Naturally, emissions of exhaust fumes from the earths surface to the atmosphere results to concentration of gases (and especially carbon dioxide) in the atmosphere; this by extension leads to absorption of excess carbon dioxide (adding to the already existing million tones in the atmosphere). These deposited gases stay in the atmosphere for hundreds of years hence causing more absorption of heat energy hence a blanket is formed above the earth’s surface, more absorption of water vapor cause the blanket to be more thick and warm. This whole process leads to increase in overall temperature globally which further leads to climatic change and revolution in natural ecological unit: drought and famine are the results of this since a small irradiance of the sun causes a significant difference in the earth’s climate.
Human activities such as emissions of toxic gases and carbon dioxide are a major cause of Global Warming; all the same, this phenomenon can not entirely be blamed on such human activities. Over the years, the earth has been experiencing major variations in climatic conditions and these have not been influenced by human activities. Over a period of one million years back, the surface of the earth has been undergoing climatic fluctuations: the earth was warm and there was no freezing temperatures both at the North or the South Pole. Much later, like twenty thousand years ago, there were freezing temperatures that in the present day, North America for instance was sheltered in blankets of snow. All these changes happened without the influence of human activity.
Naturally, volcanic eruptions cause the concentration of aerosols and this is a contributory factor to climatic changes and in the long run Global Warming. When volcanic eruptions occur, this result to concentration of dust in the air and this causes the blockage of the beams of the sun and this by extension leads to condensation in the air and in the long run global warming. Another natural cause is the increase in concentration of solar energy: during certain periods, the movement of the sun increases or prolongs the warming of the earth’s surface, this by extension leads to the variations of the sunny spells and hence a change in climatic conditions.
With increased concentration of carbon dioxide in the atmosphere, the oceans also act as storage of the same; all the same through the effects of global warming, the plants in the water that store carbon dioxide are no longer able to do so and this factor still increases the concentration of the gas in the atmosphere. Should there be a lot of carbon dioxide in the air, the oceans and water bodies become acidic and carbon dioxide reacts with water to give carbonic acid (Goudie, A.2000.pp 404-406).
The earth rotates around its own axis and revolves around the sun, at times the rotation of the earth is not perfect and this causes instability to the normal climatic trends. The latitudes in the north or the south are normally affected during such fluctuations by having radiations either longer than usual or shorter than usual, usually; these effects are more intense in the higher latitudes than in the lower latitudes. This wobbling trend causes increase in atmospheric temperature and in turn-over the years-this has been a contributory factor to global warming. The space between the earth and the sun is about five million kilometers; these changes are described by either winter (perihelion) or summer (aphelion). The emissions of the rays of the sun can delay to reach the earth due to the variance in the space between the earth and the sun and because of the variations in emissions on the trajectory of the earth (Leroux.S. 2005. pp 115-120).
Global Warming has been cause by human activities to a great extent: to understand this however, one needs to understand the idea of climatic condition variations. The green house effect: the surface of the earth absorbs the energy from the sun and this as a result makes the surface to be heated, much of this absorbed energy is spread out on the surface of the earth by greenhouse gases. The greenhouse gases are for example: water vapor, carbon dioxide, nitrous oxide and methane and research have proven that the relationship between the heavy presence of carbon dioxide and variations in the climate is directly proportional. The man made sources of Nitrous oxide are nitric acid, fertilizers in farming, emissions of fossil fuel from vehicles, burning of crude materials and nylon and through a result of reactions between the gas itself and the radiant beams of the sun, these reactions lead to the remittances of the gas into the atmosphere.
Research has shown that methane is very good at absorbing solar energy from the sun just like carbon dioxide: this gas has increased in abundance to the tune of one hundred and forty five percent in a span of one-hundred years, a trend that would be considered worrying. Methane comes from remnant fuel (mining of coal and oil), bacterial reactions and from rice paddies. In rice fields, reactions between bacteria and the macrobiotic substances cause decay and hence this leads to emission of gases in the environment. All the greenhouse gases have a percentage share of Water Vapor and this is approximately sixty-six in percentage. Naturally during the heating process of the earth, there is bound to be accumulation of water vapor in the atmosphere and this in turn increases warming and accumulation of humidity in the air (Weart, R.S .2003.pp 157-157).
