 to 2012 (Karr, et al 406). The one or two degrees increase in temperature can cause dramatic and serious consequences to the earth as well as humans. More extreme weather occurs, such as heat waves and droughts. The Arctic Region is especially sensitive to global climate change. According to the data in recent decades, the temperature in the Arctic has increased by more than 2 degrees centigrade in the recent half century (Przybylak 316). Climate change has led to a series of environmental and ecological negative
Global heating and cooling has occurred on a cycle for millennia, however in the past thirty years the increased use of energy and fuels by humans has drastically changed this natural occurrence (Juerg, 2007). The largest cause of this warming is the release of carbon dioxide from the burning of fossil fuels. Carbon dioxide levels are twenty-five percent higher than they were in 1957 (UCS, 2013). This seemingly insignificant change has caused a myriad of negative effects. The endangerment of species, rising of sea levels, and increased natural disasters are just a few examples of change brought about by global warming (Juerg, 2007). Even though global climate change presents a massive problem there are many proposed solutions to fix or delay it. These theories range from creating a giant sun shield in space to the simple practice of “reduce, reuse, and recycle” (Gray, 2009). However the most effective solution is to find different sources of fuel to power our day to day lives. The earth is in need of renewable, effective, and long lasting fuels. Global warming can be slowed through the use of renewable energy as it is versatile, clean, a good investment, and can easily be put into place in several different climates and environments.
Solomon, S. (Ed.). (2007). Climate change 2007-the physical science basis: Working group I contribution to the fourth assessment report of the IPCC (Vol. 4, pg 501). Cambridge University Press.
There is no doubt that global warming will not stop anytime soon as carbon has a life of around 100 years and more potent greenhouse gases have even longer lifespan. To counter this is the idea of climate engineering. Climate engineering can be as common sense as planting forests, changes in land use to reflective satellites. The idea of climate engineering is controversial as one of the articles in this paper describes it as “hubris” that we can predict and change the global climate to our liking (Meyer, Uhle, 2015).