Can anyone tell me about definition of global warming and the cause of global warming?

Question

can you give me as much information that you can give me Please!

Answer 1

The phrase global warming refers to the documented historical warming of the Earth's surface based upon worldwide temperature records that have been maintained by humans since the 1880s.  The term global warming is often used synonymously with the term climate change, but the two terms have distinct meanings.  Global warming is the combined result of anthropogenic emissions of greenhouse gases and changes in solar irradiance, while climate change refers to changes caused by global warming in weather (temperatures, precipitation, frequency of heat waves, etc.) and other climate system components, such as Arctic sea ice extent.  

your next question

  What causes global warming?  

Carbon dioxide and other air pollution that is collecting in the atmosphere like a thickening blanket, trapping the sun's heat and causing the planet to warm up. Coal-burning power plants are the largest U.S. source of carbon dioxide pollution -- they produce 2.5 billion tons every year. Automobiles, the second largest source, create nearly 1.5 billion tons of CO2 annually.

Here's the good news: technologies exist today to make cars that run cleaner and burn less gas, modernize power plants and generate electricity from nonpolluting sources, and cut our electricity use through energy efficiency. The challenge is to be sure these solutions are put to use.

Answer 2

Sunlight loses energy as it passes through the atmosphere.  The lower energy light (heat) doesn't have enough left to get back out if it reflects off the oceans or an ice cap.  Adding certain gases to the atmosphere thickens it so that more heat is trapped.  Thos gases are the same ones released by factories, power plants, cars, etc.

Answer 3

the global warming is the extensive or enhanced greenhouse effect which keeps the earth's heat enough for living. global warming is the enhanced version, means that excessive heating that melts polar ice caps and cause higher tides.

the cause of global warming is the excessive release of greenhouse gases into the atmosphere. :P

Answer 4

Very easy...  You need to be careful asking these sorts of questions though, because the nuts come out of the woodwork.

Global warming is that natural occurrence after an ice age and as opposed to global cooling as we approach an ice age.  

If you go back to when the Earth was new, those temperature changes ranged by thousands of degrees.  As we go along, our temperature range is less and less expansive.

Answer 5

Science Has Spoken:

Global Warming Is a Myth

by Arthur B. Robinson and Zachary W. Robinson

Copyright 1997 Dow Jones & Co., Inc.

Reprinted with permission of Dow Jones & Co., Inc.

The Wall Street Journal (December 4, 1997)

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Political leaders are gathered in Kyoto, Japan, working away on an international treaty to stop "global warming" by reducing carbon dioxide emissions. The debate over how much to cut emissions has at times been heated--but the entire enterprise is futile or worse. For there is not a shred of persuasive evidence that humans have been responsible for increasing global temperatures. What's more, carbon dioxide emissions have actually been a boon for the environment.

The myth of "global warming" starts with an accurate observation: The amount of carbon dioxide in the atmosphere is rising. It is now about 360 parts per million, vs. 290 at the beginning of the 20th century, Reasonable estimates indicate that it may eventually rise as high as 600 parts per million. This rise probably results from human burning of coal, oil and natural gas, although this is not certain. Earth's oceans and land hold some 50 times as much carbon dioxide as is in the atmosphere, and movement between these reservoirs of carbon dioxide is poorly understood. The observed rise in atmospheric carbon dioxide does correspond with the time of human release and equals about half of the amount released.

Carbon dioxide, water, and a few other substances are "greenhouse gases." For reasons predictable from their physics and chemistry, they tend to admit more solar energy into the atmosphere than they allow to escape. Actually, things are not so simple as this, since these substances interact among themselves and with other aspects of the atmosphere in complex ways that are not well understood. Still, it was reasonable to hypothesize that rising atmospheric carbon dioxide levels might cause atmospheric temperatures to rise. Some people predicted "global warming," which has come to mean extreme greenhouse warming of the atmosphere leading to catastrophic environmental consequences.

Careful Tests

The global-warming hypothesis, however, is no longer tenable. Scientists have been able to test it carefully, and it does not hold up. During the past 50 years, as atmospheric carbon dioxide levels have risen, scientists have made precise measurements of atmospheric temperature. These measurements have definitively shown that major atmospheric greenhouse warming of the atmosphere is not occurring and is unlikely ever to occur.

The temperature of the atmosphere fluctuates over a wide range, the result of solar activity and other influences. During the past 3,000 years, there have been five extended periods when it was distinctly warmer than today. One of the two coldest periods, known as the Little Ice Age, occurred 300 years ago. Atmospheric temperatures have been rising from that low for the past 300 years, but remain below the 3,000-year average.



Why are temperatures rising? The first chart nearby shows temperatures during the past 250 years, relative to the mean temperature for 1951-70. The same chart shows the length of the solar magnetic cycle during the same period. Close correlation between these two parameters--the shorter the solar cycle (and hence the more active the sun), the higher the temperature--demonstrates, as do other studies, that the gradual warming since the Little Ice Age and the large fluctuations during that warming have been caused by changes in solar activity.

