Wednesday, December 11, 2019
Oceans In Danger Essay Example For Students
Oceans In Danger Essay Water takes up a larger percentage of the surface of our Earth than does land. The earths oceans are vital aspects to our environment and it is necessary that we take care of them. On another note, global warming is an issue that is having effects on almost all aspects of our environment. Global warming itself means a gradual increase in the temperature of our Earths atmosphere over large periods of time. There is evidence that global warming has occurred in the atmosphere, however, now we are beginning to see its effects in the worlds oceans, as well. Though some may not see the connection that it has with the oceans, it has had quite a profound effect on our Earths oceans. As I mentioned before, oceans are environments that must maintain each characteristic in order to survive. If one aspect of the ocean becomes altered, it leads to many consequences. Oceans are one of the most difficult areas to measure and take data from in our environment. However, we must first explore whether the oceans are actually being affected by global warming or not. Scientists have tried to use computerized models of our Earths oceans in order to make predictions on global warming effects. Teams of oceanographers have also been compiling ocean temperature readings from 1948 to 1996 in the Atlantic, Indian, and Pacific oceans. The study done by this team came to the conclusion that ocean temperatures below 300 meters have been raised a tenth of a degree Fahrenheit since the 1950s. Also, closer to the surface, ocean waters have increased in temperature by about 0.5 degrees (Pawelski, 2000). The principal author of this study and chief of National Oceanic and Atmospheric Administrations Ocean Climate Laboratory, Sydney Levitus, said, These temperature changes may seem small, but they represent very large changes in heat content of the ocean, and this heat will eventually find it its way back to the atmosphere. (Pawelski, 2000). Thus, although these temperature changes in the ocean se em small, they can have quite a large effect on our Earths atmosphere. Levitus also mentions that a large portion of global warming that seems to be absent in our atmosphere is actually in our oceans. We have found the missing warming in our oceans and now it is necessary that we try to reduce it (Kerr, 2000). From Levitus study alone and also from recent attempts to digitize ocean data, we realize that global warming actually does have quite an impact on our oceans. Now that we are aware that global warming is influencing our worlds oceans, we must look at the affects that it is having. I did not find any positive affects of global warming on the oceans. It is sad to say, but I was left with only the negative. One of the effects that warmer temperatures have on the oceans is that they disrupt the ocean circulation rate (Pearce, 1996). As I previously mentioned, oceans must maintain all of its characteristics properly. Warmer temperatures in the atmosphere affect circulation rates in the oceans. If circulation rates in the oceans are altered, then everything in the oceanic environment becomes changed. The oceanic currents become affected, as well. Global warming is also affecting the animals that live in our marine environments. These marine mammals are accustomed to living in specific temperatures. They cannot survive in the water if the temperature of the water changes dramatically. Thus, certain animals die as a result of the increase in temperature of the oceans. Also, it is very difficult to receive data from something as large and profound as our oceans. The various techniques that scientists use to receive data are not exactly quiet experiments. The tools used to take ocean data are actually loud machines that are put into the ocean. One might think that these loud machines would have no affect on animals because it is very difficult to hear things under water. However, some of us do not think about what animals hear under water. Their perception of sound under water is greatly different than ours. For example, bottlenose dolphins have been tested to have a hearing range of frequencies from 200 to 150,000 hertz. On the other hand, humans only hear between 20 to 20,000 hertz (Preston, 1997). Certain sea creatures actually use sound for navigation and communication throughout the oceans. The effect that global warming research has on these animals is that we are slowly destroying their capabilities to hear so well (Preston, 1997). The machines that we use may not affect us, however, they are affecting the auditory senses of animals under water. A Good Man Is Hard To Find EssayAs much as many people do not realize it, our oceans are extremely important components of our Earth and our environment. It is necessary that we take proper care of the oceans. Destroying the oceanic environment will only lead to further destruction of our own natural environment. It is important that we as humans living on Earth, stay aware of the issues that face our environment. Not only must we stay aware, we should try and become active in protecting the environment. I honestly did not realize the effect that global warming has on almost everything, especially the oceans. We must work together to try and prevent global warming and save the oceans and our environment. BibliographyLarry, R.G., R.H. Bourke, and A.S. McLaren. Could Arctic ice be thinning? Nature. 28 June 1990: Expanded Academic ASAP. 11 Mar. 2002. Begley, Sharon Daniel Glick. Was Andrew a Freak or a Preview of Things to Come? Newsweek. 7 Sept 1992: 30. Academic Search Elite. 11 Apr 2002. Held, Isaac M. The Partitioning of the Poleward Energy Transport between the TropicalOcean and Atmosphere. Journal of the Atmospheric Sciences. 2001: 58. Expanded Academic ASAP. 11 March 2002. Kerr, Richard A. Globes Missing Warming Found in the Ocean. Science. 24 Mar 2000: 2126. Academic Search Elite. 11 Apr 2002. Kullenberg, Gunnar. aGlobal Ocean Observing System.a Geotimes. Sept. 1992: 5. Expanded Academic ASAP. 11 Mar 2002. Lazaroff, Cat. aWarming Oceans Attributed to Greenhouse Gases.a Environment News Service. 11 Mar. 2002. ;http://ens.lycos.com/ens/apr2001/2001L-04-1606.html;. Pawelski, Natalie. aNew Study Finds Warming Trend in Oceans.a 23 Mar 2000. Cable News Network. 11 Mar 2002. ;http://www.cnn.com/2000/NATURE/03/23/warming.oceans/;Pearce, Fred. aWill a sea change turn up the heat?a NewScientist. 30 Nov 1996: 16. Expanded Academic ASAP. 11 Mar 2002. Preston, Todd. aThe unquiet oceans.a The Environmental Magazine. Mar/Apr 1997: 21. Academic Search Elite. 11 Apr. 2002. Rosendahl, B.R. aPumping up the ocean.a Sea Frontiers. Sept/Oct 1990: 3. Academic Search Elite. 11 Apr 2002. Spalding, Mark. Danger On the High Seas. Geographical. Feb. 2002: 15. Expanded Academic ASAP. 11 Mar 2002. Vogel, Shawna. Has Global Warming Begun? Earth. Dec 1995: 24. Academic Search Elite. 11 Apr 2002.