The video illustrates a small component of the upcoming , set to come out in 2014, which provides Congress with the most up-to-date information on the state of climate change in the country from more than 240 contributing climate scientists. The last report was published in 2009.
Researchers at NASA's Goddard Space Flight Center teamed with scientists at the National Oceanic and Atmospheric Administration's National Climatic Data Center (NCDC) in Asheville, N.C., to create a new video, which compares two different climate change scenarios: One in which atmospheric carbon dioxide levels increase fromto 550 ppm, and a second in which carbon dioxide levels double to 800 ppm. (Parts per million means that, for example, for every million molecules of air, 400 of them are carbon dioxide.)
These carbon dioxide concentrations are based on high- and low-emissions scenarios proposed by the Intergovernmental Panel on Climate Change, and are based on a variety of factors, including potential world population growth, economic development and global commitment to sustainability. The first scenario would require some kind of mitigation and curtailment of greenhouse gas emissions, while the second would occur if emissions continued to increase.
Both scenarios would result inacross the United States, according to NASA. The conservative scenario of 550 ppm could increase average U.S. temperatures by up to 4.5 degrees Fahrenheit (about 2 degrees Celsius) and the more extreme scenario of 800 ppm could heat the country up by 8 F (about 4 C). []
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