Given this historic blizzard, should this most recent evidence of a global warming trend be taken seriously? Is there conclusive evidence of global warming? Does global climate change have serious consequences when many of us live or travel in climate-controlled structures that are cooled in summer and heated in winter? The general consensus of the scientific community is that the earth's surface is warming.
Research centers in Great Britain and the United States maintain two long-term data sets on global surface temperatures; the most recent data from these centers indicated that 2005 was the warmest year on record. As Al Gore discussed on the film, he mentioned that warming temperatures are already causing significant changes to mountain glaciers around the world, ice sheets in Greenland and the Antarctic, and polar sea ice in the Arctic. From Europe to Africa to Asia to North America, mountain glaciers have receded over the 20th century, and melting is becoming more rapid.
The large-scale melting of ice may accelerate the pace of global warming in what is known as a feedback process. Because ice reflects sunlight back out to space, it has a cooling effect. Water and land, which are darker than ice, absorb and retain more heat. And he also discussed that the global average temperatures strongly suggest that global warming has actually begun to take place. This is not, however, a simple trend to document. Temporary confounding factors can mask an overall trend in average temperatures.
He also mentioned about the ice berg in the Antartic and Artic zones. He said that the reason why it melted so fast in our century is that the stronger heat from the the sun. Mr. Al Gore is only concerned to our mother Earth today. ‘Coz he said that maybe after 50 more years, most of the lands on our planet will be submerged on water. And he also said that the risk of happening this is almost 65% in reality! Indeed, a global convention would not otherwise have been possible.
It is important to remember that an alteration of the global climate system is unlikely to be one of just gradual change, but that dramatic changes and shifts are possible. Also, for any factor, such as increased high-altitude cloudiness, that could lessen the effects of global warming, there is likely to be a factor that could heighten the effects. In the end, it is common sense to do something to avert global warming. This is not a backyard experiment that humankind can walk away from. We are experimenting with the entire planet, and this is where we live.