Global Temperatures
This is an excerpt from the paper...
Global temperatures are determined by the atmospheric greenhouse effect. Briefly, the cycle works as follows. Heat emitted from the sun enters the earth=s atmosphere through the ozone layer. This ozone layer filters out some of the harmful radiation from the sun=s ultraviolet rays while still letting in some of its life giving heat and energy. Then the ozone layer continues to participate in the system by keeping some of that heat trapped close to the earth=s surface, allowing biodiversity and agriculture to thrive. The sun continually provides rays of heat and energy, and the ozone molecules comprising the stratospheric ozone layer are in a constant state of breaking down and rebuilding. These events have been working together to regulate our climate since the origin of the planet. It is a major part of what makes earth so unique. Then in the 1960s scientists discovered a large hole in the ozone layer above the antarctic region. Since that time, both the causes of the ozone depletion and the expected impact on global temperatures based on the existence of the hole have been subject to endless scrutiny, research, and debate. Scientists almost conclusively agree, however, that the hole in the ozone has been caused (at least in part) by the increased occurrence of greenhouse gases in the atmosphere. Unfortunately this can be directly traced to human activities, primarily since the industrial revolution. Humans have irrevocably altered the natura
. . .
y take on a life of their own once free in the atmosphere. CFCs can have life spans of up to 100 years when floating around the ozone. This implies that despite the fact that there have been great strides made in slowing the release of this material into the air, we will still be feeling the consequences of such past activities well into the next century.
Effects of global warming
There are certain direct effects associated with increased global temperatures. The four most significant impacts are changes in sea levels, ice cover, forest cover, and regional climates. Each of these changes have indirect effects which accompany them, some of which are presented below.
Rising temperatures result in rising sea levels. The most frightening aspect of this event becomes clear when one realizes that almost 90 percent of the earth=s population lives in coastal areas. Furthermore, there is an amazing amount of biodiversity in these regions which will be inarguably threatened by this changing landscape.
Changes in the level of ice cover of the planet also have some predictable, detrimental consequences. For starters, it impacts ocean temperatures, changing the complex balance of plant life hosted therein, which may have effec
. . .
Some common words found in the essay are:
II Causes, Introduction Global, Basically Amost, Mother Nature=s, Ozone Layer, Online Available, global warming, ozone layer, greenhouse gases, References Bryner, Kraft Eds, ice cover, Hoyt Greenhouse, global temperatures, Kyoto Conference, greenhouse gas emissions, greenhouse gas, gas emissions, heat energy, levels ice, forest cover, levels ice cover, heat energy ozone, greenhouse gases atmosphere, ice cover forest,
Approximate Word count = 1827
Approximate Pages = 7 (250 words per page)
More Essays on Global Temperatures
|
Customer Service
to Over
32,000 Professionally Written Papers!!!
