Digital dissertations

GreenHouse Gas, GHGs — causes of global warming are emitted in various ways apart from the combustion of fossil fuels in car. Evidently, carbon dioxide is the highest cause of global warming among other greenhouse gases which also include methane, nitrous oxide, and some other artificial gases.

In particular, this has been on the increase as a result of industrialization and commercialization. Obviously, the activities of a man with regards to contributing to global warming are overwhelming and substantial. But they are also caused by natural influences such as solar and volcanic activities.

The importance of mitigating the effects of global warming therefore cannot be overemphasized. The consequence of not doing this could be very devastating. While the majority of the world leaders agree with the fact that global warming is indeed a global challenge.

Essay on Global Warming is Causing Climate Change - Words | Bartleby

You may order a persuasive essay on this topic in a couple of clicks — Handmade Writing is a top-notch essay writing service. The United Nations has been spearheading moves towards tackling the menace of climate change. The Copenhagen Conference on climate change further raised the awareness to a high level and the desire to tackle the menace. But what the conference achieved which is seen as a bold step towards ending the menace of global warming was the resolution of developed countries to reduce greenhouse gas emissions.

All this while adapting to the effects and providing finance for doing this. The conference also agreed on a long-term plan of keeping the temperature below 2 degrees Celsius. Whether these resolutions will be adhered to remains to be seen.

Persuasive Essay Sample: Global Warming

However, there are things we can do as individuals to reduce the rate of emission of greenhouse gases and the effects of climate change. Indeed, attitudinal change is the key to achieving this and being more environmentally friendly. Specifically, practical steps include the use of recyclable products and buying goods with minimal packaging.

Eventually, this action will reduce waste once the world recovers by energy-efficient products, less energy use, heat abd air leakages prevention.

Global Warming For Kids - Effects Explained

Besides, driving less and walking or riding to school and work, are also optimal actions for effective preservation of the planet. That not only reduces the emission of carbon-dioxide but also keeps you physically fit. Also, to further reduce the emission of greenhouse gases, one can plant trees. That is a very effective way of cutting down carbon-dioxide, since during photosynthesis, they trees use-up carbon-dioxide and give out oxygen. They will occur more often: The average number of heat waves in the Chicago area increases in the coming century by 25 percent, from "Heat Waves of the 21st Century: More Intense, More Frequent and Longer Lasting.

In Paris, the average number increases 31percent, from 1. They will last longer: Chicago's present heat waves last from 5. In Paris, present-day heat waves persist from 8. Source: National Science Foundation.

Adam Morris. Ms. Scannell. English Iii. March 3, 2017.

Based on tide gauge data, the rate of global mean sea level rise during the 20th century is in the range 1. The causes for change of the sea level : At the shoreline it is determined by many factors in the global environment that operate on a great range of time-scales, from hours tidal to millions of years ocean basin changes due to tectonics and sedimentation. On the time-scale of decades to centuries, some of the largest influences on the average levels of the sea are linked to climate and climate change processes.


  • 1. Introduction.
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Firstly, as ocean water warms, it expands. On the basis of observations of ocean temperatures and model results, thermal expansion is believed to be one of the major contributors to historical sea level changes. Further, thermal expansion is expected to contribute the largest component to sea level rise over the next hundred years. Deep ocean temperatures change only slowly; therefore, thermal expansion would continue for many centuries even if the atmospheric concentrations of greenhouse gases were to stabilise.

The amount of warming and the depth of water affected vary with location. In addition, warmer water expands more than colder water for a given change in temperature. The geographical distribution of sea level change results from the geographical variation of thermal expansion, changes in salinity, winds, and ocean circulation. The range of regional variation is substantial compared with the global average sea level rise. Rise in sea Level: Sea level also changes when the mass of water in the ocean increases or decreases. This occurs when ocean water is exchanged with the water stored on land.

The major land store is the water frozen in glaciers or ice sheets. Indeed, the main reason for the lower sea level during the last glacial period was the amount of water stored in the large extension of the ice sheets on the continents of the Northern Hemisphere. After thermal expansion, the melting of mountain glaciers and ice caps is expected to make the largest contribution to the rise of sea level over the next hundred years. These glaciers and ice caps make up only a few per cent of the world's land-ice area, but they are more sensitive to climate change than the larger ice sheets in Greenland and Antarctica, because the ice sheets are in colder climates with low precipitation and low melting rates.

Consequently, the large ice sheets are expected to make only a small net contribution to sea level change in the coming decades. A new study says the seas are acidifying ten times faster today than 55 million years ago when a mass extinction of marine species occurred. And, the study concludes, current changes in ocean chemistry due to the burning of fossil fuels may portend a new wave of die-offs. In other words, the vast clouds of shelled creatures in the deep oceans had virtually disappeared.

The seawater became so corrosive that it ate away at the shells, along with other species with calcium carbonate in their bodies.

