Essay On Greenhouse Effect And Global Warming
Essay on Global Warming and the Greenhouse Effect
1500 Words6 Pages
Global Warming is due to the greenhouse effect. The greenhouse effect is a naturally occurring process that aids in heating the Earth's surface and atmosphere. It results from the fact that certain atmospheric gases, such as carbon dioxide, water vapor, and methane, are able to change the energy balance of the planet by being able to absorb longwave radiation from the Earth's surface. Without the greenhouse effect, life on this planet would probably not exist as the average temperature of the Earth would be a chilly -18 degrees Celsius, rather than the present 15 degrees Celsius.
As energy from the sun passes through the atmosphere a number of things take place. A portion of the energy (26 %…show more content…
The now warmer atmospheric greenhouse gas molecules begin radiating longwave energy in all directions. Over 90 % of this emission of longwave energy is directed back to the Earth's surface where it once again is absorbed by the surface. The heating of the ground by the longwave radiation causes the ground surface to once again radiate repeating the cycle described above, again and again, until no more longwave is available for absorption.
The amount of heat energy added to the atmosphere by the greenhouse effect is controlled by the concentration of greenhouse gases in the Earth's atmosphere. All of the major greenhouse gases have increased in concentration since the beginning of the industrial revolution (about 1700 A.D.). As a result of these higher concentrations, scientists predict that the greenhouse effect will be enhanced and the Earth's climate will become warmer. Predicting the amount of warming is accomplished by computer modeling. Computer models suggest that a doubling of the concentration of the main greenhouse gas, carbon dioxide, may raise the average global temperature between 1 and 3 degrees Celsius. However, the numeric equations of computer models do not accurately simulate the effects of a number of possible negative feedbacks. For example, many of the models cannot properly simulated the negative effects that increased cloud cover would have on
Global Warming and the Greenhouse Effect Essay examples
457 Words2 Pages
Global Warming and the Greenhouse Effect
In the past decade the greenhouse effect has gained much attention with
the media. Because of the pollution in the 1980's and early 90's attention
was brought to the greenhouse effect. In overpopulated areas, the amounts of
methane and carbon dioxide was growing. Some scientists believe the
greenhouse effect is directly related to the earth's warming, others believe
it's a cycle of earth's temperatures.
The greenhouse effect is very important to our climate. The light waves
from the sun penetrate through the atmosphere. The warm air heats up the
land and as it rises it hits the o-zone layer and bounces back into the earth
and continues to heat. In a…show more content…
The earth is heating from the greenhouse effect. Without the o-zone
layer there blocking the heat from leaving the atmosphere, earth would become
very cold and lifeless. If not for the greenhouse effect, the earth would be
33 degrees C colder than it is now. Other proof that the greenhouse effect
does heat is Venus' atmosphere is so thick and in effect its greenhouse
effect is so large that its surface is hot enough to melt lead.
Carbon dioxide, water vapors, and methane are a big contribution in
blocking heat from leaving earth. Some sources of methane can be prevented.
For instance the over-production of cattle, the unnecessary amounts of waste,
and fumes and smog from factories. A lot of carbon dioxide is also
preventative. Forest fires produce much carbon dioxide and stop much
production of oxygen.
Throughout the history of the world there has been many cycles of the
climates. The warming of the earth could, in fact, have nothing to do with
the greenhouse effect and simply be part of the earth's cycle of climates.
In the beginning the earth was hot and pure lava, then it became covered with
glaciers. A huge heat wave came over the land and melted the glaciers.
Since then the temperatures have become rather moderate, the warming that's
happening can simply be part of this cycle
The greenhouse effect has a great impact on the