Global warming is expected to increase the intensity of the forces of nature such as tornadoes and hurricanes. It is not determined by individual weather events, such as heat waves or cold snaps or hurricanes, but by the global mean surface temperature. It is the increased intensity of hurricanes in the North Atlantic, increasing the risk of devastating impacts when a storm.
Global warming is leading to more dramatic changes in climate in some areas. Already is affecting the world we know, endangering polar bears, shortening ski seasons and creating more intense storms. Global warming is an enormous risk, is an increase in average surface temperature of the earth.
Global warming is bad news for human life, including changes in income agricultural, melting glaciers and extinction of certain species forever.
Global warming is an increase in average global temperature as result of what is known as the greenhouse effect. Certain gases in the atmosphere behave like glass in a greenhouse, allowing sunlight to heat through the surface of the earth, but to capture heat as it radiates back into space, causing an increase in average surface temperature of the Earth. Since the early 1800, the average global temperature has risen about 0.7 to 1.4 degrees F (0.4 to 0.8 degrees C). Global warming is not determined by weather individual, but by the global mean surface temperature. North America experienced a relatively normal winter in 2006-2007, and parts had a climate too cold this year?
Greenhouse gases are an air pollution problem, and all air pollution problems of the past will have cost much less to fix than expected, while declining faster than expected. This is one reason to hope that artificial greenhouse gases can be controlled reasonably cheaply and without wrenching sacrifices for the global economy. Greenhouse gases are released by activities such as burning fossil fuels, logging and agriculture. Other phenomena such as solar variation and volcanoes have had smaller and probably negative effects of 1950.
Warming global is already underway. The evidence is vast and the urgency of taking action becomes clearer with each new scientific study.
Earth Day In HD
Comments on this entry are closed.