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It took hundreds of thousands of years for the oceans to recover from this crisis, and for the sea floor to turn from red back to white. By spewing carbon dioxide into the air, we are now once again making the oceans more acidic. Approximately one millennium after the 7 Ka 32 nd Century BCE slowing of sea-level rise, many coastal urban centers rose to prominence around the world Day, John W. It has been hypothesized that this is correlated with the development of stable coastal environments and ecosystems and an increase in marine productivity also related to an increase in temperatures , which would provide a food source for hierarchical urban societies.

The last written records of the Norse Greenlanders are from a marriage in the church of Hvalsey — today the best-preserved of the Norse ruins. Climate change has been associated with the historical collapse of civilizations, cities and dynasties.

Study of Impacts of Global Warming on Climate Change: Rise in Sea Level and Disaster Frequency

Notable examples of this include the Anasazi Demenocal, P. Other, smaller communities such as the Viking settlement of Greenland transl. There are two proposed methods of Classic Maya collapse: environmental and non-environmental. The environmental approach uses paleoclimatic evidence to show that movements in the intertropical convergence zone likely caused severe, extended droughts during a few time periods at the end of the archaeological record for the classic Maya Haug, Gh, et al. The non-environmental approach suggests that the collapse could be due to increasing class tensions associated with the building of monumental architecture and the corresponding decline of agriculture Hosler D, et al.

The Harappa and Indus civilizations were affected by drought 4,—3, years ago. Notable periods of climate change in recorded history include the medieval warm period and the little ice age. In the case of the Norse, the medieval warm period was associated with the Norse age of exploration and arctic colonization, and the later colder periods led to the decline of those colonies Patterson, W.


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Climate change in the recent past may be detected by corresponding changes in settlement and agricultural patterns. Archaeological evidence, oral history and historical documents can offer insights into past changes in the climate. Climate change effects have been linked to the collapse of various civilizations. The instrumental temperature record shows global warming of around 0. The future level of global warming is uncertain, but a wide range of estimates projections have been made Fisher, BS et al.

Climate models using the six SRES "marker" scenarios suggest future warming of 1. The projected rate of warming under these scenarios would very likely be without precedent during at least the last 10, years IPCC SPM. The most recent warm period comparable to these projections was the mid-Pliocene, around 3 million years ago Stern N.

Global Land-Ocean, mean surface temperature difference from the average for — Courtesy: Wikipedia. The most recent report IPCC projected that during the 21st century the global surface temperature is likely to rise a further1. This was based on the consistency of evidence across a range of observed changes, including increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level Solomon S, b.

Human activities have contributed to a number of the observed changes in climate Hegerl GC, et. This contribution has principally been through the burning of fossil fuels, which has led to an increase in the concentration of GHGs in the atmosphere. This increase in GHG concentrations has caused a radiative forcing of the climate in the direction of warming.

Human-induced forcing of the climate has likely to contributed to a number of observed changes, including sea level rise, changes in climate extremes such as warm and cold days , declines in Arctic sea ice extent, and to glacier retreat Fig. Projected Global Temperature Rise 1. Human-induced warming could potentially lead to some impacts that are abrupt or irreversible. The probability of warming having unforeseen consequences increases with the rate, magnitude, and duration of climate change. Observations show that there have been changes in weather Le Treut H, et.

As climate changes, the probabilities of certain types of weather events are affected. Changes have been observed in the amount, intensity, frequency, and type of precipitation. Widespread increases in heavy precipitation have occurred, even in places where total rain amounts have decreased.


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Projections of future changes in precipitation show overall increases in the global average, but with substantial shifts in where and how precipitation falls. Climate models tend to project increasing precipitation at high latitudes and in the tropics e. Evidence suggests that, since the s, there have been substantial increases in the intensity and duration of tropical storms and hurricanes.

Models project a general tendency for more intense but fewer storms outside the tropics. Since the late 20th century, changes have been observed in the trends of some extreme weather and climate events, e. Human activities have, with varying degrees of confidence, contributed to some of these observed trends. Projections for the 21 st century suggest continuing changes in trends for some extreme events Fig. Solomon et al. Projected changes in extreme events will have predominantly adverse impacts on ecosystems and human society. Scientists are to outline dramatic evidence that global warming threatens the planet in a new and unexpected way — by triggering earthquakes, tsunamis, avalanches and volcanic eruptions.

It is assessed that the Melting glaciers will set off avalanches, floods and mud flows in the Alps and other mountain ranges; torrential rainfall in the UK is likely to cause widespread erosion; while disappearing Greenland and Antarctic ice sheets threaten to let loose underwater landslides, triggering tsunamis that could even strike the seas around Britain. At the same time the disappearance of ice caps will change the pressures acting on the Earth's crust and set off volcanic eruptions across the globe.

Life on Earth faces a warm future — and a fiery one.