Life is important to understand the importance of global warming is not just our land, but every day too. It is also important to understand the effects of global warming that our children and grandchildren will experience in coming years if things continue as they are today.
First, is important to understand that "global warming" is also known as "the greenhouse effect." Instead of a coat of plastic or glass, the earth around a series of gases of the atmosphere composed mainly of nitrogen and oxygen molecules. The From the Earth is about 60 degrees higher hot than it would if there were these gases in the atmosphere that surrounds it. They keep the earth warm and protected from excessive UV (Ultra Violet) rays of the sun. Once hot, their molecules then radiate a portion of that amount of energy to Earth, creating more warming on the surface of our planet. This radiation which causes atmospheric gases to return to earth that scientists call the "greenhouse effect".
While discussions in the past five years about the greenhouse effect has centered on interpreting temperature numbers generated at weather stations around the world. The data from these thermometers are averaged and plotted to try to determine exactly the speed of the Earth has warmed since the operations began. Now there is no doubt the world heated. The thermometers show that the world is warmer now than at any time since measurements began. The year 1990 was the warmest year in the last century. Set in 1991, the years 1983, 1987, 1988 and 1989, were measured at 6 warmest years in the last hundred years. 1991 was the second year the warmest of the last century, perhaps due to the eruption of Mt. Pinatubo during the year. Ash from the volcano in the blocks of the upper atmosphere a little sun to the earth, and must generate a two or three years the cooling effect. After that time, most of the ash particles have been set back to land, and most scientists expect to see global warming trend continues.
Scientists believe we can with "Confidence 99% of the conclusion that current temperatures represent a real warming trend rather than a random fluctuation of the period of 30 years. "The Most scientists agree that global temperature has risen 0.5 degrees Celsius since 1900, and will continue to increase at an increasing rate. The environment is responding to this warming. For example, a study of mountain plants in the Alps (Europe), shows that some cold-loving plants are starting to move at altitudes higher and cooler. It is a response to rising temperatures.
The overall effects of the greenhouse effect can not be directly predicted simply because we have the sufficient knowledge on the subject. However, we were able to establish direct links between some natural phenomena supports the idea that something is changing.
Global warming has a great effect on crops and weather conditions worldwide. The northern hemisphere contains more land in the area of the southern hemisphere, and Conversely, a smaller percentage of the world's oceans. As the oceans absorb more heat than land areas, it is not surprising that most Climate models predict faster heating in the northern hemisphere than the global average. Furthermore, the models predict temperature increases more rapidly at higher latitudes. If global warming trends continue, high temperatures in the United States can reduce agricultural productivity in the United States.
The northern regions of the continent, is expected to drier soils in summer in part because the snow is melting earlier in spring and warmer summers, without clouds, causing the complete evaporation of soil moisture. Also, if the inner regions of the northern hemisphere should receive less moisture, the level of lakes and rivers bottom. Some reports predict the level of the Great Lakes will drop between 2 and 8 feet. River flows in western U.S. can be very vulnerable to higher temperatures expected as a result of the greenhouse effect.
Is there evidence or convincing evidence that CO2 is causing the current warming?
I am not a skeptic. However, I am interested in what he has to say about what I'm deprogramming of a global warming skeptic in my school and evidence of need!
In my opinion, the strongest piece of evidence for AGW is the cooling of the upper atmosphere. No doubt the planet is warming – let's hope the rate does not question. So something must have caused global warming. One result of the enhanced greenhouse effect is basically that the more heat is trapped in the lower atmosphere, causing upper atmosphere to cool. If global warming because the sun, we hope that all layers of the atmosphere. What we see is that the upper atmosphere is cold as predicted AGW. http://www.realclimate.org/index.php/archives/2006/11/the-sky-is-falling/ The two main natural causes of climate change are changes in production the Sun and the Earth's orbital cycles around the sun. However, satellites have followed the sun for 30 years and during this period, not increased, on average. And we're in a cooling of the Earth's orbital cycles. Both natural factors simply can not explain current warming. Moreover, the CO2 in the atmosphere has increased 37% during the past 150 years. Since the emissions of greenhouse gases, CO2 hope to make the planet warms, if the amount in the atmosphere goes increase. For further information, see the link below.
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