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Global Warming - Essay Example

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Introduction Today, after the incredible space missions and amazing discoveries in our Universe, the mankind pays regard again to its common home - the planet Earth. The Earth problems, their understanding and interpretation should take an important place among the fundamentals of modern scientific knowledge, as their solution largely predetermines the future of our civilization and general world outlook that define prospects for further development of society…
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Global Warming
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Download file to see previous pages This is a difficult dilemma, because the effects of climate change will manifest themselves in different ways in different regions, from pole to pole. The political reasoning of the problem solution suggests that all countries need to make coordinated and deliberate actions based on special international conventions on climate change. Scientists and international scientific community are now under a tremendous pressure, as a correct identification of climate change trends and its main consequences in the future will save humanity from immense ills and, vice versa, adoption of expensive measures without sufficient scientific grounds will lead to huge economic losses. Global Warming Its easiest definition runs that global warming is a gradual increase in average temperature of the Earth’s atmosphere and oceans in the 20th and 21st centuries. Scientific judgments, expressed by the UN Intergovernmental Panel on Climate Change, directly supported by National Academies of Sciences of the Big Eight, say that the average temperature on Earth has risen by 0.7 ° C since the Industrial Revolution (the second half of the 18th century) and a considerable proportion of observed warming over the past 50 years was caused by human activities, primarily by gas emission (carbon dioxide (CO2) and methane (CH4)), that cause the greenhouse effect (Mank 1). The increase in average global temperature led to a decrease in continental glaciers. In addition, we should expect a decrease of the permafrost zone, which presently occupies a significant part of the planet, as well as anticipate changes in the methods of management, farming, construction, etc. in the zone itself. Measurements and calculations showed that for the last 100 years mountain glaciers have decreased by approximately 2.000 cubical kilometers; the annual decline averaged 0.06% of the total mass of Alpine ice. Signs of glaciers’ degradation are observed in all regions of the Arctic, where global warming manifests itself to the maximum extent. Climate warming leads to sea levels rise. Over the past 20 years the rate of increase has doubled and reached 2.5 cm/yr. This rise promises significant environmental consequences. Saltwater intrusion in deltas of the major rivers will destroy protected habitat for wild animals and birds, spawning grounds for fish. Sea level rise will increase a probability of devastating storms. The issue of dams’ building needs to be thought through today. About 70% of the seaside is currently being destroyed as a result of natural lift of water and increasing human activities. This process will be further exacerbated by global warming. So, according to the UN Environment Program data, in the Nile Delta, for example, one-fifth of the arable land of Egypt can be flooded by rising water, which will affect about 10 million people (Mank 3). Scientists state that in addition to sea-level rise, rise of global temperature will lead to changes in the quantity and distribution of precipitation. As a result, there is a strong possibility of natural disasters such as floods, droughts, hurricanes, etc.; harvests will fall in the affected areas and will increase in other zones (due to increasing concentration of carbon dioxide). Climate warming may cause a geographic ...Download file to see next pagesRead More
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