The Ozone Layer And Global Climate Change

Global warming is one of the most tumultuous topics in today’s society. Some believe it is happening as we speak, while others question its very existence, So, is it real, or is merely a hoax? There is no one answer, but evidence does overwhelmingly support the former. Surely we have all heard this word at one time or another, but few individuals actually know its true definition. Justifiably, however, global warming is not that simply explained. In layman’s terms, it is the dramatic increase in the Earth’s average air and ocean temperature since the 20th century. This increase is primarily attributed to two main culprits: the greenhouse effect and human activity, such as fossil fuel burning. In both cases, carbon dioxide (CO2) is the

The Global Warming theory has become increasingly popular over the past few years. Citizens of the world are being encouraged to be more environmentally conscious by others including politicians, celebrities, and world organizations. The problem with the theory lies in the fact that it has become more and more controversial as it gains publicity and attention. The basic concept behind this theory is that the earth was made with a balance of “greenhouse gasses”. These gasses are naturally occurring within the atmosphere and they essentially make the planet habitable by keeping it warm.

In order to understand the issue of global warming (also referred to as climate change), you must first understand what it means and how it happens. Global warming is a result of a process known as the greenhouse effect, in which the light and heat from the sun are trapped in the Earth’s atmosphere by greenhouse gases; which subsequently raises the average temperature on Earth. The greenhouse gases responsible for this process are carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, and tropospheric ozone, all of which are released into the atmosphere through naturally occurring processes (Warrick, R. & Farmer, G., 1990).

Did you know that with all this talk about global warming, and the disappearing of the ozone layer, the root of the problem is us? Yes, we’re the cause of all those problems. We keep putting something called greenhouse gases into the air. A few greenhouse gases are water vapor, carbon dioxide, and methane. While some climate change is natural, humans need to be careful about greenhouse gases because ecosystems are changing, sea levels are rising, and global average temperature increased by more than 1.3 degrees Fahrenheit over the last century.

Damon Matthews, a professor in Concordia University’s Department of Geography, found a direct connection between carbon dioxide and global warming. Matthew’s studies show that same global temperature increase, regardless of when or over what period of time the emission occurs. The effect of adding more carbon dioxide is predicted in the theory of greenhouse gases. Swedish scientist, Syante Arrhenius, first proposed the theory in 1896, based on earlier work by Fourier and Tyndall. At the same time, many scientists have reached the same conclusion. If we increase the amount of greenhouse gases in the atmosphere, the Earth’s temperature will increase. Energy is absorbed from the sun in the form of visible light and ultraviolet radiation. The earth then releases some of this energy as infrared radiation. Greenhouse gases in the atmosphere captures some of this heat, then re-emit it in all directions. During this process, carbon dioxide and other greenhouse gases keep the Earth’s surface 33 degree Celsius warmer than it would be without them. According to an ongoing temperature analysis conducted by a scientist at NASA’s Goddard Institute for Space Studies (GISS), the average global temperature on Earth has increased by about 0.8 degree Celsius. Since 1975, two-thirds of the warming has occurred at a rate of roughly 0.15-0.20 degree Celsius per decade.

The ozone layer is in the Earth’s stratosphere and the necessity of this layer is to protect the Earth from the sun’s harmful ultraviolet radiation rays. “Since the late 1970s, an ozone hole has formed over Antarctica each austral spring (September / October), in which up to 66 percent of the total ozone is depleted” (Ozone Layer Protection). What directly causes holes in ozone are Chloroflourocarbons (CFCs), which rapidly damage the ozone layer. However, with the rising global warming temperature the CFCs’ process is catalysed, further damaging the ozone layer. “According to the estimates made by Dasgupta and Bhaumik (1995), it is likely that 10% decrease in ozone will lead to 20% increase in UV irradiance” (Gangul and Iyer 2006). Once an uncontrolled amount of UV radiation is exposed to lifeforms, especially to humans, “According to the estimates made by Vander Leun and De Gruijl (1993), 1% decrease in total stratospheric columnar ozone (SCO) will lead to 2.3% increase in non-melanoma skin cancer, 2% increase in cutaneous melanoma and 0.5% increase in the incidence of cataracts” (Gangul and Iyer 2006). More devastating effects from the depleting ozone layer are more destruction to agricultural fields, warming of oceans and increased acidity which is diminishing the amounts of phytoplankton, which can immensely affect the stability of the food chain. Therefore, the depletion of

In 1988, the National Aeronautics and Space Administration had conclusive proof products adding to the output of carbon dioxide and methane gases in the atmosphere were causing the earth to warm; and, if not stopped will make it inhabitable for human life. In the 1970’s the United States had conclusive proof that products releasing Chlorofluorocarbons into the atmosphere were causing the ozone layer to deplete; and, that if continued would be dangerous for human life. The United States took international global action, by joining the Montreal Protocol, to phase out the products producing chlorofluorocarbon and the ozone layer has been successfully replenished .

