Essay on Global Warming

Free Global Warming papers

Global warming
The Greenhouse Effect The greenhouse effect is an increase in the atmospheric temperature caused by increasing amounts of greenhouse gases. These gases act as a heat blanket insulating the Earth's surface absorbing and trapping heat radiation which normally escapes from the earth. They includ

global warming
Global Warming Global Warming, aside from pollution is one of scientists biggest concerns. Global Warming is caused by the Greenhouse effect. There are 4 steps in the Greenhouse effect. 1-Sunlight radiates from the sun, through space, to EarthÆs atmosphere. 2- The sunlight enters the

Global Warming

Global Warming, aside from pollution is one of scientists biggest concerns. Global

Warming is caused by the Greenhouse effect. There are 4 steps in the Greenhouse

effect. 1-Sunlight radiates from the sun, through space, to earth’s atmosphere. 2-

the sunlight enters the atmosphere and hits Earth. Some of it turns into heat energy

in the form of infrared light. The heat gets absorbed by surrounding air and land,

which in turn makes it warm. 3- Infrared rays, which are remitted into the

atmosphere, are trapped by greenhouse gases. 4- the gas then absorbs the light and

is remitted back to the earth’s surface and warms it even more. Some of the

naturally occurring greenhouse gases are Methane and carbon dioxide. This is the

way the Earth keeps itself warm enough for humans to live on it. The only problem

with this is that humans enhance the process even more. Over the past 200 years

the emissions of greenhouse gases have been increasing due to the increase in

technology that humans have developed (example, factories). These human-

induced gases include carbon dioxide, methane, nitrous oxide, and ozone depleting

substances such as CFCs, also known as Chlorofluorocarbons, hydrofluorocarbons,

and perfluorocarbons. These gases are generated a number of human activities

such as fossil fuel combustion, waste disposal in landfills, the use of a refrigerator,

numerous agricultural and industrial activities, and the cutting down of numerous

forests. These human practices have already changed the chemical make up of the

atmosphere. Between the pre-industrial times and today, we have seen the

concentration of carbon dioxide rise 30% in some regions, in particular the

northern hemisphere, human practices have increased concentrations of aerosols in

atmosphere, which is a traditional form of air pollution), which tends to cool the

atmosphere. With all these gases in the air, it is starting to change the earth’s

climate. The temperature of the earth’s surface is as warm; if not warmer than it

has been in any other century since at least 1400 AD. The temperature over the

past century has risen one degree Fahrenheit over the last century. These last few

decades have been the warmest this century. The sea level has risen 4 to 10 inches,

and mountain glaciers world-wide have begun to retreat. It is important to

recognize that with the recent warming and the other climatic changes that...