In the present age, the earth is heating at a continuous rate but the rates are not uniform in all regions: there are certain regions inn the Northern Hemisphere that are experiencing this effect faster than other areas in the Southern Hemisphere and vice versa. The greenhouse gases have increased in intensity in the recent past (about one-hundred years ago) a factor that has been pegged to increase in the overall populace of human beings and the increase in industries. When the population started experiencing the large numbers of industries sprouting, it followed that the discharge of gases into the atmosphere increased, this in turn led to increase in Global Warming (.Storm.R .2007.pp 114-115).
Cutting down of trees is a major cause of Global warming: over the years and as the population increases in the world over, deforestation has encouraged the concentration of carbon dioxide in the atmosphere. Living plants in general contain the carbon gas, when trees die and decay, carbon dioxide is normally released into the environment. By burning down trees, there are carbon dioxide emissions to the tune of twenty to twenty-five percent. There is a massive loss of forest cover globally and this poses a great threat: both tropical and temperate forests are cut down each year in large numbers and this translates into volumes of carbon dioxide into the air annually, a factor that increases global warming. Normally, the temperature of the earth is regulated by the process of the balance between the energy absorption from the sun and the remittances of the same radiations from the earth’s surface.
There is a massive production of carbon dioxide gas from power industries: this is due to the introduction of fossil fuel –such as coal-as a means of producing energy. Coal and oil emit more carbon when burnt that gas does. Apart from these, exhaust fumes from vehicles and from trucks and in general, vehicles which can go less miles while consuming a lot of fuel emit more gas into the air. Airplanes contribute a big deal to global warming and this is to the tune of three point five percent, this figure although big, is expected to increase in the coming future. Building structures are not an exception because they also are responsible for Global Warming to a tune of twelve percent. Increase in population also leads to increase in the use of motor vehicles, increase in the need for food and that in turn means participation in agricultural activities. Increase in the use of vehicles and other forms of transportation means more burning of fossils fuels a factor that causes emission of toxic gases into the atmosphere hence global warming. Increase in population also cause global warming in the sense that human beings breath out carbon dioxide which still leads to concentration of the gas in the atmosphere (Schneider.S.H. 1990 .pp 321-325).
The effects of global warming are far and wide and put the whole world at a great risk, both for the human life and the environment: for human life, global warming has led to the spread of disease. When the northern hemisphere warning becomes severe, disease carrying insects causes epidemics. Research has shown that due to global warming, certain diseases such as malaria have not been fully done away with. Due to global warning that lead to heating of the water bodies that by extension has led to Hurricanes, catastrophic consequences have been experienced over the years.
Global warming has also led to drought and famine: Africa and Europe are expected to be on the receiving end, this is coupled by lack of water due to decrease of water levels in the existing water bodies. Due to these consequences, it can further lead to outbreak of war and conflicts as aggravated by these conditions. Due to the above consequences, this can lead to dire results on trade and industry conditions, in conditions of drought and famine, spread of disease, inadequate water, epidemics such as hurricanes and war and conflicts, the economies of individual countries and by extension the whole world is bound to suffer. Global warming is also bound to cause the sheets of ice and snow to melt and this will have dire consequences: should the ice sheets melt all at once, then the heights of the water bodies will go up by two hundred and thirty feet, this however can not happen in a single stride.
Should the ice sheets melt also, the fresh waters will dilute the water bodies and this in turn will alter the ocean currents and so the cooling effects will be interfered with, this – on a lighter note- help to decelerate the severity of global warming in certain areas. Variations in the normal temperature will lead to change in the ecosystem and this in turn will affect the animal groups that live in these areas. Melting of the ice and snow will also lead to poor reflection of the radiant beams of the sun; this will mean that the remaining reflector will be the ocean, the ocean only can not reflect the sun rays enough so this means that the earth surface will remain dull, dull colors absorb the sun rays more than brighter colors so more absorption of heat from the earth (Tennesen, M. 2004. pp 9-12).
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