Global warming is the rising of temperatures on the surface of the earth due to the trapping of heat rising from the earth’s surface. It is caused by the destruction of the Ozone layer by the carbon dioxide emitted mostly from the burning of the fossil fuel and the deforestation. The ozone layer is a layer of oxygen in the atmosphere responsible for absorbing the heat from the earth’s surface.

Phrases such as “climate change” and “global warming” are often thrown around on the news and in politics; however their meaning and significance was never clear to me. I enjoyed my reading of the Susan Solomon interview because, it was very informative and easy to understand. Solomon’s outstanding achievements as a female scientist are inspiring and remarkable. Her groundbreaking studies in Antarctica concerning the ozone hole, prove to us how important it is to take care of our planet. Human produced substances known as CFCs (chlorofluorocarbons) have damaged our ozone beyond repair. It is hard to believe that humans can be so careless as to destroy their own Earth. Thankfully, “the nations of the world agreed to stop producing CFCs” in 1987.

Humans are pouring carbon dioxide into the atmosphere at a much faster rate than the rate at which plants and oceans can absorb it. Global warming is the increase in the overall temperature of the Earth 's atmosphere; global warming is a delicate topic because it is happening right now no one can stop it from happening. It is already transforming life on Earth, shifting the seasons, raising the temperature and rising the sea level. Other effects of global warming include stronger storms, extinction of species, rapid disappearance of Artic ice, and the increase of the ozone hole. It became an issue in 1988 when a scientist from NASA found that "Global warming has reached a level such that we can ascribe with a high degree of confidence a cause and effect relationship between the greenhouse effect and observed warming" (Hansen). James E. Hansen testimony was a big thing that everyone start to worry about it and everyone was talking about global warming because the media contribute to it. Global warming is a big thing happening right now but we don’t listen to others and we continue with our life’s without looking around us and without helping to stop the cause of it because as a humans we make errors during life but we learn from the errors and the bad choices. Although some people believe mankind is not responsible for global warming, it is a serious problem worldwide and measures are need to help slow the problem.

Global warming, or what is now called climate change, is caused by the sunlight coming through the Earth’s atmosphere, containing greenhouse gasses, and becoming cemented between the Earth’s crust and Ozone layer. This causes an uncontrollable heating in the territory between them (“Global Warming Science”). “Even though these greenhouse gases hold the heat from the sun the greenhouse effect is what keeps the Earth’s temperature suitable for life. Without the greenhouse effect Earth would be frozen and no one would be able to live on it” (“Global Warming- Britannica”). Many people believe that climate change is a myth and that it is not true due to the consequences are too harsh for a normal person to think of, the

"Scientists agree that the main reason for global warming is the depletion of the ozone layer

Scientists who believe in global warming say that global warming is the result of carbon dioxide and other air pollutants collecting in the atmosphere like a thickening blanket, trapping the sun’s heat which causes the earth to heat up. In fact, according to Amber Jenkins, site editor for "Global Warming: Vital Signs of the Planet," meteorologists at NASA (National Aeronautics & Space Administration) have reported that “Earth is the hottest it has been in at least 400 years, and possibly even the last 2,000 years. Studies indicate that the average global temperature has increased by approximately 0.5-1.0°F (0.3-0.6°C) over the last century” (Jenkins).

Global warming has become a world wide issue and an issue that is causing great controversy. It is an increase in the earth's atmospheric and oceanic temperatures widely predicted to occur due to an increase in the greenhouse effect resulting especially from pollution (Dictionary). Global warming is a natural process, but because of increase in certain activities this process is taking a faster and more dangerous route creating global problems. Global warming was first theorized in 1894 by Jean Baptiste Joseph Fourier a French mathematician, who noticed the earth was gradually increasing in temperature. He came to the conclusion that the earth’s atmosphere was trapping solar radiation caused by the sun and reflecting this radiation back to

The issue of global warming should be on the list of our top priorities. Studies show that the average of global temperatures have risen since the Industrial Revolution began. Since the Industrial Revolution, human emissions has quadrupled the frequency of certain heat extremes and many scientists have warned that a failure to bring greenhouse gases under control could eventually lead to a 62-fold increase in extreme heat blasts (Gillis Justin A17). Most of the increase is due to human activities, especially the burning of fossil fuels and deforestation. These activities contribute to a build-up in carbon dioxide and other gases in Earth’s atmosphere. The Earth’s atmosphere is made of gases like nitrogen, carbon dioxide and oxygen. These gases act as a blanket that covers and gives us warmth, but once these gases such as carbon dioxide absorbs heat, but does not release it back into space in which causes the increase in global temperature. This is called the greenhouse effect because it only traps heat but does not release it.