what is the global warming?
December 11, 2006 1:00pm CST
now a days i heard about the problem of global warming but i dont know what it is actually means
11 Dec 06
You need to read my post about the weather!!!! Global Warming is happening because the Ozone Layer that is above the Earth is being Eroded!! The Polar Ice Caps are slowly melting.... If they melt to any signicant degree, this will mean that the Worlds Oceans and Sea will obvioulsy expand... The Little Islands will be islands no more!! Sri Lanka for example will be less than half its size! England will also be half its size !!!
23 Dec 06
global warming is the gradual increase in temperature all around the world..and the reasons as scientists put it is that becaus of increased carbon content in the atmosphere the heat retention has increased which is known as the green house effect..which happens due to increased pollution,depletion of ozone layer and so on..
23 Dec 06
Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades. The Earth's average near-surface atmospheric temperature rose 0.6 ± 0.2 °Celsius (1.1 ± 0.4 °Fahrenheit) in the 20th century . The current scientific consensus is that "most of the observed warming over the last 50 years is likely to have been attributable to human activities". The main cause of the human-induced component of warming is the increase in atmospheric greenhouse gases (GHGs), especially carbon dioxide (CO2), due to activities such as burning of fossil fuels, land clearing, and agriculture.Greenhouse gases are gases that contribute to the greenhouse effect. An increase in global temperatures can in turn cause other changes, including a rising sea level and changes in the amount and pattern of precipitation. These changes may increase the frequency and intensity of extreme weather events, such as floods, droughts, heat waves, hurricanes, and tornados. Other consequences include higher or lower agricultural yields, glacial retreat, reduced summer stream flows, species extinctions and increases in the ranges of disease vectors. Warming is expected to affect the number and magnitude of these events; however, it is difficult to connect particular events to global warming. Although most studies focus on the period up to 2100, warming (and sea level rise due to thermal expansion) is expected to continue past then, since CO2 has an estimated atmospheric lifetime of 50 to 200 years. Only a small minority of climate scientists disagree that humanity's actions have played a major role in recent warming. However, the uncertainty is more significant regarding how much climate change should be expected in the future, and there is a hotly contested political and public debate over implementation of policies that deal with predicted consequences, what, if anything, should be done to reduce or reverse future warming, and how to deal with the predicted consequences. if u want still more know then go to the following link http://en.wikipedia.org/wiki/Global_warming
• United States
15 Dec 06
I recently saw a DVD which contains a presentation given by Algore on Global Warming and how serious it is. By the end of it I was so overwhelmed that we are facing a grave danger in the future and we should take measures in our own way to help. I would suggest everybody who reads this to go to www.climatecrisis.com There is a list of things which we,as common people, can do to help. The main issue is the alarming increase of Carbon dioxide in the atmosphere and as a result increase int he temp and hence the melting of major ice caps at the North Pole. If corrective measures aren't taken now then without a doubt a lot many places in the world will be submerged under water..including Manhattan,NY. The DVD was very enlightening and today's youth should watch it to educate themselves. Many of them know very vaguely what "global warming" is. The DVD is called "The Inconvenient Truth".
11 Dec 06
You should see the movie Inconveinent Truths by Al Gore. It explains global warming very well. Global Warming is defined as the progressive gradual rise of the earth's surface temperature thought to be caused by the greenhouse effect and responsible for changes in global climate patterns. An increase in the near surface temperature of the Earth. Global warming has occurred in the distant past as the result of natural influences, but the term is most often used to refer to the warming predicted to occur as a result of increased emissions of greenhouse gases. weather.ncbuy.com/glossary.html
• United States
11 Dec 06
Global warming refers to the increase in average ground temperatures on earth."(www.globalwarming.com) A rise in the amount of “greenhouse gasses” has caused higher temperatures across the planet. Until recent investigation, the green house effect has simply been described as the process by which the atmosphere traps heat keeping the earth at a livable temperature. Although this trapping of heat is essential to our survival, it has begun to escalate to possibly dangerous levels. Scientists have attributed this to the burning of fossil fuels, chemicals, and other pollutants that wind up in our atmosphere. In the last century alone the levels of carbon dioxide in our atmosphere has risen by 30%. The effects of global warming are very serious and extreme changes in climactic weather have become more common then ever. Some areas of the world have already become as much as 5 degrees Fahrenheit warmer. Many scientists and physicians believe global warming may be to blame for the increased infectious diseases, skin cancer and heat related deaths.