The highest temperatures during this period occurred in about 1940. During the past 20 years, atmospheric temperatures have actually tended to go down, as shown in the second chart, based on very reliable satellite data, which have been confirmed by measurements from weather balloons.

Consider what this means for the global-warming hypothesis. This hypothesis predicts that global temperatures will rise significantly, indeed catastrophically, if atmospheric carbon dioxide rises. Most of the increase in atmospheric carbon dioxide has occurred during the past 50 years, and the increase has continued during the past 20 years. Yet there has been no significant increase in atmospheric temperature during those 50 years, and during the 20 years with the highest carbon dioxide levels, temperatures have decreased.

In science, the ultimate test is the process of experiment. If a hypothesis fails the experimental test, it must be discarded. Therefore, the scientific method requires that the global warming hypothesis be rejected.

Why, then, is there continuing scientific interest in "global warming"? There is a field of inquiry in which scientists are using computers to try to predict the weather--even global weather over very long periods. But global weather is so complicated that current data and computer methods are insufficient to make such predictions. Although it is reasonable to hope that these methods will eventually become useful, for now computer climate models are very unreliable. The second chart shows predicted temperatures for the past 20 years, based on the computer models. It's not surprising that they should have turned out wrong--after all the weatherman still has difficulty predicting local weather even for a few days. Long-term global predictions are beyond current capabilities.

So we needn't worry about human use of hydrocarbons warming the Earth. We also needn't worry about environmental calamities, even if the current, natural warming trend continues: After all the Earth has been much warmer during the past 3,000 years without ill effects.

But we should worry about the effects of the hydrocarbon rationing being proposed at Kyoto. Hydrocarbon use has major environmental benefits. A great deal of research has shown that increases in atmospheric carbon dioxide accelerate the growth rates of plants and also permit plants to grow in drier regions. Animal life, which depends upon plants, also increases.

Standing timber in the United States has already increased by 30% since 1950. There are now 60 tons of timber for every American. Tree-ring studies further confirm this spectacular increase in tree growth rates. It has also been found that mature Amazonian rain forests are increasing in biomass at about two tons per acre per year. A composite of 279 research studies predicts that overall plant growth rates will ultimately double as carbon dioxide increases.

Lush Environment

What mankind is doing is moving hydrocarbons from below ground and turning them into living things. We are living in an increasingly lush environment of plants and animals as a result of the carbon dioxide increase. Our children will enjoy an Earth with twice as much plant and animal life as that with which we now are blessed. This is a wonderful and unexpected gift from the industrial revolution.

Hydrocarbons are needed to feed and lift from poverty vast numbers of people across the globe. This can eventually allow all human beings to live long, prosperous, healthy, productive lives. No other single technological factor is more important to the increase in the quality, length and quantity of human life than the continued, expanded and unrationed use of the Earth's hydrocarbons, of which we have proven reserves to last more than 1,000 years. Global warming is a myth. The reality is that global poverty and death would be the result of Kyoto's rationing of hydrocarbons.

Arthur Robinson and Zachary Robinson are chemists at the Oregon Institute of Science and Medicine.

http://www.junkscience.com/news/robinson...

Answer 6

To put it simply global warming is the process in which the Earth warms up as opposed to global cooling where it cools down.

It is a natural occurrence which is unfortunately being speed up and worsened by humans.

The Cause: When the Suns rays hit Earth many are reflected back into space or absorbed into the ocean where it will later evaporate. Unfortunately, CO2, the gas that is emitted from most technology floats up into our atmosphere and stays there for a long period of time. When the ocean heats up it creates water vapor that tries to escape into the atmosphere but the CO2 up there doesn't allow it to, therefore it comes back down warming up even more water that'll try to do the same thing back and forth. Its like a ping pong. Water vapor goes up, CO2 shoots it back down, Ocean shoots more up, etc.

The Result: The Earth warms up by a few degrees which puts many living organisms in danger and possibly extinction.

Answer 7

Look at the green house gases. The CO2 is not there because the plants have done a great job.

   Where is all this methane ,it is not there either. Methane is very light so it will go very high ,but it is not there . Methane is explosive so the first airplane to fly through it would cause a great explosion.

   If the gases that is supposed to cause GW are not there then how do U get GW.

Answer 8

Well there is a great deal of hot air comming from the democrats and socialists.  Actually there is no longer a distinction between democrats and socialists.  If you are in a government school you are being taught with a left wing bias.  It may surprise you to learn that Al Gore lives in a twenty room, eight bath mansion in Nashville, Tennesse.  He also has two other homes.  Those global warming movie stars like Brad Pitt and his wife are not living in a trailer either.